我想加入这两个具有相同列名的表,以获得最终结果,如下所示。我怎么能这样做?
表1,(主要: - 关键日期)
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| date | value |
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| 2015-05-16 03:21:46 | 2 |
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表2,(主要: - 关键日期)
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| date | value |
-------------------------------
| 2015-05-16 03:21:46 | 3 |
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期待最终结果
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| date | value(table1) | value(table2) |
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| 2015-05-16 03:21:46 | 2 | 3 |
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答案 0 :(得分:3)
只需在填写列时添加表名:
SELECT date, table1.value as value1, table2.value as value2
FROM table1
JOIN table2 USING (date)
这会给你这个结果:
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| date | value1 | value2 |
-----------------------------------------
| 2015-05-16 03:21:46 | 2 | 3 |
-----------------------------------------
答案 1 :(得分:-1)
SELECT t1.date, t1.value as value1, t2.value as value2
FROM table1 t1
JOIN table2 t2 ON t1.date = t2.date