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| author | Sergei Petrunia <sergey@mariadb.com> | 2023-05-03 15:15:37 +0300 |
|---|---|---|
| committer | Sergei Petrunia <sergey@mariadb.com> | 2023-05-09 10:12:27 +0300 |
| commit | b3edbf25a1f3bb4c8d7e9824096fc0538c04a977 (patch) | |
| tree | 03ec8f43b0a2a5383ac50d1baeeb74c12632df04 /mysql-test/t/create.test | |
| parent | 63df43a0e830c6b54178574e4f72f21d19ed765e (diff) | |
| download | mariadb-git-b3edbf25a1f3bb4c8d7e9824096fc0538c04a977.tar.gz | |
MDEV-31022: SIGSEGV in maria_create from create_internal_tmp_tablebb-11.0-MDEV-31022-variant4
The code in create_internal_tmp_table() didn't take into account that
now temporary (derived) tables may have multiple indexes:
- one index due to duplicate removal
= In this example created by conversion of big-IN(...) into subquery
= this index might be converted into a "unique constraint" if the key
length is too large.
- one index added by derived_with_keys optimization.
Make create_internal_tmp_table() handle multiple indexes.
Before this patch, use of a unique constraint was indicated in
TABLE_SHARE::uniques. This was ok as unique constraint was the only index
in the table. Now it's no longer the case so TABLE_SHARE::uniques is removed
and replaced with an in-memory-only flag HA_UNIQUE_HASH.
This patch is based on Monty's patch.
Co-Author: Monty <monty@mariadb.org>
Diffstat (limited to 'mysql-test/t/create.test')
0 files changed, 0 insertions, 0 deletions