############## mysql-test\t\collation_connection_func.test  ###################
#                                                                             #
# Variable Name: collation_connection                                         #
# Scope: GLOBAL | SESSION                                                     #
# Access Type: Dynamic                                                        #
# Data Type: string                                                           #
# Default Value:                                                              #
# Range:                                                                      #
#                                                                             #
#                                                                             #
# Creation Date: 2008-03-08                                                   #
# Author:  Rizwan                                                             #
#                                                                             #
# Description: Test Cases of Dynamic System Variable collation_connection     #
#              that checks the behavior of this variable                      #
#                                                                             #
# Reference: http://dev.mysql.com/doc/refman/5.1/en/                          #
#  server-system-variables.html                                               #
#                                                                             #
###############################################################################

--echo '#--------------------FN_DYNVARS_015_01-------------------------#'
######################################################################
# Check if setting collation_connection is changed in new connection # 
######################################################################
SET @global_collation_connection = @@global.collation_connection;
SET @session_collation_connection = @@session.collation_connection;

SET @@global.collation_connection = latin1_danish_ci;
--echo 'connect (con1,localhost,root,,,,)'
connect (con1,localhost,root,,,,);
--echo 'connection con1'
connection con1;
SELECT @@global.collation_connection;
SELECT @@session.collation_connection;
disconnect con1;

--echo '#--------------------FN_DYNVARS_015_02-------------------------#'
###########################################################
# Begin the functionality Testing of collation_connection #
###########################################################

--echo 'connection default'
connection default;

--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings

#==============================================================================
--echo '----check if collation_connection update character_set_connection---'
#==============================================================================

SET @@session.collation_connection = utf8_spanish_ci;
SELECT @@collation_connection, @@character_set_database;

#==============================================================================
--echo '---check if collation_connection works for literal string comparision--'
#==============================================================================
SET @@session.collation_connection = latin1_swedish_ci;
SELECT 'mysql'='MySql';
SELECT _latin2'mysql' COLLATE latin2_general_ci='MySql';
SELECT _utf8'mysql'=_utf8'MySql' COLLATE utf8_unicode_ci;

SET @@session.collation_connection = latin1_general_cs;
SELECT 'mysql'='MySql';
SELECT _latin2'mysql'COLLATE latin2_general_ci='MySql';
--Error ER_CANT_AGGREGATE_2COLLATIONS
SELECT _utf8'mysql'COLLATE utf8_danish_ci=_utf8'MySql'COLLATE utf8_unicode_ci;

#==============================================================================
--echo '---collation_connection does not effect comparision with column---'
#==============================================================================
# fill table with some test data
CREATE TABLE t1(a CHAR(20)CHARACTER SET latin1 COLLATE latin1_german2_ci);
INSERT INTO t1 VALUES('Müller');


SET @@session.collation_connection = latin2_hungarian_ci;
SELECT * FROM t1 WHERE a='Müller';

SET @@session.collation_connection = latin1_general_cs;
SELECT * FROM t1 WHERE a='müller';

--echo 'check if string literal collation is used';
SELECT * FROM t1 WHERE a='müller' COLLATE latin1_general_cs;
SELECT * FROM t1 WHERE a='müller' COLLATE latin1_german1_ci;

# clean up
DROP TABLE t1;
SET @@global.collation_connection = @global_collation_connection;
SET @@session.collation_connection = @session_collation_connection;
#########################################################
# End of functionality Testing for collation_connection #
#########################################################
