关于一个SQL自定义函数,各位高手请进!
/*
说明:该函数欲实现的功能是传入4个字符串(@find,@Field,@find1,@Field1),其中@find与@find1可能均为空,此时函数的返回值1,若@find与@find1均不为空(在传参数的时候将@find与@find1任一为空的情况排除了),则分别在@Field中查找@find,在@Field1中查找@find1,若两者均查找到且@find在@Field中出现的位置与@find1在@Field1中出现的位置相等(@Field,@Field1的格式一致,如@Field为:'87,89',@Field1为:'10,11',@Field、@Field1中用','分隔)则返回1,否则返回0,
例如
dbo.fn_fulfill('89','87,89','10','10,10') 返回1
dbo.fn_fulfill('87','87,89','10','10,10') 返回1
dbo.fn_fulfill('90','87,89','10','10,10') 返回0
dbo.fn_fulfill('89','87,89','10','10,11') 返回0
dbo.fn_fulfill('','87,89','','10,11') 返回1
dbo.fn_fulfill('87','87','10','10') 返回1
*/
Create function fn_fulfill (@find varchar(200), @Field varchar(200),@find1 varchar(200), @Field1 varchar(200))
returns int
as
begin
declare @return int
if( @find='' and @find1='')
begin
set @return=1
end
else
begin
if (PATINDEX('%'+@find+'%',@Field) = PATINDEX('%'+@find1+'%',@Field1))
set @return=1
else
begin
-- if ()
-- begin
-- end
-- else
-- set @return=0
end
end
return(@return)
end
--print dbo.fn_fulfill('89','87,89','10','10,10')
--print dbo.fn_fulfill('87','87,89','10','10,10')
小弟初学SQL,以上是小弟写的,没有写完全,望各位高手不吝赐教,谢谢~
[解决办法]
create function fn_fulfill (@find varchar(200), @Field varchar(200),@find1 varchar(200), @Field1 varchar(200)) returns int as begin declare @return int declare @pos int,@pos1 intif( @find='' and @find1='') begin set @return=1 end else begin declare @t table(pos int) declare @t1 table(pos int) select @pos=charindex(','+@find+',',','+@Field+','),@pos1=charindex(','+@find1+',',','+@Field1+',') if @pos>0 and @pos1>0 begin while @pos>0 begin insert @t select @pos select @pos=charindex(','+@find+',',','+@Field+',',@pos+1) end while @pos1>0 begin insert @t1 select @pos1 select @pos1=charindex(','+@find1+',',','+@Field1+',',@pos1+1) end if exists(select 1 from @t a,@t1 b where a.pos=b.pos) set @return=1 else set @return=0 end else set @return=0end return(@return) end
[解决办法]
create function fn_fulfill (@find varchar(200), @Field varchar(200),@find1 varchar(200), @Field1 varchar(200)) returns int as begin declare @return intdeclare @index intdeclare @index_old intset @return = 0set @index_old = 0set @index = 0if( len(@find) > 0 and len(@find1) > 0) begin while 1=1 begin set @index = charindex(@find,@field,@index) if @index = @index_old break else set @index_old = @index if charindex(@find1,@Field1,@index) > 0 begin set @return = 1 break end --if end; --while end else --if set @return = 1 return(@return) end
[解决办法]
更正：
create function fn_fulfill (@find varchar(200), @Field varchar(200),@find1 varchar(200), @Field1 varchar(200)) returns int as begin declare @return intdeclare @index intdeclare @index_old intset @return = 0set @index_old = 0set @index = 0if( len(@find) > 0 and len(@find1) > 0) begin while 1=1 begin set @index = charindex(@find,@field,@index) if @index = @index_old break else set @index_old = @index if charindex(@find1,@Field1,@index) = @index --更正: > 0 begin set @return = 1 break end --if end; --while end else --if set @return = 1 return(@return) end
[解决办法]
Create function fn_fulfill (@find varchar(200), @Field varchar(200),@find1 varchar(200), @Field1 varchar(200)) returns int as begin declare @return intset @return=0if(@find='' and @find1='') begin set @return=1 end else begin if ( @find<>'' and @find1<>'' and charINDEX(@find,@Field) = charINDEX(@find1,@Field1)) set @return=1 else begin set @return=0 end end return(@return) end
[解决办法]
Create function fn_fulfill (@find varchar(200), @Field varchar(200),@find1 varchar(200), @Field1 varchar(200)) returns int as begin declare @return int set @return = 0if( @find='' and @find1='') begin set @return=1 end else begin if (charindex(','+@find+',',@Field+',') = (charindex(','+@find1+',',@Field1+',') set @return=1 end return(@return) end
[解决办法]
create function fn_fulfill (@find varchar(200), @Field varchar(200),@find1 varchar(200), @Field1 varchar(200)) returns int as begin declare @ret int if @find='' and @find1='' begin set @ret=1 end else if @find is not null and @find1 is not null begin declare @f int,@f1 int select @f=charindex(','+convert(varchar(100),@find)+',',','+convert(varchar(10),@Field)+',') select @f1=charindex(','+convert(varchar(100),@find1)+',',','+convert(varchar(10),@Field1)+',') if @f=@f1 and @f<>0 begin set @ret=1 end else begin set @ret=0 end endreturn(@ret)end