database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-07-30 16:24:05 +03:00
Code Activity

Bug#33873: Fast ALTER TABLE doesn't work with multibyte character sets

Browse Source 
The problem was that when comparing tables for a possible
fast alter table, the comparison was being performed using
the parsed information and not the final definition.
      
The solution is to use the possible final table layout to
compare if a fast alter is possible or not.
This commit is contained in:
Davi Arnaut
2008-06-17 11:12:21 -03:00
parent 4165929973
commit c20188e011
5 changed files with 152 additions and 80 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
mysql-test/r/alter_table.result
View File

@ -1184,3 +1184,42 @@ check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
drop table t1;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (id int, c int) character set latin1;
INSERT INTO t1 VALUES (1,1);
ALTER TABLE t1 CHANGE c d int;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
ALTER TABLE t1 CHANGE d c int;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
ALTER TABLE t1 MODIFY c VARCHAR(10);
affected rows: 1
info: Records: 1 Duplicates: 0 Warnings: 0
ALTER TABLE t1 CHANGE c d varchar(10);
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
ALTER TABLE t1 CHANGE d c varchar(10);
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
DROP TABLE t1;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (id int, c int) character set utf8;
INSERT INTO t1 VALUES (1,1);
ALTER TABLE t1 CHANGE c d int;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
ALTER TABLE t1 CHANGE d c int;
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
ALTER TABLE t1 MODIFY c VARCHAR(10);
affected rows: 1
info: Records: 1 Duplicates: 0 Warnings: 0
ALTER TABLE t1 CHANGE c d varchar(10);
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
ALTER TABLE t1 CHANGE d c varchar(10);
affected rows: 0
info: Records: 0 Duplicates: 0 Warnings: 0
DROP TABLE t1;
End of 5.1 tests