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diff --git a/mysql-test/suite/parts/inc/partition_20.inc b/mysql-test/suite/parts/inc/partition_20.inc
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+################################################################################
+# inc/partition_20.inc #
+# #
+# Purpose: #
+# Auxiliary script, only useful when sourced by #
+# suite/parts/inc/partition_check.inc. #
+# #
+# 1. Check if the preceding statement caused that the expected number of #
+# records was #
+# - inserted #
+# - updated or deleted+inserted #
+# 2. Revert the modifications #
+# #
+# The parameters #
+# @try_count = total number of inserted and updated or deleted+inserted #
+# records #
+# @clash_count = number of records where a DUPLICATE KEY appears #
+# must be set before sourcing this routine. #
+# #
+#------------------------------------------------------------------------------#
+# Original Author: mleich #
+# Original Date: 2006-03-05 #
+# Change Author: #
+# Change Date: #
+# Change: #
+################################################################################
+
+if ($no_debug)
+{
+ --disable_query_log
+}
+eval SELECT '# check unique-$num-a success: ' AS "", COUNT(*) = @clash_count AS ""
+FROM t1 WHERE f_charbig = 'was updated';
+eval SELECT '# check unique-$num-b success: ' AS "", COUNT(*) = @try_count AS ""
+FROM t1 WHERE f_charbig IN ('was updated','was inserted');
+--enable_query_log
+# Revert the modification
+DELETE FROM t1 WHERE f_charbig = 'was inserted';
+UPDATE t1 SET f_int1 = CAST(f_char1 AS SIGNED INT),
+ f_int2 = CAST(f_char1 AS SIGNED INT),
+ f_charbig = CONCAT('===',f_char1,'===')
+WHERE f_charbig = 'was updated';
+inc $num;