** Setup **

SET @old_big_tables = @@SESSION.sql_big_tables;
CREATE TABLE t1(a varchar(20), b varchar(20));
INSERT INTO t1 VALUES('aa','bb');
INSERT INTO t1 VALUES('aa','bb');
INSERT INTO t1 VALUES('aa','bb');
INSERT INTO t1 VALUES('aa','bb');
INSERT INTO t1 VALUES('aa','bb');
'#--------------------FN_DYNVARS_155_01-------------------------#'
SET SESSION sql_big_tables = 1;
SET @diskTableCount = 0;
SET @tempTableCount = 0;
SELECT * FROM (SELECT ta.a as a, tb.b as b 
FROM t1 as ta INNER JOIN t1 as tb ON ta.a = tb.a) sub;
a	b
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
aa	bb
SET @diskTableCount = 1 - @diskTableCount;
SET @tempTableCount = 1 - @tempTableCount;
SELECT @diskTableCount;
@diskTableCount
1
1 Expected
SELECT @tempTableCount;
@tempTableCount
1
1 Expected
'#--------------------FN_DYNVARS_155_02-------------------------#'
SET SESSION sql_big_tables = 0;
SET @diskTableCount = 1;
SET @tempTableCount = 1;
SELECT * FROM (SELECT ta.b as a, tb.a as b FROM t1 as ta INNER JOIN t1 as tb ON ta.a = tb.a) sub;
a	b
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
bb	aa
SET @diskTableCount = 1 - @diskTableCount;
SET @tempTableCount = 2 - @tempTableCount;
SELECT @diskTableCount;
@diskTableCount
0
0 Expected
SELECT @tempTableCount;
@tempTableCount
1
1 Expected
'#--------------------FN_DYNVARS_155_03-------------------------#'
** Connecting con_int1 using root **
** Connection con_int1 **
SELECT @@SESSION.sql_big_tables;
@@SESSION.sql_big_tables
0
0 / FALSE Expected;
SET SESSION sql_big_tables = FALSE;
** Connecting con_int2 using root **
** Connection con_int2 **
SELECT @@SESSION.sql_big_tables;
@@SESSION.sql_big_tables
0
0 / FALSE Expected;
SET SESSION sql_big_tables = TRUE;
** Connection con_int1 **
SELECT @@SESSION.sql_big_tables;
@@SESSION.sql_big_tables
0
0 / FALSE Expected;
** Connection con_int2 **
SELECT @@SESSION.sql_big_tables;
@@SESSION.sql_big_tables
1
1 / TRUE Expected;
** Connection default **
Disconnecting Connections con_int1, con_int2
SET SESSION sql_big_tables = @old_big_tables;
DROP TABLE t1;