SQL服务器：选择多列

Question

我有这个疑问：

SELECT * 
FROM tbl_feedback 
ORDER BY id DESC 

我只想选择其中列“状态”处于串/ VARCHAR“完成”和列“类型”是“错误”。

Answer 1

非常简单

SELECT 
* 
FROM tbl_feedback 
WHERE 
    [status] = 'done' 
    AND [type] = 'bug' 
ORDER BY id DESC 

Answer 2

只是一个快速的猜测 - 了解更多详情，请提供表模式和一些演示数据。

SELECT * FROM tbl_feedback WHERE [status] = 'done' AND [type] = 'bug' ORDER BY id DESC 

Answer 3

这很简单，你需要在where子句中添加条件。

SELECT * 
FROM tbl_feedback 
WHERE status = 'done' and type= 'bug' 
ORDER BY id DESC 

这里是SQL FIDDLE与

玩你也可以使用列名滤除只选择所需列

SELECT status, type 
FROM tbl_feedback 
WHERE status = 'done' and type= 'bug' 
ORDER BY id DESC