DRAFT | MDEV-35026 - DROP CONSTRAINT for self referencing FK fails without error, but modifies another UNIQUE KEY definied with USING HASH#5380
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This pull request modifies sql/sql_table.cc to adjust how the key algorithm is determined during an alter table preparation. Specifically, when the key algorithm is HA_KEY_ALG_LONG_HASH, it is now set to HA_KEY_ALG_HASH if either fast_alter_partition is active or if the ALTER_CHANGE_COLUMN flag is not set. There are no review comments, and I have no additional feedback to provide.
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