Eugene Kosov 802ce9672f MDEV-18041 Database corruption after renaming a prefix-indexed column ...

This is a regression after MDEV-13671.

The bug is related to key part prefix lengths wich are stored in SYS_FIELDS.
Storage format is not obvious and was handled incorrectly which led to data
dictionary corruption.

SYS_FIELDS.POS actually contains prefix length too in case if any key part
has prefix length.

innobase_rename_column_try(): fixed prefixes handling

Tests for prefixed indexes added too.

Closes #1063

2018-12-29 22:57:05 +02:00

19 KiB

Raw Blame History

View Raw