select @@global.show_compatibility_56 into @show_compatibility_56_save;

================================================================================
SHOW_COMPATIBILITY_56 = ON
================================================================================
set global show_compatibility_56 = ON;

# TEST 1
# Handling of SHOW STATUS/VARIABLES ... WHERE
#
SHOW STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW GLOBAL STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW SESSION STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW GLOBAL VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW SESSION VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

# TEST 2
# CREATE..SELECT -- Expect correct ER_WARN_DEPRECATED_SYNTAX
#
USE test;
CREATE TABLE t0 SELECT * FROM information_schema.global_status WHERE variable_name = 'COM_SELECT';
Warnings:
Warning	1287	'INFORMATION_SCHEMA.GLOBAL_STATUS' is deprecated and will be removed in a future release. Please use performance_schema.global_status instead
DROP TABLE t0;

================================================================================
SHOW_COMPATIBILITY_56 = OFF
================================================================================
set global show_compatibility_56 = OFF;

# TEST 3
# Select status and system variable tables using ORDER BY to exercise the
# rnd_pos() method
#
use performance_schema;
select * from global_variables order by variable_name;
select * from variables_by_thread order by variable_name;
select * from session_variables order by variable_name;
select * from global_status order by variable_name;
select * from session_status order by variable_name;
select * from status_by_thread order by variable_name;
select * from status_by_user order by variable_name;
select * from status_by_host order by variable_name;
select * from status_by_account order by variable_name;

# TEST 4
# Handling of SHOW STATUS/VARIABLES ... WHERE
#
SHOW STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW GLOBAL STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW SESSION STATUS WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW GLOBAL VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

SHOW SESSION VARIABLES WHERE VARIABLE_NAME LIKE "foo";
Variable_name	Value

# TEST 5
# Confirm FLUSH STATUS resets counters for all threads.
#

# Create a new connection

# Record thread id

# Increase bytes_received for new connection
USE test;
SHOW TABLES;
Tables_in_test
USE performance_schema;

# Record bytes_received for other connection
SELECT variable_value FROM status_by_thread
WHERE variable_name = "bytes_received" and thread_id = @thread_id INTO @bytes_before;

# Reset status counters
FLUSH STATUS;

# Record bytes_received after reset
SELECT variable_value FROM status_by_thread
WHERE variable_name = "bytes_received" and thread_id = @thread_id INTO @bytes_after;

# Expect bytes_before > bytes_after
SELECT @bytes_before > @bytes_after AS 'Expect 1';
Expect 1
1

# Expect bytes_after is zero
SELECT @bytes_after AS 'Expect 0';
Expect 0
0

# TEST 6
#
# Bug#28291258 FLUSH STATUS ADDS TWICE TO GLOBAL VALUES
#

# Default connection

# First connection
include/assert.inc [Global value requested from the first session must not change]

# Generate a slow query

SET long_query_time = 2;
SELECT SLEEP(4);
SLEEP(4)
0
SET long_query_time = @@global.long_query_time;

include/assert.inc [Global value requested from the first session after SLEEP() must increase by 1]
include/assert.inc [First session value must increase by 1]

# Default connection
include/assert.inc [Global value requested from the default session after DISCONNECT must remain the same]
include/assert.inc [Default session value must remain zero]

FLUSH STATUS;

include/assert.inc [Global value requested from the default session after FLUSH must remain the same]
include/assert.inc [Default session value after FLUSH must remain zero]
# CLEANUP
set @@global.show_compatibility_56 = @show_compatibility_56_save;