database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-08-08 11:22:35 +03:00
Code Activity

MDEV-30111 InnoDB: Failing assertion: update->n_fields == 0 in row_ins_sec_index_entry_by_modify

Browse Source 
Also fixes:

 MDEV-32190 Index corruption with unique key and nopad collation (without DESC or HASH keys)
 MDEV-28328 Assertion failures in btr0cur.cc upon INSERT or in row0sel.cc afterwards

The code in strings/strcoll.inl when comparing an empty string
to a string like 0x0001050001 did not take into account
that the leftmost weight in the latter can be zero, while
there are some more weights can follow the zero weight.

Rewriting the code to treat the shorter string as smaller than
a longer string.
This commit is contained in:
Alexander Barkov
2024-11-08 13:51:34 +04:00
parent 77ea99a4b5
commit d261fa5c70
25 changed files with 340 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
strings/strcoll.inl
View File

@@ -190,12 +190,14 @@ MY_FUNCTION_NAME(strnncoll)(CHARSET_INFO *cs __attribute__((unused)),
0 >0 "a" is a prefix of "b", so "a" is smaller.
>0 0 "b" is a prefix of "a", check b_is_prefix.
>0 >0 Two weights were scanned, check weight difference.
Note: weights can be zero and positive (never negative).
*/
if (!a_wlen)
return b_wlen ? -b_weight : 0;
return b_wlen ? -1 : 0;
if (!b_wlen)
return b_is_prefix ? 0 : a_weight;
return b_is_prefix ? 0 : +1;
if ((res= (a_weight - b_weight)))
return res;