fix(optimizer): fix lateral subquery with cte #19162
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st1page
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Oct 29, 2024
| └─BatchHashJoin { type: Inner, predicate: t1.y IS NOT DISTINCT FROM t2.y AND t1.x = t2.x, output: [t1.x, t1.y] } | ||
| ├─BatchExchange { order: [], dist: HashShard(t1.y) } | ||
| │ └─BatchScan { table: t1, columns: [t1.x, t1.y], distribution: SomeShard } | ||
| └─BatchGroupTopN { order: [t2.y ASC], limit: 1, offset: 0, group_key: [t2.y] } |
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🤔 Could it be the Agg operator? Maybe we should generate LogicalDedup instead of LogicalTopN in ApplyLimitTransposeRule
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Yes, I think we can. Let's open an issue and create another PR to optimize it.
Oh. It only works for limit 1, but not general.
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Co-authored-by: Dylan <[email protected]>
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What's changed and what's your intention?
ShareRelation in the binder and it should be visited when transforming the CorrelatedInputRef.Checklist
./risedev check(or alias,./risedev c)Documentation
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