SqlServer

1.多条数据使用逗号隔开

select invoiceApplyNo,stuff((select distinct ','+incomePlanNo from T1 where a.invoiceApplyNo=invoiceApplyNo for xml path('')),1,1,'') AS items
from T1 a group by invoiceApplyNo

 

 

2.批量更新多条语句

方法一

update a set HIGH=b.NEW  from SPEC1 a,tmpDOT  b 
where a.high=b.old

方法二

UPDATE A
SET HIGH=B.NEW
FROM A LEFT JOIN B ON (A.HIGH=B.OLD)

方法三

update  a
  set high  = (select new from tmpdot where old=a.high  )
   from spec1 a

 

3.存储IN查询处理：

-- =============================================
-- 名称：字符串分隔成表
-- 维护：ifu25
-- 日期：2018/08/14
-- 说明：用于将相似'1,2,3,4,5,6'的字符串分解成多行，以便于在存储过程当中使用 where id in(select * from StrSplitToTable(@Strs,',') )
-- =============================================
CREATE function func_StrSplitToTable
(
  @Strs varchar(max),   --须要被分隔的字符串
  @Split varchar(50)    --分隔符
)
returns @Temp table (id varchar(50) null)
as

begin
  while (charindex(@Split, @Strs)<>0)
  begin
    insert @Temp(id) values (substring(@Strs, 1, charindex(@Split, @Strs)-1))
    set @Strs=stuff(@Strs, 1, charindex(@Split, @Strs), '')
  end
  insert @Temp(id) values (@Strs)
  return
end

调用示例：

SELECT * FROM table_temp id in (SELECT * FROM func_StrSplitToTable(@idStr,','));