release-22.1: parser: fix GetTypeFromValidSQLSyntax for collated strings #97492
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yuzefovich
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I'll hold off on merging this for a few days in order to let any lurking bugs around collated strings to be exposed. |
Previously, `GetTypeFromValidSQLSyntax` would result in an error when attempting to parse a collated string. This is due to an expression like `1::STRING COLLATE en` being parsed as `CollateExpr(CastExpr)` whereas the function expected just `CastExpr`. This is now fixed by having a special case for the collated strings. Additionally, this commit adds a couple of testing improvements around the collated strings: - a representative collated string type is now included into `randgen.SeedTypes` (this actually exposed a minor bug in recently introduced `tree.DatumPrev` and `tree.DatumNext` methods, now fixed in this commit) - a new test is introduced that asserts that for all (with a few exceptions) type families at least one representative type is included into `randgen.SeedTypes`. Release note (bug fix): Previously, `ALTER TABLE ... INJECT STATISTICS` command would fail if a column with COLLATED STRING type had histograms to be injected, and this is now fixed. The bug has been present since at least 21.2.
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rafiss
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Feb 27, 2023
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Backport:
Please see individual PRs for details.
Two commits are squashed into one.
/cc @cockroachdb/release
Release justification: bug fix.