2012-11-27 90 views
2

我有一張桌子,我想用一個特定的值填充一列。在PostgreSQL中填充具有特定值的表的所有列?

樣品表: 它包括溫度欄是空的,我想用4.56填充相關欄的所有行。

 
+------------+------------------+ 
|temperature |dt    | 
+------------+------------------+ 
|   |9/15/2007 12:12:12|     
|   |9/15/2007 12:14:16| 
|   |9/15/2007 12:16:02| 
|   |9/15/2007 12:18:23| 
|   |9/15/2007 12:21:01| 
+------------+------------------+ 

結果:

 
+------------+------------------+ 
|temperature |dt    | 
+------------+------------------+ 
| 4.56  |9/15/2007 12:12:12|     
| 4.56  |9/15/2007 12:14:16| 
| 4.56  |9/15/2007 12:16:02| 
| 4.56  |9/15/2007 12:18:23| 
| 4.56  |9/15/2007 12:21:01| 
+------------+------------------+ 

回答

4
update the_table 
    set temperature = 4.56; 
commit; 
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