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e5ae4e2392
set but is ignored".
This patch makes @@session.max_allowed_packed and
@@session.net_buffer_length read-only as suggested in the bug
report. The user will have to use SET GLOBAL (and reconnect)
to alter the session values of these variables.
The error string ER_VARIABLE_IS_READONLY is introduced.
Tests are modified accordingly.
sql/set_var.cc:
The class sys_var_thd_ulong_session_readonly is introduced as
a specialization of sys_var_thd_ulong implementing a read-only
session variable. The class overrides check() and
check_default() to achieve the read-only property for the
session part of the variable.
sql/set_var.h:
The class sys_var_thd_ulong_session_readonly is introduced as
a specialization of sys_var_thd_ulong implementing a read-only
session variable. The class overrides check() and
check_default() to achieve the read-only property for the
session part of the variable.
sql/share/errmsg.txt:
New error ER_VARIABLE_IS_READONLY.
132 lines
4.8 KiB
Text
132 lines
4.8 KiB
Text
SET @start_global_value = @@global.net_buffer_length;
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SET @@global.net_buffer_length = DEFAULT;
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'#--------------------FN_DYNVARS_109_01-------------------------#'
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SET @@global.net_buffer_length = 10000;
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SET @@global.net_buffer_length = DEFAULT;
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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16384
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SET @@session.net_buffer_length = 20000;
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ERROR HY000: SESSION variable 'net_buffer_length' is read-only. Use SET GLOBAL to assign the value
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SET @@session.net_buffer_length = DEFAULT;
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ERROR 42000: Variable 'net_buffer_length' doesn't have a default value
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SELECT @@session.net_buffer_length;
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@@session.net_buffer_length
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16384
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'#--------------------FN_DYNVARS_109_02-------------------------#'
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SET @@global.net_buffer_length = DEFAULT;
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SELECT @@global.net_buffer_length = 16384;
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@@global.net_buffer_length = 16384
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1
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'#--------------------FN_DYNVARS_109_03-------------------------#'
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SET @@global.net_buffer_length = 1024;
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1024
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SET @@global.net_buffer_length = 1025;
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1024
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SET @@global.net_buffer_length = 1048576;
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1048576
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SET @@global.net_buffer_length = 1048575;
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1047552
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SET @@global.net_buffer_length = 65535;
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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64512
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'Bug# 34877: Invalid Values are coming in variable on assigning valid values';
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'#--------------------FN_DYNVARS_109_04-------------------------#'
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'#------------------FN_DYNVARS_109_05-----------------------#'
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SET @@global.net_buffer_length = 0;
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Warnings:
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Warning 1292 Truncated incorrect net_buffer_length value: '0'
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1024
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SET @@global.net_buffer_length = -1024;
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Warnings:
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Warning 1292 Truncated incorrect net_buffer_length value: '0'
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1024
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SET @@global.net_buffer_length = 1023;
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Warnings:
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Warning 1292 Truncated incorrect net_buffer_length value: '1023'
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1024
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SET @@global.net_buffer_length = 1048577;
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Warnings:
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Warning 1292 Truncated incorrect net_buffer_length value: '1048577'
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1048576
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SET @@global.net_buffer_length = 104857633;
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Warnings:
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Warning 1292 Truncated incorrect net_buffer_length value: '104857633'
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1048576
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SET @@global.net_buffer_length = 65530.34.;
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ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.' at line 1
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1048576
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SET @@global.net_buffer_length = test;
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ERROR 42000: Incorrect argument type to variable 'net_buffer_length'
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1048576
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'Bug # 34837: Errors are not coming on assigning invalid values to variable';
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SET @@session.net_buffer_length = test;
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ERROR 42000: Incorrect argument type to variable 'net_buffer_length'
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SELECT @@session.net_buffer_length;
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@@session.net_buffer_length
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16384
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'#------------------FN_DYNVARS_109_06-----------------------#'
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SELECT @@global.net_buffer_length = VARIABLE_VALUE
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FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
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WHERE VARIABLE_NAME='net_buffer_length';
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@@global.net_buffer_length = VARIABLE_VALUE
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1
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'#------------------FN_DYNVARS_109_07-----------------------#'
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SELECT @@session.net_buffer_length = VARIABLE_VALUE
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FROM INFORMATION_SCHEMA.SESSION_VARIABLES
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WHERE VARIABLE_NAME='net_buffer_length';
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@@session.net_buffer_length = VARIABLE_VALUE
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1
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'#------------------FN_DYNVARS_109_08-----------------------#'
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SET @@global.net_buffer_length = TRUE;
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Warnings:
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Warning 1292 Truncated incorrect net_buffer_length value: '1'
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1024
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SET @@global.net_buffer_length = FALSE;
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Warnings:
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Warning 1292 Truncated incorrect net_buffer_length value: '0'
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SELECT @@global.net_buffer_length;
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@@global.net_buffer_length
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1024
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'#---------------------FN_DYNVARS_109_09----------------------#'
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SET @@global.net_buffer_length = 2048;
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SELECT @@net_buffer_length = @@global.net_buffer_length;
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@@net_buffer_length = @@global.net_buffer_length
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0
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'#---------------------FN_DYNVARS_109_10----------------------#'
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'#---------------------FN_DYNVARS_109_11----------------------#'
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SELECT @@net_buffer_length;
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@@net_buffer_length
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16384
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SELECT local.net_buffer_length;
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ERROR 42S02: Unknown table 'local' in field list
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SELECT session.net_buffer_length;
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ERROR 42S02: Unknown table 'session' in field list
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SELECT net_buffer_length = @@session.net_buffer_length;
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ERROR 42S22: Unknown column 'net_buffer_length' in 'field list'
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SET @@global.net_buffer_length = @start_global_value;
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