planner: testing the ExtractFD just after the plan building phase #6
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winoros
changed the title
AilinKid
reviewed
Feb 23, 2022
| }, | ||
| // test functional dependency derived from keys in where condition | ||
| { | ||
| sql: "select * from x1 where c = d group by b, c", | ||
| best: "DataScan(x1)->Aggr(firstrow(test.x1.a),firstrow(test.x1.b),firstrow(test.x1.c),firstrow(test.x1.d))->Projection", | ||
| best: "DataScan(x1)->Sel([eq(test.x1.c, test.x1.d)])->Aggr(firstrow(test.x1.a),firstrow(test.x1.b),firstrow(test.x1.c),firstrow(test.x1.d))->Projection", |
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Seem need to show 4 item fd here? A>>>B>>>C>>>D
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What problem does this PR solve?
To support
only_full_group_bychecking and to test the basic usage. We just test the FD result after the plan building phase.What is changed and how it works?
Check List
Tests