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AQuery/AQuery2

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data-hydro-click="{&quot;event_type&quot;:&quot;authentication.click&quot;,&quot;payload&quot;:{&quot;location_in_page&quot;:&quot;site header&quot;,&quot;repository_id&quot;:null,&quot;auth_type&quot;:&quot;SIGN_UP&quot;,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="64410d612a128dcd6541135c43bc7d450ba49f38a7eaed7a20241d001da62ade"
>
Sign&nbsp;up
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</div>
<div class="flex-1 flex-order-2 text-right">
<button aria-label="Toggle navigation" aria-expanded="false" type="button" data-view-component="true" class="js-details-target btn-link d-lg-none color-fg-inherit p-1"> <div class="HeaderMenu-toggle-bar rounded my-1"></div>
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<div class="HeaderMenu--logged-out p-responsive height-fit position-lg-relative d-lg-flex flex-column flex-auto pt-7 pb-4 top-0">
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<ul class="d-lg-flex list-style-none">
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<svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1">
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<div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 py-2 py-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 d-lg-flex dropdown-menu-wide">
<ul class="list-style-none f5 px-lg-4 border-lg-right mb-4 mb-lg-0 pr-lg-7">
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<div class="color-fg-default h4">Actions</div>
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<path fill-rule="evenodd" d="M12.876.64a1.75 1.75 0 00-1.75 0l-8.25 4.762a1.75 1.75 0 00-.875 1.515v9.525c0 .625.334 1.203.875 1.515l8.25 4.763a1.75 1.75 0 001.75 0l8.25-4.762a1.75 1.75 0 00.875-1.516V6.917a1.75 1.75 0 00-.875-1.515L12.876.639zm-1 1.298a.25.25 0 01.25 0l7.625 4.402-7.75 4.474-7.75-4.474 7.625-4.402zM3.501 7.64v8.803c0 .09.048.172.125.216l7.625 4.402v-8.947L3.501 7.64zm9.25 13.421l7.625-4.402a.25.25 0 00.125-.216V7.639l-7.75 4.474v8.947z"></path>
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Host and manage packages
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<div class="color-fg-default h4">Security</div>
Find and fix vulnerabilities
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<a class="HeaderMenu-dropdown-link lh-condensed d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center pb-lg-3" data-analytics-event="{&quot;category&quot;:&quot;Header dropdown (logged out), Product&quot;,&quot;action&quot;:&quot;click to go to Codespaces&quot;,&quot;label&quot;:&quot;ref_page:/sunyinqi0508/AQuery2;ref_cta:Codespaces;&quot;}" href="/features/codespaces">
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<path fill-rule="evenodd" d="M3.5 3.75C3.5 2.784 4.284 2 5.25 2h13.5c.966 0 1.75.784 1.75 1.75v7.5A1.75 1.75 0 0118.75 13H5.25a1.75 1.75 0 01-1.75-1.75v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h13.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25H5.25zM1.5 15.75c0-.966.784-1.75 1.75-1.75h17.5c.966 0 1.75.784 1.75 1.75v4a1.75 1.75 0 01-1.75 1.75H3.25a1.75 1.75 0 01-1.75-1.75v-4zm1.75-.25a.25.25 0 00-.25.25v4c0 .138.112.25.25.25h17.5a.25.25 0 00.25-.25v-4a.25.25 0 00-.25-.25H3.25z"></path><path fill-rule="evenodd" d="M10 17.75a.75.75 0 01.75-.75h6.5a.75.75 0 010 1.5h-6.5a.75.75 0 01-.75-.75zm-4 0a.75.75 0 01.75-.75h.5a.75.75 0 010 1.5h-.5a.75.75 0 01-.75-.75z"></path>
</svg>
<div>
<div class="color-fg-default h4">Codespaces</div>
Instant dev environments
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<li>
<a class="HeaderMenu-dropdown-link lh-condensed d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center pb-lg-3" data-analytics-event="{&quot;category&quot;:&quot;Header dropdown (logged out), Product&quot;,&quot;action&quot;:&quot;click to go to Copilot&quot;,&quot;label&quot;:&quot;ref_page:/sunyinqi0508/AQuery2;ref_cta:Copilot;&quot;}" href="/features/copilot">
<svg aria-hidden="true" height="24" viewBox="0 0 24 24" version="1.1" width="24" data-view-component="true" class="octicon octicon-copilot color-fg-subtle mr-3">
<path d="M9.75 14a.75.75 0 01.75.75v2.5a.75.75 0 01-1.5 0v-2.5a.75.75 0 01.75-.75zm4.5 0a.75.75 0 01.75.75v2.5a.75.75 0 01-1.5 0v-2.5a.75.75 0 01.75-.75z"></path><path fill-rule="evenodd" d="M12 2c-2.214 0-4.248.657-5.747 1.756a7.43 7.43 0 00-.397.312c-.584.235-1.077.546-1.474.952-.85.87-1.132 2.037-1.132 3.368 0 .368.014.733.052 1.086l-.633 1.478-.043.022A4.75 4.75 0 000 15.222v1.028c0 .529.31.987.564 1.293.28.336.637.653.967.918a13.262 13.262 0 001.299.911l.024.015.006.004.04.025.144.087c.124.073.304.177.535.3.46.245 1.122.57 1.942.894C7.155 21.344 9.439 22 12 22s4.845-.656 6.48-1.303c.819-.324 1.481-.65 1.941-.895a13.797 13.797 0 00.68-.386l.039-.025.006-.004.024-.015a8.829 8.829 0 00.387-.248c.245-.164.577-.396.912-.663.33-.265.686-.582.966-.918.256-.306.565-.764.565-1.293v-1.028a4.75 4.75 0 00-2.626-4.248l-.043-.022-.633-1.478c.038-.353.052-.718.052-1.086 0-1.331-.282-2.499-1.132-3.368-.397-.406-.89-.717-1.474-.952a7.386 7.386 0 00-.397-.312C16.248 2.657 14.214 2 12 2zm-8 9.654l.038-.09c.046.06.094.12.145.177.793.9 2.057 1.259 3.782 1.259 1.59 0 2.739-.544 3.508-1.492.131-.161.249-.331.355-.508a32.948 32.948 0 00.344 0c.106.177.224.347.355.508.77.948 1.918 1.492 3.508 1.492 1.725 0 2.989-.359 3.782-1.259.05-.057.099-.116.145-.177l.038.09v6.669a17.618 17.618 0 01-2.073.98C16.405 19.906 14.314 20.5 12 20.5c-2.314 0-4.405-.594-5.927-1.197A17.62 17.62 0 014 18.323v-6.67zm6.309-1.092a2.35 2.35 0 01-.38.374c-.437.341-1.054.564-1.964.564-1.573 0-2.292-.337-2.657-.75-.192-.218-.331-.506-.423-.89-.091-.385-.135-.867-.135-1.472 0-1.14.243-1.847.705-2.32.477-.487 1.319-.861 2.824-1.024 1.487-.16 2.192.138 2.533.529l.008.01c.264.308.429.806.43 1.568v.031a7.203 7.203 0 01-.09 1.079c-.143.967-.406 1.754-.851 2.301zm2.504-2.497a7.174 7.174 0 01-.063-.894v-.02c.001-.77.17-1.27.438-1.578.341-.39 1.046-.69 2.533-.529 1.506.163 2.347.537 2.824 1.025.462.472.705 1.179.705 2.319 0 1.21-.174 1.926-.558 2.361-.365.414-1.084.751-2.657.751-1.21 0-1.902-.393-2.344-.938-.475-.584-.742-1.44-.878-2.497z"></path>
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<div class="color-fg-default h4">Copilot</div>
Write better code with AI
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<div>
<div class="color-fg-default h4">Code review</div>
Manage code changes
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<div class="color-fg-default h4">Issues</div>
Plan and track work
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<div>
<div class="color-fg-default h4">Discussions</div>
Collaborate outside of code
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</ul>
<ul class="list-style-none f5 px-lg-4">
<li class="h4 color-fg-default my-1">Explore</li>
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<button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-3 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false">
Solutions
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Enterprise
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Teams
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Compare all
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<li class="h4 color-fg-default my-1">By Solution</li>
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CI/CD &amp; Automation
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DevOps
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DevSecOps
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Customer Stories
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Resources
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Open Source
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GitHub community articles
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Topics
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Trending
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Collections
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class="HeaderMenu-link HeaderMenu-link--sign-in flex-shrink-0 no-underline d-block d-lg-inline-block border border-lg-0 rounded rounded-lg-0 p-2 p-lg-0"
data-hydro-click="{&quot;event_type&quot;:&quot;authentication.click&quot;,&quot;payload&quot;:{&quot;location_in_page&quot;:&quot;site header menu&quot;,&quot;repository_id&quot;:null,&quot;auth_type&quot;:&quot;SIGN_UP&quot;,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="e4b5fe731a6690114cd1e057638b5e0325e032e42f7ee46497d02253ca555a8f"
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class="HeaderMenu-link HeaderMenu-link--sign-up flex-shrink-0 d-none d-lg-inline-block no-underline border color-border-default rounded px-2 py-1"
data-hydro-click="{&quot;event_type&quot;:&quot;authentication.click&quot;,&quot;payload&quot;:{&quot;location_in_page&quot;:&quot;site header menu&quot;,&quot;repository_id&quot;:null,&quot;auth_type&quot;:&quot;SIGN_UP&quot;,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="e4b5fe731a6690114cd1e057638b5e0325e032e42f7ee46497d02253ca555a8f"
data-analytics-event="{&quot;category&quot;:&quot;Sign up&quot;,&quot;action&quot;:&quot;click to sign up for account&quot;,&quot;label&quot;:&quot;ref_page:/&lt;user-name&gt;/&lt;repo-name&gt;;ref_cta:Sign up;ref_loc:header logged out&quot;}"
>
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</svg>
</button>
<div>{{ message }}</div>
</div>
</div>
</template>
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<include-fragment class="js-notification-shelf-include-fragment" data-base-src="https://github.com/notifications/beta/shelf"></include-fragment>
<div
class="application-main "
data-commit-hovercards-enabled
data-discussion-hovercards-enabled
data-issue-and-pr-hovercards-enabled
>
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<a data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/sunyinqi0508/AQuery2">AQuery2</a>
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<a href="/login?return_to=%2Fsunyinqi0508%2FAQuery2" rel="nofollow" data-hydro-click="{&quot;event_type&quot;:&quot;authentication.click&quot;,&quot;payload&quot;:{&quot;location_in_page&quot;:&quot;notification subscription menu watch&quot;,&quot;repository_id&quot;:null,&quot;auth_type&quot;:&quot;LOG_IN&quot;,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="6b93c061a8dbae855802d50c9a09eec41713f9e25811c36a877db94a473668db" aria-label="You must be signed in to change notification settings" data-view-component="true" class="tooltipped tooltipped-s btn-sm btn"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-bell mr-2">
<path d="M8 16a2 2 0 001.985-1.75c.017-.137-.097-.25-.235-.25h-3.5c-.138 0-.252.113-.235.25A2 2 0 008 16z"></path><path fill-rule="evenodd" d="M8 1.5A3.5 3.5 0 004.5 5v2.947c0 .346-.102.683-.294.97l-1.703 2.556a.018.018 0 00-.003.01l.001.006c0 .002.002.004.004.006a.017.017 0 00.006.004l.007.001h10.964l.007-.001a.016.016 0 00.006-.004.016.016 0 00.004-.006l.001-.007a.017.017 0 00-.003-.01l-1.703-2.554a1.75 1.75 0 01-.294-.97V5A3.5 3.5 0 008 1.5zM3 5a5 5 0 0110 0v2.947c0 .05.015.098.042.139l1.703 2.555A1.518 1.518 0 0113.482 13H2.518a1.518 1.518 0 01-1.263-2.36l1.703-2.554A.25.25 0 003 7.947V5z"></path>
</svg>Notifications
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</li>
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<a href="/login?return_to=%2Fsunyinqi0508%2FAQuery2" rel="nofollow" data-hydro-click="{&quot;event_type&quot;:&quot;authentication.click&quot;,&quot;payload&quot;:{&quot;location_in_page&quot;:&quot;repo details fork button&quot;,&quot;repository_id&quot;:484854813,&quot;auth_type&quot;:&quot;LOG_IN&quot;,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="005c8fbe5d7ccdbd3a483f7785097bf350282f2708537c0aaeaa5ea5c4436f10" aria-label="You must be signed in to fork a repository" data-view-component="true" class="tooltipped tooltipped-s btn-sm btn"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-repo-forked mr-2">
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</svg>Fork
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</a>
</li>
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<a href="/login?return_to=%2Fsunyinqi0508%2FAQuery2" rel="nofollow" data-hydro-click="{&quot;event_type&quot;:&quot;authentication.click&quot;,&quot;payload&quot;:{&quot;location_in_page&quot;:&quot;star button&quot;,&quot;repository_id&quot;:484854813,&quot;auth_type&quot;:&quot;LOG_IN&quot;,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="e6982b84b8074e03ed97e59b303377fc6ba835d696ec0331d01e68ce634bc35e" aria-label="You must be signed in to star a repository" data-view-component="true" class="tooltipped tooltipped-s btn-sm btn BtnGroup-item"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-star v-align-text-bottom d-inline-block mr-2">
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</svg><span data-view-component="true" class="d-inline">
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<p class="f4 mb-3">
An in-memory column-store time-series database that uses query compilation
</p>
<h3 class="sr-only">License</h3>
<div class="mb-2">
<a href="/sunyinqi0508/AQuery2/blob/master/LICENSE"
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MPL-2.0 license
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<details
class="js-branch-select-menu details-reset details-overlay mr-0 mb-0 "
id="branch-select-menu"
data-hydro-click-payload="{&quot;event_type&quot;:&quot;repository.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;REFS_SELECTOR_MENU&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="b9402b3760e747b5c7aa5449205c1a1d9460d06b39ab74907e91932d3b558dcc">
<summary class="btn css-truncate"
data-hotkey="w"
title="Switch branches or tags">
<svg text="gray" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-git-branch">
<path fill-rule="evenodd" d="M11.75 2.5a.75.75 0 100 1.5.75.75 0 000-1.5zm-2.25.75a2.25 2.25 0 113 2.122V6A2.5 2.5 0 0110 8.5H6a1 1 0 00-1 1v1.128a2.251 2.251 0 11-1.5 0V5.372a2.25 2.25 0 111.5 0v1.836A2.492 2.492 0 016 7h4a1 1 0 001-1v-.628A2.25 2.25 0 019.5 3.25zM4.25 12a.75.75 0 100 1.5.75.75 0 000-1.5zM3.5 3.25a.75.75 0 111.5 0 .75.75 0 01-1.5 0z"></path>
</svg>
<span class="css-truncate-target" data-menu-button>master</span>
<span class="dropdown-caret"></span>
</summary>
<div class="SelectMenu">
<div class="SelectMenu-modal">
<header class="SelectMenu-header">
<span class="SelectMenu-title">Switch branches/tags</span>
<button class="SelectMenu-closeButton" type="button" data-toggle-for="branch-select-menu"><svg aria-label="Close menu" aria-hidden="false" role="img" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-x">
<path fill-rule="evenodd" d="M3.72 3.72a.75.75 0 011.06 0L8 6.94l3.22-3.22a.75.75 0 111.06 1.06L9.06 8l3.22 3.22a.75.75 0 11-1.06 1.06L8 9.06l-3.22 3.22a.75.75 0 01-1.06-1.06L6.94 8 3.72 4.78a.75.75 0 010-1.06z"></path>
</svg></button>
</header>
<input-demux data-action="tab-container-change:input-demux#storeInput tab-container-changed:input-demux#updateInput">
<tab-container class="d-flex flex-column js-branches-tags-tabs" style="min-height: 0;">
<div class="SelectMenu-filter">
<input data-target="input-demux.source"
id="context-commitish-filter-field"
class="SelectMenu-input form-control"
aria-owns="ref-list-branches"
data-controls-ref-menu-id="ref-list-branches"
autofocus
autocomplete="off"
aria-label="Filter branches/tags"
placeholder="Filter branches/tags"
type="text"
>
</div>
<div class="SelectMenu-tabs" role="tablist" data-target="input-demux.control" >
<button class="SelectMenu-tab" type="button" role="tab" aria-selected="true">Branches</button>
<button class="SelectMenu-tab" type="button" role="tab">Tags</button>
</div>
<div role="tabpanel" id="ref-list-branches" data-filter-placeholder="Filter branches/tags" tabindex="" class="d-flex flex-column flex-auto overflow-auto">
<ref-selector
type="branch"
data-targets="input-demux.sinks"
data-action="
input-entered:ref-selector#inputEntered
tab-selected:ref-selector#tabSelected
focus-list:ref-selector#focusFirstListMember
"
query-endpoint="/sunyinqi0508/AQuery2/refs"
cache-key="v0:1650747537.7822988"
current-committish="bWFzdGVy"
default-branch="bWFzdGVy"
name-with-owner="c3VueWlucWkwNTA4L0FRdWVyeTI="
prefetch-on-mouseover
>
<template data-target="ref-selector.fetchFailedTemplate">
<div class="SelectMenu-message" data-index="{{ index }}">Could not load branches</div>
</template>
<template data-target="ref-selector.noMatchTemplate">
<div class="SelectMenu-message">Nothing to show</div>
</template>
<div data-target="ref-selector.listContainer" role="menu" class="SelectMenu-list " data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame">
<div class="SelectMenu-loading pt-3 pb-0 overflow-hidden" aria-label="Menu is loading">
<svg style="box-sizing: content-box; color: var(--color-icon-primary);" width="32" height="32" viewBox="0 0 16 16" fill="none" data-view-component="true" class="anim-rotate">
<circle cx="8" cy="8" r="7" stroke="currentColor" stroke-opacity="0.25" stroke-width="2" vector-effect="non-scaling-stroke" />
<path d="M15 8a7.002 7.002 0 00-7-7" stroke="currentColor" stroke-width="2" stroke-linecap="round" vector-effect="non-scaling-stroke" />
</svg>
</div>
</div>
<template data-target="ref-selector.itemTemplate">
<a href="https://github.com/sunyinqi0508/AQuery2/tree/{{ urlEncodedRefName }}" class="SelectMenu-item" role="menuitemradio" rel="nofollow" aria-checked="{{ isCurrent }}" data-index="{{ index }}">
<svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check SelectMenu-icon SelectMenu-icon--check">
<path fill-rule="evenodd" d="M13.78 4.22a.75.75 0 010 1.06l-7.25 7.25a.75.75 0 01-1.06 0L2.22 9.28a.75.75 0 011.06-1.06L6 10.94l6.72-6.72a.75.75 0 011.06 0z"></path>
</svg>
<span class="flex-1 css-truncate css-truncate-overflow {{ isFilteringClass }}">{{ refName }}</span>
<span hidden="{{ isNotDefault }}" class="Label Label--secondary flex-self-start">default</span>
</a>
</template>
<footer class="SelectMenu-footer"><a href="/sunyinqi0508/AQuery2/branches">View all branches</a></footer>
</ref-selector>
</div>
<div role="tabpanel" id="tags-menu" data-filter-placeholder="Find a tag" tabindex="" hidden class="d-flex flex-column flex-auto overflow-auto">
<ref-selector
type="tag"
data-action="
input-entered:ref-selector#inputEntered
tab-selected:ref-selector#tabSelected
focus-list:ref-selector#focusFirstListMember
"
data-targets="input-demux.sinks"
query-endpoint="/sunyinqi0508/AQuery2/refs"
cache-key="v0:1650747537.7822988"
current-committish="bWFzdGVy"
default-branch="bWFzdGVy"
name-with-owner="c3VueWlucWkwNTA4L0FRdWVyeTI="
>
<template data-target="ref-selector.fetchFailedTemplate">
<div class="SelectMenu-message" data-index="{{ index }}">Could not load tags</div>
</template>
<template data-target="ref-selector.noMatchTemplate">
<div class="SelectMenu-message" data-index="{{ index }}">Nothing to show</div>
</template>
<template data-target="ref-selector.itemTemplate">
<a href="https://github.com/sunyinqi0508/AQuery2/tree/{{ urlEncodedRefName }}" class="SelectMenu-item" role="menuitemradio" rel="nofollow" aria-checked="{{ isCurrent }}" data-index="{{ index }}">
<svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check SelectMenu-icon SelectMenu-icon--check">
<path fill-rule="evenodd" d="M13.78 4.22a.75.75 0 010 1.06l-7.25 7.25a.75.75 0 01-1.06 0L2.22 9.28a.75.75 0 011.06-1.06L6 10.94l6.72-6.72a.75.75 0 011.06 0z"></path>
</svg>
<span class="flex-1 css-truncate css-truncate-overflow {{ isFilteringClass }}">{{ refName }}</span>
<span hidden="{{ isNotDefault }}" class="Label Label--secondary flex-self-start">default</span>
</a>
</template>
<div data-target="ref-selector.listContainer" role="menu" class="SelectMenu-list" data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame">
<div class="SelectMenu-loading pt-3 pb-0 overflow-hidden" aria-label="Menu is loading">
<svg style="box-sizing: content-box; color: var(--color-icon-primary);" width="32" height="32" viewBox="0 0 16 16" fill="none" data-view-component="true" class="anim-rotate">
<circle cx="8" cy="8" r="7" stroke="currentColor" stroke-opacity="0.25" stroke-width="2" vector-effect="non-scaling-stroke" />
<path d="M15 8a7.002 7.002 0 00-7-7" stroke="currentColor" stroke-width="2" stroke-linecap="round" vector-effect="non-scaling-stroke" />
</svg>
</div>
</div>
<footer class="SelectMenu-footer"><a href="/sunyinqi0508/AQuery2/tags">View all tags</a></footer>
</ref-selector>
</div>
</tab-container>
</input-demux>
</div>
</div>
</details>
</div>
<div class="flex-self-center flex-self-stretch d-none d-lg-flex flex-items-center lh-condensed-ultra">
<a data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/sunyinqi0508/AQuery2/branches" class="ml-3 Link--primary no-underline">
<svg text="gray" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-git-branch">
<path fill-rule="evenodd" d="M11.75 2.5a.75.75 0 100 1.5.75.75 0 000-1.5zm-2.25.75a2.25 2.25 0 113 2.122V6A2.5 2.5 0 0110 8.5H6a1 1 0 00-1 1v1.128a2.251 2.251 0 11-1.5 0V5.372a2.25 2.25 0 111.5 0v1.836A2.492 2.492 0 016 7h4a1 1 0 001-1v-.628A2.25 2.25 0 019.5 3.25zM4.25 12a.75.75 0 100 1.5.75.75 0 000-1.5zM3.5 3.25a.75.75 0 111.5 0 .75.75 0 01-1.5 0z"></path>
</svg>
<strong>1</strong>
<span class="color-fg-muted">branch</span>
</a>
<a data-pjax="#repo-content-pjax-container" data-turbo-frame="repo-content-turbo-frame" href="/sunyinqi0508/AQuery2/tags" class="ml-3 Link--primary no-underline">
<svg text="gray" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-tag">
<path fill-rule="evenodd" d="M2.5 7.775V2.75a.25.25 0 01.25-.25h5.025a.25.25 0 01.177.073l6.25 6.25a.25.25 0 010 .354l-5.025 5.025a.25.25 0 01-.354 0l-6.25-6.25a.25.25 0 01-.073-.177zm-1.5 0V2.75C1 1.784 1.784 1 2.75 1h5.025c.464 0 .91.184 1.238.513l6.25 6.25a1.75 1.75 0 010 2.474l-5.026 5.026a1.75 1.75 0 01-2.474 0l-6.25-6.25A1.75 1.75 0 011 7.775zM6 5a1 1 0 100 2 1 1 0 000-2z"></path>
</svg>
<strong>0</strong>
<span class="color-fg-muted">tags</span>
</a>
</div>
<div class="flex-auto"></div>
<include-fragment data-test-selector="overview-actions-fragment" src="/sunyinqi0508/AQuery2/overview_actions/master"></include-fragment>
<span class="d-none d-md-flex ml-2">
<get-repo class="">
<details class="position-relative details-overlay details-reset js-codespaces-details-container"
data-action="toggle:get-repo#onDetailsToggle"
>
<summary data-hydro-click="{&quot;event_type&quot;:&quot;repository.click&quot;,&quot;payload&quot;:{&quot;repository_id&quot;:484854813,&quot;target&quot;:&quot;CLONE_OR_DOWNLOAD_BUTTON&quot;,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="4abb215d5afa16329b6cc13dec5434afde0dc26e3e86e59c7252967e35ddc7d5" data-view-component="true" class="btn-primary btn"> Code<span class="dropdown-caret"></span>
</summary> <div class="position-relative">
<div class="dropdown-menu dropdown-menu-sw p-0" style="top:6px;width:378px;">
<div
data-target="get-repo.modal"
>
<ul class="list-style-none">
<li class="Box-row p-3">
<a class="Link--muted float-right tooltipped tooltipped-s" href="https://docs.github.com/articles/which-remote-url-should-i-use" target="_blank" aria-label="Which remote URL should I use?">
<svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-question">
<path fill-rule="evenodd" d="M8 1.5a6.5 6.5 0 100 13 6.5 6.5 0 000-13zM0 8a8 8 0 1116 0A8 8 0 010 8zm9 3a1 1 0 11-2 0 1 1 0 012 0zM6.92 6.085c.081-.16.19-.299.34-.398.145-.097.371-.187.74-.187.28 0 .553.087.738.225A.613.613 0 019 6.25c0 .177-.04.264-.077.318a.956.956 0 01-.277.245c-.076.051-.158.1-.258.161l-.007.004a7.728 7.728 0 00-.313.195 2.416 2.416 0 00-.692.661.75.75 0 001.248.832.956.956 0 01.276-.245 6.3 6.3 0 01.26-.16l.006-.004c.093-.057.204-.123.313-.195.222-.149.487-.355.692-.662.214-.32.329-.702.329-1.15 0-.76-.36-1.348-.863-1.725A2.76 2.76 0 008 4c-.631 0-1.155.16-1.572.438-.413.276-.68.638-.849.977a.75.75 0 101.342.67z"></path>
</svg>
</a>
<div class="text-bold">
<svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-terminal mr-2">
<path fill-rule="evenodd" d="M0 2.75C0 1.784.784 1 1.75 1h12.5c.966 0 1.75.784 1.75 1.75v10.5A1.75 1.75 0 0114.25 15H1.75A1.75 1.75 0 010 13.25V2.75zm1.75-.25a.25.25 0 00-.25.25v10.5c0 .138.112.25.25.25h12.5a.25.25 0 00.25-.25V2.75a.25.25 0 00-.25-.25H1.75zM7.25 8a.75.75 0 01-.22.53l-2.25 2.25a.75.75 0 11-1.06-1.06L5.44 8 3.72 6.28a.75.75 0 111.06-1.06l2.25 2.25c.141.14.22.331.22.53zm1.5 1.5a.75.75 0 000 1.5h3a.75.75 0 000-1.5h-3z"></path>
</svg>
Clone
</div>
<tab-container>
<div class="UnderlineNav my-2 box-shadow-none">
<div class="UnderlineNav-body" role="tablist">
<button name="button" type="button" role="tab" class="UnderlineNav-item" aria-selected="true" data-hydro-click="{&quot;event_type&quot;:&quot;clone_or_download.click&quot;,&quot;payload&quot;:{&quot;feature_clicked&quot;:&quot;USE_HTTPS&quot;,&quot;git_repository_type&quot;:&quot;REPOSITORY&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="2099e8e1c2be1eaf8baaf18fea085ac0d3805897cf0c1180e7d6f2bdec0e706b">
HTTPS
</button> <button name="button" type="button" role="tab" class="UnderlineNav-item" data-hydro-click="{&quot;event_type&quot;:&quot;clone_or_download.click&quot;,&quot;payload&quot;:{&quot;feature_clicked&quot;:&quot;USE_GH_CLI&quot;,&quot;git_repository_type&quot;:&quot;REPOSITORY&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="bde8d1871ff48da7440709d492ba78a363eebf557433c9116e112205b7b272da">
GitHub CLI
</button> </div>
</div>
<div role="tabpanel">
<div class="input-group">
<input type="text" class="form-control input-monospace input-sm color-bg-subtle" data-autoselect value="https://github.com/sunyinqi0508/AQuery2.git" aria-label="https://github.com/sunyinqi0508/AQuery2.git" readonly>
<div class="input-group-button">
<clipboard-copy value="https://github.com/sunyinqi0508/AQuery2.git" aria-label="Copy to clipboard" class="btn btn-sm js-clipboard-copy tooltipped-no-delay ClipboardButton js-clone-url-http" data-copy-feedback="Copied!" data-tooltip-direction="n" data-hydro-click="{&quot;event_type&quot;:&quot;clone_or_download.click&quot;,&quot;payload&quot;:{&quot;feature_clicked&quot;:&quot;COPY_URL&quot;,&quot;git_repository_type&quot;:&quot;REPOSITORY&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="6b6a6cb7881564c7fc3e6c65e205c4fad1e40682df965f3bddd1ab0bf8bce67c"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-copy js-clipboard-copy-icon d-inline-block">
<path fill-rule="evenodd" d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z"></path><path fill-rule="evenodd" d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z"></path>
</svg><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check js-clipboard-check-icon color-fg-success d-inline-block d-sm-none">
<path fill-rule="evenodd" d="M13.78 4.22a.75.75 0 010 1.06l-7.25 7.25a.75.75 0 01-1.06 0L2.22 9.28a.75.75 0 011.06-1.06L6 10.94l6.72-6.72a.75.75 0 011.06 0z"></path>
</svg></clipboard-copy>
</div>
</div>
<p class="mt-2 mb-0 f6 color-fg-muted">
Use Git or checkout with SVN using the web URL.
</p>
</div>
<div role="tabpanel" hidden>
<div class="input-group">
<input type="text" class="form-control input-monospace input-sm color-bg-subtle" data-autoselect value="gh repo clone sunyinqi0508/AQuery2" aria-label="gh repo clone sunyinqi0508/AQuery2" readonly>
<div class="input-group-button">
<clipboard-copy value="gh repo clone sunyinqi0508/AQuery2" aria-label="Copy to clipboard" class="btn btn-sm js-clipboard-copy tooltipped-no-delay ClipboardButton js-clone-url-gh-cli" data-copy-feedback="Copied!" data-tooltip-direction="n" data-hydro-click="{&quot;event_type&quot;:&quot;clone_or_download.click&quot;,&quot;payload&quot;:{&quot;feature_clicked&quot;:&quot;COPY_URL&quot;,&quot;git_repository_type&quot;:&quot;REPOSITORY&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="6b6a6cb7881564c7fc3e6c65e205c4fad1e40682df965f3bddd1ab0bf8bce67c"><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-copy js-clipboard-copy-icon d-inline-block">
<path fill-rule="evenodd" d="M0 6.75C0 5.784.784 5 1.75 5h1.5a.75.75 0 010 1.5h-1.5a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-1.5a.75.75 0 011.5 0v1.5A1.75 1.75 0 019.25 16h-7.5A1.75 1.75 0 010 14.25v-7.5z"></path><path fill-rule="evenodd" d="M5 1.75C5 .784 5.784 0 6.75 0h7.5C15.216 0 16 .784 16 1.75v7.5A1.75 1.75 0 0114.25 11h-7.5A1.75 1.75 0 015 9.25v-7.5zm1.75-.25a.25.25 0 00-.25.25v7.5c0 .138.112.25.25.25h7.5a.25.25 0 00.25-.25v-7.5a.25.25 0 00-.25-.25h-7.5z"></path>
</svg><svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-check js-clipboard-check-icon color-fg-success d-inline-block d-sm-none">
<path fill-rule="evenodd" d="M13.78 4.22a.75.75 0 010 1.06l-7.25 7.25a.75.75 0 01-1.06 0L2.22 9.28a.75.75 0 011.06-1.06L6 10.94l6.72-6.72a.75.75 0 011.06 0z"></path>
</svg></clipboard-copy>
</div>
</div>
<p class="mt-2 mb-0 f6 color-fg-muted">
Work fast with our official CLI.
<a href="https://cli.github.com" target="_blank">Learn more</a>.
</p>
</div>
</tab-container>
</li>
<li data-platforms="windows,mac" class="Box-row Box-row--hover-gray p-3 mt-0 rounded-0 js-remove-unless-platform">
<a class="d-flex flex-items-center color-fg-default text-bold no-underline" data-hydro-click="{&quot;event_type&quot;:&quot;clone_or_download.click&quot;,&quot;payload&quot;:{&quot;feature_clicked&quot;:&quot;OPEN_IN_DESKTOP&quot;,&quot;git_repository_type&quot;:&quot;REPOSITORY&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="927f99afc018dda509deb0512351ce17fcf26522547814e37f182cd9adab9390" data-action="click:get-repo#showDownloadMessage" href="https://desktop.github.com">
<svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-desktop-download mr-2">
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<details
data-target="readme-toc.trigger"
data-menu-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;trigger&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}"
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class="SelectMenu-input form-control js-filterable-field"
id="toc-filter-field"
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aria-label="Filter headings">
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<div class="SelectMenu-list SelectMenu-list--borderless p-2" style="overscroll-behavior: contain;" data-filterable-for="toc-filter-field" data-filterable-type="substring">
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 text-emphasized" style="-webkit-box-orient: vertical; padding-left: 12px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#aquery-database">AQuery++ Database</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 24px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#introduction">Introduction</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 24px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#requirements">Requirements</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 24px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#installation">Installation</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 36px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#windows">Windows</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 36px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#macos">macOS</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 36px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#linux">Linux</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 36px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#docker">Docker:</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 24px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#usage">Usage</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 48px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#commands">Commands:</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 36px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#example">Example:</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 24px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#architecture">Architecture</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 36px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#aquery-compiler">AQuery Compiler</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 36px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#execution-engines">Execution Engines</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 24px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#roadmap">Roadmap</a>
<a role="menuitem" class="filter-item SelectMenu-item ws-normal wb-break-word line-clamp-2 py-1 " style="-webkit-box-orient: vertical; padding-left: 24px;" data-action="click:readme-toc#blur" data-targets="readme-toc.entries" data-hydro-click="{&quot;event_type&quot;:&quot;repository_toc_menu.click&quot;,&quot;payload&quot;:{&quot;target&quot;:&quot;entry&quot;,&quot;repository_id&quot;:484854813,&quot;originating_url&quot;:&quot;https://github.com/sunyinqi0508/AQuery2&quot;,&quot;user_id&quot;:null}}" data-hydro-click-hmac="a19c91dc1e47261718ab04ad7737db8e20e9ad3c698d76bd77d6e26f44d22757" href="#known-issues">Known Issues:</a>
</div>
</div>
</details-menu>
</details>
<h2 class="Box-title">
<a href="#readme" data-view-component="true" class="Link--primary">README.md</a>
</h2>
</div>
</div>
<div data-target="readme-toc.content" class="Box-body px-5 pb-5">
<article class="markdown-body entry-content container-lg" itemprop="text"><h1 dir="auto"><a id="user-content-aquery-database" class="anchor" aria-hidden="true" href="#aquery-database"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>AQuery++ Database</h1>
<h2 dir="auto"><a id="user-content-introduction" class="anchor" aria-hidden="true" href="#introduction"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Introduction</h2>
<p dir="auto">AQuery++ Database is a cross-platform, In-Memory Column-Store Database that incorporates compiled query execution.</p>
<h2 dir="auto"><a id="user-content-requirements" class="anchor" aria-hidden="true" href="#requirements"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Requirements</h2>
<ol dir="auto">
<li>
<p dir="auto">Recent version of Linux, Windows or MacOS, with recent C++ compiler that has C++17 (1z) support. (however c++20 is recommended if available for heterogeneous lookup on unordered containers)</p>
<ul dir="auto">
<li>GCC: 9.0 or above (g++ 7.x, 8.x fail to handle fold-expressions due to a compiler bug)</li>
<li>Clang: 5.0 or above (Recommended)</li>
<li>MSVC: 2019 or later (2022 or above is recommended)</li>
</ul>
</li>
<li>
<p dir="auto">Monetdb for Hybrid Engine</p>
<ul dir="auto">
<li>On windows, the required libraries and headers are already included in the repo.</li>
<li>On Linux, see <a href="https://www.monetdb.org/easy-setup/" rel="nofollow">Monetdb Easy Setup</a> for instructions.</li>
<li>On MacOS, Monetdb can be easily installed in homebrew <code>brew install monetdb</code>.</li>
</ul>
</li>
<li>
<p dir="auto">Python 3.6 or above and install required packages in requirements.txt by <code>python3 -m pip install -r requirements.txt</code></p>
</li>
</ol>
<h2 dir="auto"><a id="user-content-installation" class="anchor" aria-hidden="true" href="#installation"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Installation</h2>
<p dir="auto">AQuery is tested on mainstream operating systems such as Windows, macOS and Linux</p>
<h3 dir="auto"><a id="user-content-windows" class="anchor" aria-hidden="true" href="#windows"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Windows</h3>
<p dir="auto">There're multiple options to run AQuery on Windows. You can use the native toolchain from Microsoft Visual Studio or gcc from Cygwin/MinGW or run it under Windows Subsystem for Linux.</p>
<ul dir="auto">
<li>
<p dir="auto">For WSL, Docker or Linux virtual machines, see Linux, Docker sections below</p>
</li>
<li>
<p dir="auto">For Visual Studio:</p>
<ol dir="auto">
<li>Install python3.6 or above from <a href="https://www.python.org/downloads/windows/" rel="nofollow">official website</a> or Microsoft Store.</li>
<li>Install Microsoft Visual Studio 2022 or later with <strong>Desktop development with C++</strong> selected.</li>
<li>Clone AQuery repo from <a href="https://github.com/sunyinqi0508/AQuery2">Github</a></li>
<li>Install python requirements with pip <code>python3 -m pip install -r requirements.txt</code></li>
<li>Change the build driver from aquery_config.py to "MSBuild"</li>
<li>The libraries and headers for Monetdb are already included in msc-plugins, however you can also choose to download them from <a href="https://www.monetdb.org/easy-setup/" rel="nofollow">Monetdb Easy Setup</a> and put them in the same place.</li>
</ol>
</li>
<li>
<p dir="auto">For MinGW:</p>
<ol dir="auto">
<li>Install gcc and python3 using the package manager. (For Msys2, <code>pacman -S gcc python3</code>)</li>
<li>Clone AQuery repo from Github</li>
<li>Install python requirements</li>
<li>The prebuilt binaries are included in ./lib directory. However, you could also rebuild them from <a href="https://github.com/MonetDB/MonetDB">source</a>.</li>
</ol>
</li>
<li>
<p dir="auto">Note that it might be possible to use python from python.org or Microsoft store with gcc from MinGW. However, it might not work because of ABI breakage. So the better way is to use gcc with MinGW python from pacman or use clang/MSVC instead.</p>
</li>
</ul>
<h3 dir="auto"><a id="user-content-macos" class="anchor" aria-hidden="true" href="#macos"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>macOS</h3>
<ul dir="auto">
<li>Install a package manager such as <a href="https://brew.sh" rel="nofollow">homebrew</a></li>
<li>Install python3 and monetdb using homebrew <code>brew install python3 monetdb</code></li>
<li>Install C++ compiler come with Xcode commandline tool by <code>xcode-select --install</code> or from homebrew</li>
<li>If you have multiple C++ compilers on the system. Specify C++ compiler by setting the <strong>CXX</strong> environment variable. e.g. <code>export CXX=clang</code></li>
<li>Install python packages from <strong>requirements.txt</strong></li>
</ul>
<p dir="auto"><strong>for arm64 macOS users</strong></p>
<ul dir="auto">
<li>In theory, AQuery++ could work on both native arm64 and x86_64 through Rosetta. But for maximum performance, running native is preferred.</li>
<li>However, they can't be mixed up, i.e. make sure every component, <code>python</code> binary, <code>C++ compiler</code>, <code>monetdb</code> library and system commandline utilities such as <code>uname</code> should have the same architecture.</li>
<li>Because I can't get access to an arm-based mac to fully test this setup, there might still be issues. Please open an issue if you encounter any problems.</li>
</ul>
<h3 dir="auto"><a id="user-content-linux" class="anchor" aria-hidden="true" href="#linux"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Linux</h3>
<ul dir="auto">
<li>Install monetdb, see <a href="https://www.monetdb.org/easy-setup/" rel="nofollow">Monetdb Easy Setup</a> for instructions.</li>
<li>Install python3, C++ compiler and git. (For Ubuntu, run <code>apt update &amp;&amp; apt install -y python3 python3-pip clang-14 libmonetdbe-dev git </code>)</li>
<li>Install required python packages by <code>python3 -m pip install -r requirements.txt</code></li>
<li>If you have multiple C++ compilers on the system. Specify C++ compiler by setting the <strong>CXX</strong> environment variable. e.g. <code>export CXX=clang++-14</code></li>
</ul>
<h3 dir="auto"><a id="user-content-docker" class="anchor" aria-hidden="true" href="#docker"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Docker:</h3>
<ul dir="auto">
<li>Alternatively, you can also use docker to run AQuery.</li>
<li>Type <code>make docker</code> to build the docker image from scratch.</li>
<li>For Arm-based Mac users, you would need to build and run the x86_64 docker image because MonetDB doesn't offer official binaries for arm64 Linux.</li>
</ul>
<h2 dir="auto"><a id="user-content-usage" class="anchor" aria-hidden="true" href="#usage"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Usage</h2>
<p dir="auto"><code>python3 prompt.py</code> will launch the interactive command prompt. The server binary will be automatically rebuilt and started.</p>
<h4 dir="auto"><a id="user-content-commands" class="anchor" aria-hidden="true" href="#commands"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Commands:</h4>
<ul dir="auto">
<li>
<p dir="auto"><code>&lt;sql statement&gt;</code>: parse AQuery statement</p>
</li>
<li>
<p dir="auto"><code>f &lt;filename&gt;</code>: parse all AQuery statements in file</p>
</li>
<li>
<p dir="auto"><code>dbg</code> start debugging session</p>
</li>
<li>
<p dir="auto"><code>print</code>: printout parsed AQuery statements</p>
</li>
<li>
<p dir="auto"><code>xexec</code>: execute last parsed statement(s) with Hybrid Execution Engine. Hybrid Execution Engine decouples the query into two parts. The standard SQL (MonetDB dialect) part is executed by an Embedded version of Monetdb and everything else is executed by a post-process module which is generated by AQuery++ Compiler in C++ and then compiled and executed.</p>
</li>
<li>
<p dir="auto"><code>save &lt;OPTIONAL: filename&gt;</code>: save current code snippet. will use random filename if not specified.</p>
</li>
<li>
<p dir="auto"><code>exit</code>: quit the prompt</p>
</li>
<li>
<p dir="auto"><code>r</code>: run the last generated code snippet</p>
</li>
</ul>
<h3 dir="auto"><a id="user-content-example" class="anchor" aria-hidden="true" href="#example"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Example:</h3>
<p dir="auto"><code>f moving_avg.a</code> <br>
<code>xexec</code></p>
<p dir="auto">See ./tests/ for more examples.</p>
<h2 dir="auto"><a id="user-content-architecture" class="anchor" aria-hidden="true" href="#architecture"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Architecture</h2>
<p dir="auto"><a target="_blank" rel="noopener noreferrer" href="/sunyinqi0508/AQuery2/blob/master/docs/arch-hybrid.svg"><img src="/sunyinqi0508/AQuery2/raw/master/docs/arch-hybrid.svg" alt="Architecture" style="max-width: 100%;"></a></p>
<h3 dir="auto"><a id="user-content-aquery-compiler" class="anchor" aria-hidden="true" href="#aquery-compiler"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>AQuery Compiler</h3>
<ul dir="auto">
<li>The query is first processed by the AQuery Compiler which is composed of a frontend that parses the query into AST and a backend that generates target code that delivers the query.</li>
<li>Front end of AQuery++ Compiler is built on top of <a href="https://github.com/klahnakoski/mo-sql-parsing">mo-sql-parsing</a> with modifications to handle AQuery dialect and extension.</li>
<li>Backend of AQuery++ Compiler generates target code dependent on the Execution Engine. It can either be the C++ code for AQuery Execution Engine or sql and C++ post-processor for Hybrid Engine or k9 for the k9 Engine.</li>
</ul>
<h3 dir="auto"><a id="user-content-execution-engines" class="anchor" aria-hidden="true" href="#execution-engines"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Execution Engines</h3>
<ul dir="auto">
<li>AQuery++ supports different execution engines thanks to the decoupled compiler structure.</li>
<li>AQuery Execution Engine: executes queries by compiling the query plan to C++ code. Doesn't support joins and udf functions.</li>
<li>Hybrid Execution Engine: decouples the query into two parts. The sql-compliant part is executed by an Embedded version of Monetdb and everything else is executed by a post-process module which is generated by AQuery++ Compiler in C++ and then compiled and executed.</li>
<li>K9 Execution Engine: (discontinued).</li>
</ul>
<h2 dir="auto"><a id="user-content-roadmap" class="anchor" aria-hidden="true" href="#roadmap"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Roadmap</h2>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> SQL Parser -&gt; AQuery Parser (Front End)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> AQuery-C++ Compiler (Back End)
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Schema and Data Model</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Data acquisition/output from/to csv file</li>
</ul>
</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Execution Engine
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Projections and single-group Aggregations</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Group by Aggregations</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Filters</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Order by</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Assumption</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Flatten</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> UDFs (Hybrid Engine only)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> User Module</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Triggers</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Join (Hybrid Engine only)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Subqueries</li>
</ul>
</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Query Optimization
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Selection/Order by push-down</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Join Optimization (Only in Hybrid Engine)</li>
</ul>
</li>
</ul>
<h2 dir="auto"><a id="user-content-known-issues" class="anchor" aria-hidden="true" href="#known-issues"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path fill-rule="evenodd" d="M7.775 3.275a.75.75 0 001.06 1.06l1.25-1.25a2 2 0 112.83 2.83l-2.5 2.5a2 2 0 01-2.83 0 .75.75 0 00-1.06 1.06 3.5 3.5 0 004.95 0l2.5-2.5a3.5 3.5 0 00-4.95-4.95l-1.25 1.25zm-4.69 9.64a2 2 0 010-2.83l2.5-2.5a2 2 0 012.83 0 .75.75 0 001.06-1.06 3.5 3.5 0 00-4.95 0l-2.5 2.5a3.5 3.5 0 004.95 4.95l1.25-1.25a.75.75 0 00-1.06-1.06l-1.25 1.25a2 2 0 01-2.83 0z"></path></svg></a>Known Issues:</h2>
<ul class="contains-task-list">
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Interval based triggers</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Hot reloading server binary</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Bug fixes: type deduction misaligned in Hybrid Engine</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Investigation: Using postproc only for q1 in Hybrid Engine (make is_special always on)</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> C++ Meta-Programming: Eliminate template recursions as much as possible.</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Functionality: Basic helper functions in aquery</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox" checked=""> Improvement: More DDLs, e.g. drop table, update table, etc.</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Bug: Join-Aware Column management</li>
<li class="task-list-item"><input type="checkbox" id="" disabled="" class="task-list-item-checkbox"> Bug: Order By after Group By</li>
</ul>
</article>
</div>
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<details class="details-reset details-overlay details-overlay-dark lh-default color-fg-default hx_rsm" open>
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<template id="snippet-clipboard-copy-button">
<div class="zeroclipboard-container position-absolute right-0 top-0">
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