# Both of the following tests check that comparison of binlog BI
# against SE record will not fail due to remains from previous values
# in the SE record (before a given field was set to null).
#
# In MIXED mode:
# - Insert and update are executed as statements
# - Delete is executed as a row event
# - Assertion: checks that comparison will not fail because the update
#              statement will clear the record contents for the nulled
#              field. If data was not cleared, some engines may keep
#              the value and return it later as garbage - despite the
#              fact that field is null. This may cause slave to
#              falsely fail in the comparison (memcmp would fail
#              because of "garbage" in record data).
#
# In ROW mode:
# - Insert, update and delete are executed as row events.
# - Assertion: checks that comparison will not fail because the update
#              rows event will clear the record contents before
#              feeding the new value to the SE. This protects against
#              SEs that do not clear record contents when storing
#              nulled fields. If the engine did not clear the data it
#              would cause slave to falsely fail in the comparison
#              (memcmp would fail because of "garbage" in record
#              data). This scenario is pretty much the same described
#              above in MIXED mode, but checks different execution
#              path in the slave.

# BUG#49481: RBR: MyISAM and bit fields may cause slave to stop on
#  delete cant find record

-- source include/rpl_reset.inc

-- connection master
-- eval CREATE TABLE t1 (c1 BIT, c2 INT) Engine=$engine
INSERT INTO `t1` VALUES ( 1, 1 );
UPDATE t1 SET c1=NULL where c2=1;
-- sync_slave_with_master

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

-- connection master
# triggers switch to row mode when on mixed 
DELETE FROM t1 WHERE c2=1 LIMIT 1;
-- sync_slave_with_master

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

-- connection master
DROP TABLE t1;
-- sync_slave_with_master

-- source include/rpl_reset.inc

-- connection master

# BUG#49482: RBR: Replication may break on deletes when MyISAM tables
#  + char field are used

-- eval CREATE TABLE t1 (c1 CHAR) Engine=$engine

INSERT INTO t1 ( c1 ) VALUES ( 'w' ) ;
SELECT * FROM t1;
UPDATE t1 SET c1=NULL WHERE c1='w';
-- sync_slave_with_master

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

-- connection master
# triggers switch to row mode when on mixed 
DELETE FROM t1 LIMIT 2;
-- sync_slave_with_master

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

-- connection master
DROP TABLE t1;
-- sync_slave_with_master