# ==== Purpose ====
#
# Test verifies that there are no duplicate entries in binlog (i.e a safe
# statement which follows an unsafe statement gets logged in both row format
# and statement format resulting in duplicate entry) when binlog-format=MIXED
# and LOCK TABLES are enabled.
#
# ==== Implementation ====
#
# Steps:
#    1 - Create three tables t1,t2 and t3 with AUTO_INCREMENT on.
#    2 - Create a trigger on table t3, so that trigger execution results in
#        unsafe statement. Note query that modifies autoinc column in
#        sub-statement can make the master and slave inconsistent. Hence they
#        are logged in row format.
#    3 - Lock tables t1,t2 and t3.
#    4 - Execute an unsafe update which modifies tables t1 and t3. But since t2
#        table is also locked its table map event also gets written into the
#        binary log during the execution of update.
#    5 - Execute a safe DML operation using table 't2' and verify that master
#        doesn't report any assert.
#    6 - Ensure that slave is in sync with master and data is consistent.
#
# ==== References ====
#
# MDEV-19158: MariaDB 10.2.22 is writing duplicate entries into binary log

--source include/have_binlog_format_mixed.inc
--source include/master-slave.inc

CREATE TABLE t1 (id mediumint(8) unsigned NOT NULL AUTO_INCREMENT, someLabel varchar(30) NOT NULL, flag tinyint(1) NOT NULL DEFAULT 0, PRIMARY KEY (id)) Engine=MyISAM;
CREATE TABLE t2 (id mediumint(8) unsigned NOT NULL AUTO_INCREMENT, data varchar(30) NOT NULL, status tinyint(1) NOT NULL,   PRIMARY KEY (id)) Engine=MyISAM;
CREATE TABLE t3 (id mediumint(8) unsigned NOT NULL AUTO_INCREMENT, t1id mediumint(8) unsigned NOT NULL, flag tinyint(1) NOT NULL DEFAULT 0, status tinyint(1) NOT NULL DEFAULT 0,  PRIMARY KEY (id)) Engine=MyISAM;

INSERT INTO t1 ( id, someLabel, flag ) VALUES ( 1, 'ABC', 0 );

DELIMITER |;

CREATE OR REPLACE TRIGGER doNothing
BEFORE UPDATE ON t1
FOR EACH ROW
 BEGIN
     IF
         new.someLabel != old.someLabel
     THEN
         UPDATE t3 SET t3.flag = 0;
     END IF;
 END|

DELIMITER ;|

FLUSH LOGS;

LOCK TABLES   t1 WRITE,  t2 WRITE;
INSERT INTO t2 (data, status) VALUES ('1', 4);
UPDATE t1 SET flag = 1 WHERE id = 1;
INSERT INTO t2 (data, status) VALUES ('2', 4);
UNLOCK TABLES;

sync_slave_with_master;

let $diff_tables= master:t1, slave:t1;
--source include/diff_tables.inc
let $diff_tables= master:t2, slave:t2;
--source include/diff_tables.inc
let $diff_tables= master:t3, slave:t3;
--source include/diff_tables.inc

--connection master
DROP TABLE t1, t2, t3;

--source include/rpl_end.inc