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Added prev/next aggregation functions

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bill
2022-10-17 15:13:48 +08:00
parent a9b0c185e1
commit 818ab3b2e5
8 changed files with 45 additions and 8 deletions
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engine/types.py
+3 -1
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@@ -311,6 +311,8 @@ opeq = OperatorBase('eq', 2, logical, cname = '==', sqlname = '=', call = binary
opnot = OperatorBase('not', 1, logical, cname = '!', sqlname = 'NOT', call = unary_op_behavior)
opdistinct = OperatorBase('distinct', 1, as_is, cname = '.distinct()', sqlname = 'distinct', call = distinct_behavior)
# functional
fnprev = OperatorBase('prev', 1, as_is, cname = 'prev', sqlname = 'PREV', call = fn_behavior)
fnnext = OperatorBase('next', 1, as_is, cname = 'aggnext', sqlname = 'NEXT', call = fn_behavior)
fnmax = OperatorBase('max', 1, as_is, cname = 'max', sqlname = 'MAX', call = fn_behavior)
fnmin = OperatorBase('min', 1, as_is, cname = 'min', sqlname = 'MIN', call = fn_behavior)
fndeltas = OperatorBase('deltas', 1, as_is, cname = 'deltas', sqlname = 'DELTAS', call = fn_behavior)
@@ -358,7 +360,7 @@ builtin_cstdlib = _op_make_dict(fnsqrt, fnlog, fnsin, fncos, fntan, fnpow)
builtin_func = _op_make_dict(fnmax, fnmin, fnsum, fnavg, fnmaxs,
fnmins, fndeltas, fnratios, fnlast,
fnfirst, fnsums, fnavgs, fncnt,
fnpack, fntrunc)
fnpack, fntrunc, fnprev, fnnext)
user_module_func = {}
builtin_operators : Dict[str, OperatorBase] = {**builtin_binary_arith, **builtin_binary_logical,
**builtin_unary_arith, **builtin_unary_logical, **builtin_unary_special, **builtin_func, **builtin_cstdlib,