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+############# mysql-test\t\query_prealloc_size_func.test ######################
+# #
+# Variable Name: query_prealloc_size #
+# Scope: GLOBAL & SESSION #
+# Access Type: Dynamic #
+# Data Type: integer #
+# Default Value: 8192 #
+# Values: 8192-4294967295 #
+# #
+# #
+# Creation Date: 2008-02-22 #
+# Author: Sharique Abdullah #
+# #
+# Description: Test Cases of Dynamic System Variable "query_prealloc_size" #
+# that checks behavior of this variable in the following ways #
+# * Default Value #
+# * Valid & Invalid values #
+# * Scope & Access method #
+# * Cache behaviors #
+# #
+# Reference: #
+# http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html #
+# #
+###############################################################################
+
+
+
+--echo ** Setup **
+--echo
+#
+# Setup
+#
+
+#
+# Save initial value
+#
+
+SET @start_value = @@global.query_prealloc_size;
+
+CREATE TABLE t1 (id INT AUTO_INCREMENT PRIMARY KEY, val TEXT(200));
+
+INSERT INTO t1 VALUES(NULL,'a');
+INSERT INTO t1 VALUES(NULL,'b');
+INSERT INTO t1 VALUES(NULL,'c');
+INSERT INTO t1 VALUES(NULL,'d');
+
+SELECT * FROM t1 ORDER BY val;
+
+SET SESSION query_prealloc_size = 8192;
+
+
+--echo '#----------------------------FN_DYNVARS_137_05-----------------#'
+#
+# Session data integrity check & GLOBAL Value check
+#
+
+SET GLOBAL query_prealloc_size = 8192;
+
+connect (con_int1,localhost,root,,);
+connection con_int1;
+
+SELECT @@SESSION.query_prealloc_size;
+--echo Expected Value : 8192;
+SET SESSION query_prealloc_size = 16384;
+
+connect (con_int2,localhost,root,,);
+connection con_int2;
+
+SELECT @@SESSION.query_prealloc_size;
+--echo Expected Value : 8192;
+
+SET SESSION query_prealloc_size = 8192;
+
+connection con_int1;
+SELECT @@SESSION.query_prealloc_size;
+--echo Expected Value : 16384;
+
+connection con_int2;
+SELECT @@SESSION.query_prealloc_size;
+--echo Expected Value : 8192;
+
+SELECT @@GLOBAL.query_prealloc_size;
+--echo Expected Value : 8192;
+
+connection default;
+disconnect con_int1;
+disconnect con_int2;
+
+DROP TABLE t1;
+
+SET @@global.query_prealloc_size = @start_value;
+