mariadb/mysql-test/suite/innodb/t/alter_not_null_debug.test
Thirunarayanan Balathandayuthapani d270525dfd MDEV-23805 Make Online DDL to Instant DDL when table is empty
- In ha_innobase::prepare_inplace_alter_table(), InnoDB should
check whether the table is empty. If the table is empty then
server should avoid downgrading the MDL after prepare phase.
It is more like instant alter, does change only in dicationary
and metadata.

- Changed few debug test case to make non-empty DDL table
2021-11-12 17:46:35 +05:30

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--source include/have_innodb.inc
--source include/have_debug.inc
--source include/have_debug_sync.inc
--source alter_sql_mode.inc
let $sql_mode = `SELECT @@SQL_MODE`;
let $error_code = 0;
if ($sql_mode == "STRICT_TRANS_TABLES") {
let $error_code = WARN_DATA_TRUNCATED;
}
# Alter table should fail for strict sql mode
CREATE TABLE t1(c1 INT NOT NULL, c2 INT, PRIMARY KEY(c1))ENGINE=INNODB;
INSERT INTO t1 VALUES(1, 1);
--enable_info
SET DEBUG_SYNC= 'row_merge_after_scan
SIGNAL opened WAIT_FOR flushed';
send ALTER TABLE t1 CHANGE c2 c2 INT NOT NULL DEFAULT 2;
connect (con1,localhost,root);
SET DEBUG_SYNC= 'now WAIT_FOR opened';
INSERT INTO t1 VALUES(2, NULL);
UPDATE t1 SET c1 = 3 WHERE c2 = 1;
SET DEBUG_SYNC= 'now SIGNAL flushed';
connection default;
--error $error_code
reap;
--disable_info
SELECT * FROM t1;
DROP TABLE t1;
# Alter table should successfully apply the log for the alter operation
CREATE TABLE t1(c1 INT NOT NULL, c2 INT, PRIMARY KEY(c1))ENGINE=INNODB;
INSERT INTO t1 VALUES(1, 1);
--enable_info
SET DEBUG_SYNC= 'row_merge_after_scan
SIGNAL opened WAIT_FOR flushed';
send ALTER TABLE t1 CHANGE c2 c2 INT NOT NULL DEFAULT 2;
connection con1;
SET DEBUG_SYNC= 'now WAIT_FOR opened';
INSERT INTO t1 VALUES(2, 3);
UPDATE t1 SET c1 = 3 WHERE c2 = 1;
SET DEBUG_SYNC= 'now SIGNAL flushed';
connection default;
reap;
--disable_info
SELECT * FROM t1;
DROP TABLE t1;
# Alter ignore should not give error
CREATE TABLE t1(c1 INT NOT NULL, c2 INT, c3 INT, PRIMARY KEY(c1))ENGINE=INNODB;
INSERT INTO t1 VALUES(1, 2, 3);
--enable_info
SET DEBUG_SYNC= 'row_merge_after_scan
SIGNAL opened WAIT_FOR flushed';
send ALTER IGNORE TABLE t1 CHANGE c2 c2 INT NOT NULL DEFAULT 2;
connection con1;
SET DEBUG_SYNC= 'now WAIT_FOR opened';
UPDATE t1 SET c2= 2 WHERE c1 = 1;
INSERT INTO t1 VALUES (2, NULL, 4);
SET DEBUG_SYNC= 'now SIGNAL flushed';
connection default;
reap;
--disable_info
SELECT * FROM t1;
DROP TABLE t1;
SET DEBUG_SYNC='RESET';
--echo #
--echo # MDEV-21539 Assertion ...prtype... in row_log_table_apply_convert_mrec
--echo #
CREATE TABLE t1 (f VARCHAR(8) CHARACTER SET latin1 COLLATE latin1_swedish_ci)
ENGINE=InnoDB;
INSERT INTO t1 VALUES('ZERO');
connection con1;
SET DEBUG_SYNC = 'row_log_table_apply1_before SIGNAL scanned WAIT_FOR insert_done';
send ALTER TABLE t1 MODIFY f VARCHAR(256) COLLATE latin1_german2_ci NOT NULL;
--echo # session default
connection default;
SET DEBUG_SYNC = 'now WAIT_FOR scanned';
INSERT INTO t1 VALUES('one');
SET DEBUG_SYNC = 'now SIGNAL insert_done';
connection con1;
reap;
disconnect con1;
connection default;
SET DEBUG_SYNC=RESET;
ALTER TABLE t1 CHANGE f eins VARCHAR(257) COLLATE latin1_german1_ci NOT NULL,
ALGORITHM=INSTANT;
SELECT * FROM t1;
DROP TABLE t1;