Marko Mäkelä 0a7faed75a MDEV-22771 Instant extension of CHAR column is wrongly allowed ...

commit 854c219a7f (MDEV-17301)
broke a constraint: Fixed-length columns cannot be extended in InnoDB
without rebuilding the table.

ha_innobase::can_convert_string(): Correct the condition. We must
not allow any instantaneous change to the length of CHAR columns
measured in characters. For any format other than ROW_FORMAT=REDUNDANT,
we can allow the length in bytes to be extended if mbminlen<mbmaxlen held
before the change of the character set.

2020-07-20 14:15:56 +03:00

6.2 KiB

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