opt: fix fetch scope in UPDATE..FROM statements#61522
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craig[bot] merged 1 commit intocockroachdb:masterfrom Mar 5, 2021
Merged
opt: fix fetch scope in UPDATE..FROM statements#61522craig[bot] merged 1 commit intocockroachdb:masterfrom
craig[bot] merged 1 commit intocockroachdb:masterfrom
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Previously, the fetch scope incorrectly included columns in the FROM clause of an UPDATE..FROM statement. As a result, column names shared by the FROM clause and the mutating table lead to ambiguity when resolving partial index DEL column expressions. This commit ensures that the fetch scope does not include columns in the FROM clause. Fixes cockroachdb#61284 Release justification: This is a low-risk bug fix to existing functionality. Release note (bug fix): An UPDATE..FROM statement where the FROM clause contained column names that match table column names erred if the table had a partial index predicate referencing those columns. This bug, present since partial indexes were released in version 20.2.0, has been fixed.
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RaduBerinde
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complete! 1 of 0 LGTMs obtained
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Previously, the fetch scope incorrectly included columns in the FROM
clause of an UPDATE..FROM statement. As a result, column names shared by
the FROM clause and the mutating table lead to ambiguity when resolving
partial index DEL column expressions. This commit ensures that the fetch
scope does not include columns in the FROM clause.
Fixes #61284
Release justification: This is a low-risk bug fix to existing
functionality.
Release note (bug fix): An UPDATE..FROM statement where the FROM clause
contained column names that match table column names erred if the table
had a partial index predicate referencing those columns. This bug,
present since partial indexes were released in version 20.2.0, has been
fixed.