Select from the result of subquery : Sub query « Select Clause « SQL / MySQL






  1. SQL / MySQL
  2. Select Clause
  3. Sub query

Select from the result of subquery

       
mysql>
mysql>
mysql> CREATE   TABLE TEAMS
    ->         (TEAMNO         INTEGER      NOT NULL,
    ->          EmployeeNO       INTEGER      NOT NULL,
    ->          DIVISION       CHAR(6)      NOT NULL,
    ->          PRIMARY KEY    (TEAMNO)             );
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql>
mysql> INSERT INTO TEAMS VALUES (1,  6, 'first');
Query OK, 1 row affected (0.00 sec)

mysql> INSERT INTO TEAMS VALUES (2, 27, 'second');
Query OK, 1 row affected (0.00 sec)

mysql>
mysql> SELECT  (SELECT   DIVISION
    ->          FROM     TEAMS
    ->          WHERE    TEAMNO = 1),
    ->         (SELECT   DIVISION
    ->          FROM     TEAMS
    ->          WHERE    TEAMNO = 2);
+--------------------------------------------------------------------------+--------------------------------------------------------------------------+
| (SELECT   DIVISION
         FROM     TEAMS
         WHERE    TEAMNO = 1) | (SELECT   DIVISION
         FROM     TEAMS
         WHERE    TEAMNO = 2) |
+--------------------------------------------------------------------------+--------------------------------------------------------------------------+
| first                                                                    | second                                                                   |
+--------------------------------------------------------------------------+--------------------------------------------------------------------------+
1 row in set (0.00 sec)

mysql>
mysql>
mysql> drop table teams;
Query OK, 0 rows affected (0.00 sec)








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