diff options
| author |  Adam Chlipala <adam@chlipala.net> | 2012-06-03 11:29:31 -0400 |
|---|---|---|
| committer | Adam Chlipala <adam@chlipala.net> | 2012-06-03 11:29:31 -0400 |
| commit | 6cd9389c53382c936a8bd71c92873906624d2a4e (patch) | |
| tree | deacf0a9ebedccbc3e22fdb143c51d3dcc153a5b /src/urweb.grm | |
| parent | ecb92d9539880cc59a371c786af5312b833ff8ca (diff) | |
Lighter-weight encoding of window function use
Diffstat (limited to 'src/urweb.grm')
| -rw-r--r-- | src/urweb.grm | 87 |
1 files changed, 40 insertions, 47 deletions
diff --git a/src/urweb.grm b/src/urweb.grm index eec8f8c1..708e5fcd 100644 --- a/src/urweb.grm +++ b/src/urweb.grm @@ -309,7 +309,7 @@ fun applyWindow loc e window = (ECApp ((EVar (["Basis"], "sql_order_by_Nil", Infer), dummy), (CWild (KRecord (KType, dummy), dummy), dummy)), dummy))) - val e' = (EVar (["Basis"], "sql_window", Infer), loc) + val e' = (EVar (["Basis"], "sql_window_function", Infer), loc) val e' = (EApp (e', e), loc) val e' = (EApp (e', pb), loc) in @@ -345,7 +345,7 @@ fun applyWindow loc e window = | UNION | INTERSECT | EXCEPT | LIMIT | OFFSET | ALL | TRUE | FALSE | CAND | OR | NOT - | COUNT | AVG | SUM | MIN | MAX | RANK + | COUNT | AVG | SUM | MIN | MAX | RANK | PARTITION | OVER | ASC | DESC | RANDOM | INSERT | INTO | VALUES | UPDATE | SET | DELETE | NULL | IS | COALESCE | LIKE | CURRENT_TIMESTAMP @@ -353,7 +353,6 @@ fun applyWindow loc e window = | CCONSTRAINT | UNIQUE | CHECK | PRIMARY | FOREIGN | KEY | ON | NO | ACTION | RESTRICT | CASCADE | REFERENCES | JOIN | INNER | CROSS | OUTER | LEFT | RIGHT | FULL | CIF | CTHEN | CELSE - | OVER | PARTITION %nonterm file of decl list @@ -1755,6 +1754,8 @@ query1 : SELECT dopt select FROM tables wopt gopt hopt exps) end + val exps = map (fn (c, e) => (c, (EApp ((EVar (["Basis"], "sql_window", Infer), loc), e), loc))) exps + val sel = (CRecord sel, loc) val grp = case gopt of @@ -2041,49 +2042,37 @@ sqlexp : TRUE (sql_inject (EVar (["Basis"], "True", In | NULL (sql_inject ((EVar (["Basis"], "None", Infer), s (NULLleft, NULLright)))) - | COUNT LPAREN STAR RPAREN window (let - val loc = s (COUNTleft, windowright) - in - case window of - NONE => (EVar (["Basis"], "sql_count", Infer), loc) - | SOME _ => - let - val e = (EVar (["Basis"], "sql_window_count", Infer), loc) - in - applyWindow loc e window - end - end) - | RANK UNIT window (let - val loc = s (RANKleft, windowright) - val e = (EVar (["Basis"], "sql_window_rank", Infer), loc) - in - applyWindow loc e window - end) - | COUNT LPAREN sqlexp RPAREN window (let - val loc = s (COUNTleft, windowright) - - val e = (EVar (["Basis"], "sql_count_col", Infer), loc) - in - case window of - NONE => - let - val e = (EApp ((EVar (["Basis"], "sql_aggregate", Infer), loc), - e), loc) - in - (EApp (e, sqlexp), loc) - end - | SOME _ => - let - val e = (EApp ((EVar (["Basis"], "sql_window_aggregate", Infer), loc), - e), loc) - val e = (EApp (e, sqlexp), loc) - in - applyWindow loc e window - end - end) + | COUNT LPAREN STAR RPAREN window(let + val loc = s (COUNTleft, windowright) + in + case window of + NONE => (EVar (["Basis"], "sql_count", Infer), loc) + | SOME _ => applyWindow loc (EVar (["Basis"], "sql_window_count", Infer), loc) window + end) + | COUNT LPAREN sqlexp RPAREN window(let + val loc = s (COUNTleft, RPARENright) + val e = (EVar (["Basis"], "sql_count_col", Infer), loc) + in + case window of + NONE => + let + val e = (EApp ((EVar (["Basis"], "sql_aggregate", Infer), loc), + e), loc) + in + (EApp (e, sqlexp), loc) + end + | SOME _ => + let + val e = (EVar (["Basis"], "sql_count_col", Infer), loc) + val e = (EApp ((EVar (["Basis"], "sql_window_aggregate", Infer), loc), + e), loc) + in + applyWindow loc (EApp (e, sqlexp), loc) window + end + end) | sqlagg LPAREN sqlexp RPAREN window (let - val loc = s (sqlaggleft, windowright) - + val loc = s (sqlaggleft, RPARENright) + val e = (EVar (["Basis"], "sql_" ^ sqlagg, Infer), loc) in case window of @@ -2098,11 +2087,15 @@ sqlexp : TRUE (sql_inject (EVar (["Basis"], "True", In let val e = (EApp ((EVar (["Basis"], "sql_window_aggregate", Infer), loc), e), loc) - val e = (EApp (e, sqlexp), loc) in - applyWindow loc e window + applyWindow loc (EApp (e, sqlexp), loc) window end end) + | RANK UNIT window (let + val loc = s (RANKleft, windowright) + in + applyWindow loc (EVar (["Basis"], "sql_rank", Infer), loc) window + end) | COALESCE LPAREN sqlexp COMMA sqlexp RPAREN (let val loc = s (COALESCEright, sqlexp2right) |