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################################################################################
# inc/partition_trigg3.inc #
# #
# Purpose: #
# Auxiliary script, only useful when sourced by inc/partition_check.inc. #
# The trigger uses new values (--> event UPDATE, INSERT only) #
# #
# 1. Create a trigger #
# 2. Execute a statement, which activates the trigger #
# 3. Check the results of the trigger activity #
# 4. Revert the modifications #
# #
#------------------------------------------------------------------------------#
# Original Author: mleich #
# Original Date: 2006-03-05 #
# Change Author: #
# Change Date: #
# Change: #
################################################################################
delimiter |;
# Original version of the trigger
# eval CREATE TRIGGER trg_3 $event ON t1 FOR EACH ROW
# BEGIN
# SET @counter = 1;
# SET @my_max1 = 0, @my_max2 = 0;
# SELECT MAX(f_int1), MIN(f_int2) INTO @my_max1,@my_min2 FROM t1;
# SET new.f_int1 = @my_max1 + @counter,
# new.f_int2 = @my_min2 - @counter,
# new.f_charbig = '####updated per insert trigger####';
# SET @counter = @counter + 1;
# END|
#
# Bug/currently undocumented limitation:
# 17704: Triggers: MAX, Insert select with several rows, strange error
# "A trigger can not access (not even read data) the table it's defined for."
#
eval CREATE TRIGGER trg_3 $event ON t1 FOR EACH ROW
BEGIN
SET new.f_int1 = @my_max1 + @counter,
new.f_int2 = @my_min2 - @counter,
new.f_charbig = '####updated per insert trigger####';
SET @counter = @counter + 1;
END|
delimiter ;|
# Additional statements because of Bug(limitation)#17704
SET @counter = 1;
# Bug#18730 Partitions: NDB, crash on SELECT MIN(<unique column>)
SELECT MAX(f_int1), MIN(f_int2) INTO @my_max1,@my_min2 FROM t1;
# Additional statements end
eval $statement;
DROP TRIGGER trg_3;
# Check of preceding statement via Select
if ($no_debug)
{
--disable_query_log
}
# We insert records around max_row_div2 !
eval SELECT '# check trigger-$num success: ' AS "", COUNT(*) = 3 AS "" FROM t1
WHERE f_int1 = CAST(f_char1 AS SIGNED INT) + @max_row_div2 + 2
AND f_int2 = - CAST(f_char1 AS SIGNED INT) + @max_row_div2 - 1
AND f_charbig = '####updated per insert trigger####';
--enable_query_log
# Revert the changes
eval DELETE FROM t1
WHERE f_int1 <> CAST(f_char1 AS SIGNED INT)
AND f_int2 <> CAST(f_char1 AS SIGNED INT)
AND f_charbig = '####updated per insert trigger####';
inc $num;