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--source include/have_innodb.inc
SET @start_global_value = @@global.innodb_tmpdir;
SELECT @start_global_value;
#
# exists as global and session
#
select @@session.innodb_tmpdir;
show global variables like 'innodb_tmpdir';
show session variables like 'innodb_tmpdir';
select * from information_schema.global_variables where variable_name='innodb_tmpdir';
select * from information_schema.session_variables where variable_name='innodb_tmpdir';
#
# Show that it is writable
#
set global innodb_tmpdir=@@global.tmpdir;
set session innodb_tmpdir=@@global.tmpdir;
#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_tmpdir=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_tmpdir=1e1;
#
# path len more than 512
#
--error ER_WRONG_VALUE_FOR_VAR
set global innodb_tmpdir=repeat('a',1000);
show warnings;
#
# Cleanup
#
SET @@global.innodb_tmpdir = @start_global_value;
SELECT @@global.innodb_tmpdir;