diff options
| -rw-r--r-- | mysql-test/r/alter_table.result | 13 | ||||
| -rw-r--r-- | mysql-test/t/alter_table.test | 16 |
2 files changed, 29 insertions, 0 deletions
diff --git a/mysql-test/r/alter_table.result b/mysql-test/r/alter_table.result index 90dde034e10..304f562d47d 100644 --- a/mysql-test/r/alter_table.result +++ b/mysql-test/r/alter_table.result @@ -1370,3 +1370,16 @@ CREATE TABLE t1 (id int); INSERT INTO t1 VALUES (1), (2); ALTER TABLE t1 ADD COLUMN (f1 INT), ADD COLUMN (f2 INT), ADD KEY f2k(f2); DROP TABLE t1; +# +# Test for bug #53820 "ALTER a MEDIUMINT column table causes full +# table copy". +# +DROP TABLE IF EXISTS t1; +CREATE TABLE t1 (a INT, b MEDIUMINT); +INSERT INTO t1 VALUES (1, 1), (2, 2); +# The below ALTER should not copy table and so no rows should +# be shown as affected. +ALTER TABLE t1 CHANGE a id INT; +affected rows: 0 +info: Records: 0 Duplicates: 0 Warnings: 0 +DROP TABLE t1; diff --git a/mysql-test/t/alter_table.test b/mysql-test/t/alter_table.test index d7f7a12cbf8..5b5fdf50c16 100644 --- a/mysql-test/t/alter_table.test +++ b/mysql-test/t/alter_table.test @@ -1128,3 +1128,19 @@ INSERT INTO t1 VALUES (1), (2); ALTER TABLE t1 ADD COLUMN (f1 INT), ADD COLUMN (f2 INT), ADD KEY f2k(f2); DROP TABLE t1; + +--echo # +--echo # Test for bug #53820 "ALTER a MEDIUMINT column table causes full +--echo # table copy". +--echo # +--disable_warnings +DROP TABLE IF EXISTS t1; +--enable_warnings +CREATE TABLE t1 (a INT, b MEDIUMINT); +INSERT INTO t1 VALUES (1, 1), (2, 2); +--echo # The below ALTER should not copy table and so no rows should +--echo # be shown as affected. +--enable_info +ALTER TABLE t1 CHANGE a id INT; +--disable_info +DROP TABLE t1; |