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SQL行列转换算法1

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Jun 07, 2016 pm 02:54 PM

sqlalgorithmstatementConvert

请用一个sql语句得出结果
从table1,table2中取出如table3所列格式数据，注意提供的数据及结果不准确，只是作为一个格式向大家请教。
如使用存储过程也可以。

table1

月份mon 部门dep 业绩yj
-------------------------------
一月份      01      10
一月份      02      10
一月份      03      5
二月份      02      8
二月份      04      9
三月份      03      8

table2

部门dep      部门名称dname
--------------------------------
      01      国内业务一部
      02      国内业务二部
      03      国内业务三部
      04      国际业务部

table3 （result）

部门dep     一月份      二月份      三月份
--------------------------------------
      01      10       null          null
      02      10           8             null
      03      5             null          8
      04      null          9             null

------------------------------------------

select dname,b.yj '一月份',c.yj '二月份',d.yj '三月份' from table2 a left join table1 b on a.dep=b.dep and b.mon='一月份' left join table1 c on a.dep = c.dep and c.mon='二月份' left join table1 d on a.dep = d.dep and d.mon='三月份'

Statement

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