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Current File : /www/server/mysql/src/mysql-test/suite/sys_vars/t/div_precision_increment_basic.test
############## mysql-test\t\div_precision_increment_basic.test #################
#                                                                              #
# Variable Name: div_precision_increment                                       #
# Scope: GLOBAL & SESSION                                                      #
# Access Type: Dynamic                                                         #
# Data Type: Numeric                                                           #
# Default Value: 4                                                             #
# Range: 0 - 30                                                                # 
#                                                                              #
#                                                                              #
# Creation Date: 2008-02-07                                                    #
# Author:  Salman Rawala                                                       #
#                                                                              #
# Description: Test Cases of Dynamic System Variable "div_precision_increment" #
#              that checks behavior of this variable in the following ways     #
#              * Default Value                                                 #
#              * Valid & Invalid values                                        #
#              * Scope & Access method                                         #
#              * Data Integrity                          .                     #
#                                                                              #
# Reference: http://dev.mysql.com/doc/refman/5.1/en/                           #
#   server-system-variables.html#option_mysqld_div_precision_increment         #
#                                                                              #
################################################################################

--source include/load_sysvars.inc

#######################################################################
#           START OF div_precision_increment TESTS                    #
#######################################################################


#############################################################
#                 Save initial value                        #
#############################################################

SET @start_global_value = @@global.div_precision_increment;
SELECT @start_global_value;
SET @start_session_value = @@session.div_precision_increment;
SELECT @start_session_value;

--echo '#--------------------FN_DYNVARS_027_01-------------------------#'
#######################################################################
#     Display the DEFAULT value of div_precision_increment            #
#######################################################################

SET @@global.div_precision_increment = 100;
SET @@global.div_precision_increment = DEFAULT;
SELECT @@global.div_precision_increment;

SET @@session.div_precision_increment = 200;
SET @@session.div_precision_increment = DEFAULT;
SELECT @@session.div_precision_increment;

--echo '#--------------------FN_DYNVARS_027_02-------------------------#'
#######################################################################
#     Check the DEFAULT value of div_precision_increment              #
#######################################################################

SET @@global.div_precision_increment = @start_global_value;
SELECT @@global.div_precision_increment = 4;

SET @@session.div_precision_increment = @start_session_value;
SELECT @@session.div_precision_increment = 4;

--echo '#--------------------FN_DYNVARS_027_03-------------------------#'
#################################################################################
# Change the value of div_precision_increment to a valid value for GLOBAL Scope #
#################################################################################

SET @@global.div_precision_increment = 1;
SELECT @@global.div_precision_increment;
SET @@global.div_precision_increment = 0;
SELECT @@global.div_precision_increment;
SET @@global.div_precision_increment = 10;
SELECT @@global.div_precision_increment;
SET @@global.div_precision_increment = 30;
SELECT @@global.div_precision_increment;


--echo '#--------------------FN_DYNVARS_027_04-------------------------#'
##################################################################################
# Change the value of div_precision_increment to a valid value for SESSION Scope #
##################################################################################

SET @@session.div_precision_increment = 1;
SELECT @@session.div_precision_increment;
SET @@session.div_precision_increment = 0;
SELECT @@session.div_precision_increment;
SET @@session.div_precision_increment = 7;
SELECT @@session.div_precision_increment;
SET @@session.div_precision_increment = 30;
SELECT @@session.div_precision_increment;


--echo '#------------------FN_DYNVARS_027_05-----------------------#'
###################################################################
# Change the value of div_precision_increment to an invalid value #
###################################################################

SET @@global.div_precision_increment = 31;
SELECT @@global.div_precision_increment;
SET @@global.div_precision_increment = -1;
SELECT @@global.div_precision_increment;
SET @@global.div_precision_increment = -1024;
SELECT @@global.div_precision_increment;
SET @@global.div_precision_increment = 65536;
SELECT @@global.div_precision_increment;
SET @@session.div_precision_increment = -1;
SELECT @@session.div_precision_increment;
SET @@session.div_precision_increment = 31;
SELECT @@session.div_precision_increment;
SET @@session.div_precision_increment = -1042;
SELECT @@session.div_precision_increment;
SET @@session.div_precision_increment = 65550;
SELECT @@session.div_precision_increment;

--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.div_precision_increment = 65530.30;
SELECT @@global.div_precision_increment;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.div_precision_increment = OFF;
SELECT @@global.div_precision_increment;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.div_precision_increment = ON;
SELECT @@session.div_precision_increment;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.div_precision_increment = 65530.30;
SELECT @@session.div_precision_increment;
SELECT @@global.div_precision_increment;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.div_precision_increment = " ";
SELECT @@global.div_precision_increment;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.div_precision_increment = " ";
SELECT @@session.div_precision_increment;



--echo '#------------------FN_DYNVARS_027_06-----------------------#'
####################################################################
#   Check if the value in GLOBAL Table matches value in variable   #
####################################################################

--disable_warnings
SELECT @@global.div_precision_increment = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='div_precision_increment';
--enable_warnings

--echo '#------------------FN_DYNVARS_027_07-----------------------#'
####################################################################
#  Check if the value in SESSION Table matches value in variable   #
####################################################################

--disable_warnings
SELECT @@session.div_precision_increment = VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='div_precision_increment';
--enable_warnings


# FN_DYNVARS_027_07 - Check if TRUE and FALSE values can be used on variable
SET @@global.div_precision_increment = TRUE;
SELECT @@global.div_precision_increment;
SET @@global.div_precision_increment = FALSE;
SELECT @@global.div_precision_increment;


--echo '#---------------------FN_DYNVARS_027_08----------------------#'
#################################################################################### 
#  Check if accessing variable with and without GLOBAL point to same variable      #
#################################################################################### 

SET @@global.div_precision_increment = 0;
SELECT @@div_precision_increment = @@global.div_precision_increment;


--echo '#---------------------FN_DYNVARS_027_09----------------------#'
########################################################################################################
#    Check if accessing variable with SESSION,LOCAL and without SCOPE points to same session variable  #
########################################################################################################

SET @@div_precision_increment = 1;
SELECT @@div_precision_increment = @@local.div_precision_increment;
SELECT @@local.div_precision_increment = @@session.div_precision_increment;


--echo '#---------------------FN_DYNVARS_027_10----------------------#'
##################################################################################  
#   Check if div_precision_increment can be accessed with and without @@ sign    #
##################################################################################

SET div_precision_increment = 1;
SELECT @@div_precision_increment;
--Error ER_PARSE_ERROR
SET local.div_precision_increment = 1;
--Error ER_UNKNOWN_TABLE
SELECT local.div_precision_increment;
--Error ER_PARSE_ERROR
SET session.div_precision_increment = 1;
--Error ER_UNKNOWN_TABLE
SELECT session.div_precision_increment;
--Error ER_BAD_FIELD_ERROR
SELECT div_precision_increment = @@session.div_precision_increment;



####################################
#     Restore initial value        #
####################################

SET @@global.div_precision_increment = @start_global_value;
SELECT @@global.div_precision_increment;
SET @@session.div_precision_increment = @start_session_value;
SELECT @@session.div_precision_increment;


#######################################################
#            END OF div_precision_increment TESTS     #
#######################################################


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