mysql - 多个表导致单个查询

Question

我想通过单个查询从多个表中获取数据。 示例:

表-A:

|  LOT  |  ITEM  |  QTY  |
--------------------------
|  001  |  PAPER |  20   |
|  002  |  INK   |  10   |
|  003  |  PEN   |  25   |
--------------------------

表-B:

 |  LOT  |  ITEM  |  QTY  |
 --------------------------
 |  001  |  PAPER |  20   |
 |  002  |  INK   |  10   |
 |  003  |  PEN   |  25   |
 --------------------------

表-C:

|  LOT  |  ITEM  |  QTY  |
--------------------------
|  001  |  PAPER |  20   |
|  002  |  INK   |  10   |
|  003  |  PEN   |  25   |
--------------------------

当我从所有表中选择 LOT 001 时，我想要的结果是:

| TABLE NAME | LOT | ITEM | QTY |
---------------------------------
|  TABLE-A   | 001 | PAPER|  20 |
|  TABLE-B   | 001 | PAPER|  20 |
|  TABLE-C   | 001 | PAPER|  20 |
---------------------------------

感谢帮助

Answer 1

尝试这样的事情:

SELECT T.* FROM(
  SELECT 'TABLE-A' AS TABLE_NAME, LOT, ITEM, QTY FROM TABLE_A
  UNION ALL
  SELECT 'TABLE-B' AS TABLE_NAME, LOT, ITEM, QTY FROM TABLE_B
  UNION ALL
  SELECT 'TABLE-C' AS TABLE_NAME, LOT, ITEM, QTY FROM TABLE_C
) AS T 
WHERE T.LOT = '001';