Merge gleb.loc:/home/uchum/work/bk/5.0-opt-27352 (58f697f5) · Commits · Software / OSDI20 Artifacts / mariadb

mysql-test/r/select.result

+10 −0

Original line number	Diff line number	Diff line
		@@ -3995,4 +3995,14 @@ id select_type table type possible_keys key key_len ref rows Extra
		1 SIMPLE f1 index inx inx 10 NULL 7 Using where; Using index
		1 SIMPLE f2 ref inx inx 5 test.f1.b 1 Using where; Using index
		DROP TABLE t1;
		CREATE TABLE t1 (c1 INT, c2 INT);
		INSERT INTO t1 VALUES (1,11), (2,22), (2,22);
		EXPLAIN SELECT c1 FROM t1 WHERE (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT COUNT(c2)))))))))))))))))))))))))))))))) > 0;
		id select_type table type possible_keys key key_len ref rows Extra
		1 PRIMARY t1 ALL NULL NULL NULL NULL 3 Using where
		31 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used
		32 DEPENDENT SUBQUERY NULL NULL NULL NULL NULL NULL NULL No tables used
		EXPLAIN SELECT c1 FROM t1 WHERE (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT (SELECT COUNT(c2))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))) > 0;
		ERROR HY000: Too high level of nesting for select
		DROP TABLE t1;
		End of 5.0 tests

mysql-test/t/select.test

+30 −0

Original line number	Diff line number	Diff line
		@@ -3370,4 +3370,34 @@ EXPLAIN SELECT COUNT(*) FROM t1 f1 INNER JOIN t1 f2
		WHERE 1 AND f1.b NOT IN (100,2232,3343,51111);
		DROP TABLE t1;

		#
		# Bug #27352: Incorrect result of nested selects instead of error reporting
		#

		CREATE TABLE t1 (c1 INT, c2 INT);
		INSERT INTO t1 VALUES (1,11), (2,22), (2,22);

		let $n= 31;
		let $q= COUNT(c2);
		while ($n)
		{
		let $q= (SELECT $q);
		dec $n;
		}
		--disable_warnings
		eval EXPLAIN SELECT c1 FROM t1 WHERE $q > 0;
		--enable_warnings

		let $n= 64;
		let $q= COUNT(c2);
		while ($n)
		{
		let $q= (SELECT $q);
		dec $n;
		}
		--error ER_TOO_HIGH_LEVEL_OF_NESTING_FOR_SELECT
		eval EXPLAIN SELECT c1 FROM t1 WHERE $q > 0;

		DROP TABLE t1;

		--echo End of 5.0 tests

sql/share/errmsg.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -5635,3 +5635,5 @@ ER_NON_INSERTABLE_TABLE
		eng "The target table %-.100s of the %s is not insertable-into"
		ER_ADMIN_WRONG_MRG_TABLE
		eng "Table '%-.64s' is differently defined or of non-MyISAM type or doesn't exist"
		ER_TOO_HIGH_LEVEL_OF_NESTING_FOR_SELECT
		eng "Too high level of nesting for select"

sql/sql_parse.cc

+5 −0

Original line number	Diff line number	Diff line
		@@ -5891,6 +5891,11 @@ mysql_new_select(LEX *lex, bool move_down)
		select_lex->init_query();
		select_lex->init_select();
		lex->nest_level++;
		if (lex->nest_level > (int) MAX_SELECT_NESTING)
		{
		my_error(ER_TOO_HIGH_LEVEL_OF_NESTING_FOR_SELECT,MYF(0),MAX_SELECT_NESTING);
		DBUG_RETURN(1);
		}
		select_lex->nest_level= lex->nest_level;
		/*
		Don't evaluate this subquery during statement prepare even if

sql/unireg.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -81,6 +81,8 @@
		RAND_TABLE_BIT)
		#define MAX_FIELDS 4096 /* Limit in the .frm file */

		#define MAX_SELECT_NESTING (sizeof(nesting_map)*8-1)

		#define MAX_SORT_MEMORY (2048*1024-MALLOC_OVERHEAD)
		#define MIN_SORT_MEMORY (32*1024-MALLOC_OVERHEAD)