Union constant value : Union « Select Clause « SQL / MySQL






  1. SQL / MySQL
  2. Select Clause
  3. Union

Union constant value

   
mysql>
mysql> SELECT   POWER(DIGIT,2)
    -> FROM    (SELECT 0 AS DIGIT UNION SELECT 1 UNION
    ->          SELECT 2 UNION SELECT 3 UNION
    ->          SELECT 4 UNION SELECT 5 UNION
    ->          SELECT 6 UNION SELECT 7 UNION
    ->          SELECT 8 UNION SELECT 9) AS DIGITS1
    -> UNION ALL
    -> SELECT   POWER(DIGIT,3)
    -> FROM    (SELECT 0 AS DIGIT UNION SELECT 1 UNION
    ->          SELECT 2 UNION SELECT 3 UNION
    ->          SELECT 4 UNION SELECT 5 UNION
    ->          SELECT 6 UNION SELECT 7 UNION
    ->          SELECT 8 UNION SELECT 9) AS DIGITS2
    -> ORDER BY 1;
+----------------+
| POWER(DIGIT,2) |
+----------------+
|              0 |
|              0 |
|              1 |
|              1 |
|              4 |
|              8 |
|              9 |
|             16 |
|             25 |
|             27 |
|             36 |
|             49 |
|             64 |
|             64 |
|             81 |
|            125 |
|            216 |
|            343 |
|            512 |
|            729 |
+----------------+
20 rows in set (0.00 sec)








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