feat: remove hand-optimizations from queries #90
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ritchie46
commented
Apr 2, 2024
| @@ -42,21 +42,24 @@ def query() -> pd.DataFrame: | |||
| supplier_ds = supplier_ds() | |||
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| rsel = region_ds.r_name == "ASIA" | |||
| osel = (orders_ds.o_orderdate >= date1) & (orders_ds.o_orderdate < date2) | |||
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Filters before the join is not a direct translation from SQL. The optimizer has to determine which predicates can pass which joins.
| @@ -24,7 +24,7 @@ def q() -> None: | |||
| .filter(pl.col("p_size") == var_1) | |||
| .filter(pl.col("p_type").str.ends_with(var_2)) | |||
| .filter(pl.col("r_name") == var_3) | |||
| ).cache() | |||
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The optimizer has to find common subplans.
| @@ -18,51 +18,34 @@ def query() -> pd.DataFrame: | |||
| nonlocal lineitem | |||
| lineitem = lineitem() | |||
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| lineitem_filtered = lineitem.loc[ | |||
| :, | |||
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Hand written projection pushdown.
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@MarcoGorelli FYI.