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结构:询问,一栏和单壳价值所订购的浏览量,首先排在该栏中具有临时价值。
原标题:SQL: query that fetches the rows ordered by the value of a column and fetches first the rows with a concret value in that column
  • 时间:2010-11-08 12:42:37
  •  标签:
  • sql

I want to do a query that fetchs the rows ordered by the value of a column and in the same time i want it fetches first the rows that has a concret value in that column.

例如:

it
es
fr
it
es
fr

如果首先要用“是”,结果将是:

es
es
it
it
fr
fr 

关于

Javi

最佳回答

我在这里想首先把记录放在一栏和之后,其余部分按赞同顺序排列(如你正在使用藐视法庭命令)。

如果是这样的话,你可以这样做(以Oracle语)。

Select *
From
(
  Select T.*, 0 orden
    From Table T
   Where column_name=  es 
   Union
  Select T.*, 1 orden
    From Table T
   Where column_name <>  es 
)
Order By orden, column_name

修改该栏的次序,只是按条款顺序排列。

EDIT:MySQL试图相反

Select *
From
(
  Select T.*, 0 orden
    From Table AS T
   Where column_name=  es 
   Union
  Select T.*, 1 orden
    From Table AS T
   Where column_name <>  es 
)
Order By orden, column_name

现在我手无我的我的我的我的我的我的我的我的我的手脚,因此我无法检验。

最佳做法

问题回答

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