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COALESCE(l.id, r.id) FROM l INNER/LEFT JOIN r ON l.id=r.id
Here for both inner ad left joins we can simplify it to l.id since it's a join key. Similarly for the converse for right join. We should apply this rule before join reordering
The text was updated successfully, but these errors were encountered:
We have seen queries like:
Here for both inner ad left joins we can simplify it to
l.id
since it's a join key. Similarly for the converse for right join. We should apply this rule before join reorderingThe text was updated successfully, but these errors were encountered: