按指定符号分割字符串代码,MSSQL代码库,德仔网

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【MSSQL】按指定符号分割字符串

作者:哲天 / 发布于2016/3/22/ 867

按指定符号分割字符串，返回分割后指定索引的第几个元素，象数组一样方便

create function Get_StrArrayStrOfIndex
(
  @str varchar(5000),  --要分割的字符串
  @split varchar(10),  --分隔符号
  @index int --取第几个元素
)
returns varchar(5000)
as
begin
  declare @location int
  declare @start int
  declare @next int
  declare @seed int

  set @str=ltrim(rtrim(@str))
  set @start=1
  set @next=1
  set @seed=len(@split)
  
  set @location=charindex(@split,@str)
  while @location<>0 and @index>@next
  begin
    set @start=@location+@seed
    set @location=charindex(@split,@str,@start)
    set @next=@next+1
  end
  if @location =0 select @location =len(@str)+1 
  return substring(@str,@start,@location-@start)
end

调用示例

--==================================
declare @str varchar(5000)
set @str='1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48'
print dbo.Get_StrArrayLength(@str,',')
declare @next int 
declare @s varchar(100) 
set @next=1
while @next<=dbo.Get_StrArrayLength(@str,',')
begin
  print dbo.Get_StrArrayStrOfIndex(@str,',',@next) ----输出数组中的值
  set @next=@next+1
end
--==================================

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