#
# Test that mysqld does not crash when running ANALYZE TABLE with
# different values of the parameter innodb_stats_sample_pages.
#

-- source include/have_innodb_plugin.inc

# we care only that the following SQL commands do not produce errors
# and do not crash the server
-- disable_query_log
-- disable_result_log
-- enable_warnings

let $sample_pages=`select @@innodb_stats_sample_pages`;
SET GLOBAL innodb_stats_sample_pages=0;

# check that the value has been adjusted to 1
-- enable_result_log
SHOW VARIABLES LIKE 'innodb_stats_sample_pages';
-- disable_result_log

CREATE TABLE innodb_analyze (
	a INT,
	b INT,
	KEY(a),
	KEY(b,a)
) ENGINE=InnoDB;

# test with empty table

ANALYZE TABLE innodb_analyze;

SET GLOBAL innodb_stats_sample_pages=2;
ANALYZE TABLE innodb_analyze;

SET GLOBAL innodb_stats_sample_pages=4;
ANALYZE TABLE innodb_analyze;

SET GLOBAL innodb_stats_sample_pages=8;
ANALYZE TABLE innodb_analyze;

SET GLOBAL innodb_stats_sample_pages=16;
ANALYZE TABLE innodb_analyze;

INSERT INTO innodb_analyze VALUES
(1,1), (1,1), (1,2), (1,3), (1,4), (1,5),
(8,1), (8,8), (8,2), (7,1), (1,4), (3,5);

SET GLOBAL innodb_stats_sample_pages=1;
ANALYZE TABLE innodb_analyze;

SET GLOBAL innodb_stats_sample_pages=2;
ANALYZE TABLE innodb_analyze;

SET GLOBAL innodb_stats_sample_pages=4;
ANALYZE TABLE innodb_analyze;

SET GLOBAL innodb_stats_sample_pages=8;
ANALYZE TABLE innodb_analyze;

SET GLOBAL innodb_stats_sample_pages=16;
ANALYZE TABLE innodb_analyze;

DROP TABLE innodb_analyze;
EVAL SET GLOBAL innodb_stats_sample_pages=$sample_pages;