AQuery Database
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
bill sun ece2a6cc9f
udf support for monetdbe backend
2 years ago
aquery_parser udf support for monetdbe backend 2 years ago
docs fix gitw 2 years ago
engine udf support for monetdbe backend 2 years ago
lib udf support for monetdbe backend 2 years ago
monetdb udf support for monetdbe backend 2 years ago
msc-plugin udf support for monetdbe backend 2 years ago
msvs-py fix gitw 2 years ago
reconstruct udf support for monetdbe backend 2 years ago
server udf support for monetdbe backend 2 years ago
.gitignore fix gitw 2 years ago
LICENSE fix gitw 2 years ago
Makefile udf support for monetdbe backend 2 years ago
README.md fix gitw 2 years ago
a.exe udf support for monetdbe backend 2 years ago
a.exp udf support for monetdbe backend 2 years ago
a.lib udf support for monetdbe backend 2 years ago
aquery_config.py udf support for monetdbe backend 2 years ago
build_instructions.md udf support for monetdbe backend 2 years ago
csv.h fix gitw 2 years ago
dbconn.py fix gitw 2 years ago
funcs.a udf support for monetdbe backend 2 years ago
header.cxx fix gitw 2 years ago
index.html fix gitw 2 years ago
joins.a udf support for monetdbe backend 2 years ago
mmw.cpp fix gitw 2 years ago
moving_avg.a udf support for monetdbe backend 2 years ago
moving_avg.csv fix gitw 2 years ago
nyctx100.csv fix gitw 2 years ago
out.cpp udf support for monetdbe backend 2 years ago
out_attempt1.cpp fix gitw 2 years ago
prompt.py udf support for monetdbe backend 2 years ago
python3.exe.stackdump udf support for monetdbe backend 2 years ago
q.sql fix gitw 2 years ago
q1.sql fix gitw 2 years ago
requirements.txt fix gitw 2 years ago
server.exe fix gitw 2 years ago
server2.exp udf support for monetdbe backend 2 years ago
server2.lib udf support for monetdbe backend 2 years ago
stock.a fix gitw 2 years ago
test.csv fix gitw 2 years ago
udf.hpp udf support for monetdbe backend 2 years ago

README.md

AQuery++ DB

Introduction

AQuery++ Database is a cross-platform, In-Memory Column-Store Database that incorporates compiled query execution. Compiler frontend built on top of mo-sql-parsing.

Roadmap

  • SQL Parser -> AQuery Parser (Front End)
  • AQuery-C++ Compiler (Back End)
    • Schema and Data Model
    • Data acquisition/output from/to csv file
    • Single table queries
      • Projections and Single Table Aggregations
      • Group by Aggregations
      • Filters
      • Order by
      • Assumption
      • Flatten
    • Multi-table
      • Join
    • Subqueries
  • -> Optimizing Compiler

TODO:

  • C++ Meta-Programming: Elimilate template recursions as much as possible.
  • IPC: Better ways to communicate between Interpreter (Python) and Executer (C++).
    • Sockets? stdin/stdout capture?

Requirements

Recent version of Linux, Windows or MacOS, with recent C++ compiler that has C++17 (1z) support (e.g. gcc 6.0, MSVC 2017, clang 6.0), and python 3.6 or above.

Usage

python3 prompt.py will launch the interactive command prompt. The server binary will be autometically rebuilt and started.

Commands:

  • <sql statement>: parse sql statement
  • f <filename>: parse all sql statements in file
  • print: printout parsed sql statements
  • exec: execute last parsed statement(s)
  • r: run the last generated code snippet
  • save <OPTIONAL: filename>: save current code snippet. will use random filename if not specified.
  • exit: quit the prompt

Example:

f moving_avg.a
exec