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MDEV-11114 Cannot drop column referenced by CHECK constraint

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SQL Standard behavior for DROP COLUMN xxx RESTRICT:
* If a constraint (UNIQUE or CHECK) uses only the dropped column,
  it's automatically dropped too. If it uses many columns - an error.
This commit is contained in:
Sergei Golubchik
2017-08-12 18:52:38 +02:00
parent 28ddc9b3bb
commit 04b288ae47
17 changed files with 121 additions and 200 deletions
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42
mysql-test/suite/gcol/t/innodb_virtual_basic.test
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@ -780,48 +780,6 @@ alter table t add c INT GENERATED ALWAYS AS(a/b);
create index idx on t(c);
DROP TABLE t;
CREATE TABLE t (
pk INTEGER AUTO_INCREMENT,
col_int_nokey INTEGER /*! NULL */,
col_int INT GENERATED ALWAYS AS (col_int_nokey + col_int_nokey) STORED,
col_int_key INTEGER GENERATED ALWAYS AS (col_int + col_int_nokey) VIRTUAL,
col_date_nokey DATE /*! NULL */,
col_date DATE GENERATED ALWAYS AS (DATE_ADD(col_date_nokey,interval 30 day)) STORED,
col_date_key DATE GENERATED ALWAYS AS (DATE_ADD(col_date,interval 30 day)) VIRTUAL,
col_datetime_nokey DATETIME /*! NULL */,
col_time_nokey TIME /*! NULL */,
col_datetime DATETIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time_nokey)) STORED,
col_time TIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time_nokey)) STORED,
col_datetime_key DATETIME GENERATED ALWAYS AS (ADDTIME(col_datetime, col_time_nokey)) VIRTUAL,
col_time_key TIME GENERATED ALWAYS AS (ADDTIME(col_datetime_nokey, col_time)) VIRTUAL,
col_varchar_nokey VARCHAR(1) /*! NULL */,
col_varchar VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar_nokey,col_varchar_nokey)) STORED,
col_varchar_key VARCHAR(2) GENERATED ALWAYS AS (CONCAT(col_varchar, 'x')) VIRTUAL,
unique KEY (pk,col_int_key),
KEY(col_int),
KEY(col_date),
KEY(col_datetime),
KEY(col_time),
KEY(col_varchar),
UNIQUE KEY (col_int_key),
KEY (col_time_key),
KEY (col_datetime_key),
UNIQUE KEY (col_int_key, col_varchar_key),
KEY (col_int_key, col_int_nokey),
KEY(col_int_key,col_date_key),
KEY(col_int_key, col_time_key),
KEY(col_int_key, col_datetime_key),
KEY(col_date_key,col_time_key,col_datetime_key),
KEY (col_varchar_key, col_varchar_nokey),
UNIQUE KEY (col_int_key, col_varchar_key, col_date_key, col_time_key, col_datetime_key)
) AUTO_INCREMENT=10 ENGINE=INNODB PARTITION BY KEY(col_int_key) PARTITIONS 3;
ALTER TABLE t DROP COLUMN `pk`;
SHOW CREATE TABLE t;
DROP TABLE t;
CREATE TABLE t (a INT, b INT, c INT GENERATED ALWAYS AS(a+b), h VARCHAR(10));
INSERT INTO t VALUES (11, 3, DEFAULT, 'mm');