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比较Kall的两个表格
原标题:Comparing two tables in SQLite
  • 时间:2012-01-12 07:31:57
  •  标签:
  • sql
  • sqlite

我有两张桌子,想比较一下象这一样的滑坡。

table1           table2
field1           field1

a                   a
b                   d
c                   f
d                   g
e
f
g
h
i

我也希望取得这样的结果。

result_table
field1

b
c
e
h
i

How is the syntax in sqlite? Thanks

最佳回答
SELECT DISTINCT Field1
FROM Table1 
WHERE Field1 Not IN 
    (SELECT DISTINCT Field1 FROM Table2)
问题回答
SELECT columns1 FROM table1 EXCEPT SELECT columns2 FROM table2;

《欧洲防止酷刑和不人道或有辱人格的待遇或处罚公约》条款从《选举协议》的左栏声明中删除了所有各行,而该声明并非《选举协议》第二次声明的结果。 选定的栏目数目在两次选任考试时都必须相同。

这对中小型表来说是很有效的。 避免了有数百万条线的表格。

Compound Optional statement ,以及Qite SlectT声明。





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