把一列数据拼接成一个字符串比较简单: declare @test varchar(500) set @test=''; select @test=@test+name+',' from person select @test 但是如果数据中有重复选项,想去掉重复的就比较绕弯了. ) set @test=''; select distinct @test=@test+name+',' from person select @test 加distinct是不行的,我在sql server 2008
with temp as( select 'China' nation ,'Guangzhou' city from dual union all select 'China' nation ,'Shanghai' city from dual union all select 'China' nation ,'Beijing' city from dual union all select 'USA' nation ,'New York' city from dual union all se
11g里面用listagg: select listagg(name,',') within (order by id) from table 10g里面用wm_concat:select wm_concat(name) from table wm_concat是undocument的listagg是11g document的
) SET @resultstr='' SELECT @resultstr=@resultstr+'|'+[BaseImage] FROM dbo.life_fc PRINT @resultstr 示例2 ),),),) SET @imgColleciton='' SELECT @citcode=BaseCityCode FROM dbo.life_fc SELECT @type= BaseTypeID FROM dbo.life_fc SELECT @imgColleciton=@imgCol
13.如何拆分含有多种分隔符的字符串 import re s = "23:41:2314\1234#sdf\23;" print(re.split(r'[#:\;]+',s)) 14.如何判断字符串a是否以字符串b开头或结尾 import os,stat #找到当前目录下的文件名称,返回list ret = os.listdir('.') print(ret) for x in ret: #endswith传参类型是tuple if x.endswith(('.py','.html'