diff options
Diffstat (limited to 'mysql-test/r/order_by.result')
| -rw-r--r-- | mysql-test/r/order_by.result | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/mysql-test/r/order_by.result b/mysql-test/r/order_by.result index 9756ab49ac7..64653de5e9c 100644 --- a/mysql-test/r/order_by.result +++ b/mysql-test/r/order_by.result @@ -854,3 +854,40 @@ b a 20 1 10 2 DROP TABLE t1; +CREATE TABLE t1 (a int, b int, PRIMARY KEY (a)); +INSERT INTO t1 VALUES (1,1), (2,2), (3,3); +explain SELECT t1.b as a, t2.b as c FROM +t1 LEFT JOIN t1 t2 ON (t1.a = t2.a AND t2.a = 2) +ORDER BY c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 ALL NULL NULL NULL NULL 3 Using temporary; Using filesort +1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 +SELECT t2.b as c FROM +t1 LEFT JOIN t1 t2 ON (t1.a = t2.a AND t2.a = 2) +ORDER BY c; +c +NULL +NULL +2 +explain SELECT t1.b as a, t2.b as c FROM +t1 JOIN t1 t2 ON (t1.a = t2.a AND t2.a = 2) +ORDER BY c; +id select_type table type possible_keys key key_len ref rows Extra +1 SIMPLE t1 const PRIMARY PRIMARY 4 const 1 +1 SIMPLE t2 const PRIMARY PRIMARY 4 const 1 +CREATE TABLE t2 LIKE t1; +INSERT INTO t2 SELECT * from t1; +CREATE TABLE t3 LIKE t1; +INSERT INTO t3 SELECT * from t1; +CREATE TABLE t4 LIKE t1; +INSERT INTO t4 SELECT * from t1; +INSERT INTO t1 values (0,0),(4,4); +SELECT t2.b FROM t1 LEFT JOIN (t2, t3 LEFT JOIN t4 ON t3.a=t4.a) +ON (t1.a=t2.a AND t1.b=t3.b) order by t2.b; +b +NULL +NULL +1 +2 +3 +DROP TABLE t1,t2,t3,t4; |