as010101 / sql

sql

字符统计

---

USE [mtAppBBSG] GO /****** Object: UserDefinedFunction [dbo].[fn_charCount] Script Date: 2019/8/8 18:29:56 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO

ALTER FUNCTION [dbo].[fn_charCount] ( @str nvarchar(1), --要统计的字符 @oStr nvarchar(max) --字符串 ) RETURNS int AS BEGIN declare @i_start int =1 declare @i_cnt int=0 while(CHARINDEX(@str,@oStr,@i_start)!=0) begin

set @i_start=CHARINDEX(@str,@oStr,@i_start)+1
set @i_cnt=@i_cnt+1;

end

	
RETURN @i_cnt

END