需要幫助來建立一個SQL查詢

Question

我有一個具有以下架構的表

樣品表

email        |  name  |  address 
1@gmail.com  |  A     |  CA

我想要具有五個不同靜態電子郵件地址的同一組記錄

預期產量

email              |   name   |   address
static1@gmail.com  |   A      |   CA
static2@gmail.com  |   A      |   CA
static3@gmail.com  |   A      |   CA
static4@gmail.com  |   A      |   CA
static5@gmail.com  |   A      |   CA

這可能嗎？

Answer 1

嘗試

SELECT CONCAT('static', @n := @n + 1, '@', SUBSTRING_INDEX(email, '@', -1)) email,
       `name`,
       address
  FROM table1 CROSS JOIN  
       INFORMATION_SCHEMA.COLUMNS JOIN
       (SELECT @n := 0) n
 LIMIT 5

輸出：

|             EMAIL | NAME | ADDRESS |
--------------------------------------
| static1@gmail.com |    A |      CA |
| static2@gmail.com |    A |      CA |
| static3@gmail.com |    A |      CA |
| static4@gmail.com |    A |      CA |
| static5@gmail.com |    A |      CA |

SQLFiddle