传递参数为in('','','') 不定数据时

Thomas -- Thanks for the question regarding "How can I do a variable "in
list"", version 8.1.5

Submitted on 2-May-2000 15:57 Central time zoneTom's latest followup |
Bookmark | BottomLast updated 15-Jul-2009 16:57

You Asked

I have a simple stored procedure, that I would like to have a passed in
string(varchar2)

for used in select from where col1 in (var1) in a stored
procedure. I've tried

everything but doesn't work. Followed is my proc.

Thanks

CREATE OR REPLACE PROCEDURE WSREVSECT_5

pSectNos varchar2,

pRetCode OUT varchar2

)

AS

nCount number;

BEGIN

SELECT count(fksrev) into nCount

FROM SREVSECT

WHERE sectno IN (pSectNos ) /* as in 'abc', 'xyz', '012' */

;

pRetCode:=to_char(ncount);

End;

and we said...

it works -- the above is the same as

where sectno = pSectNos

though, not what you want. You want it to be:

where sectno in ( 'abc', 'xyz', '012' )

NOT:

where sectno in ( '''abc'', ''xyz'', ''012''' )

which is effectively is (else you could never search on a string with
commas and quotes

and so on -- it is doing the only logical thing right now).

You can do this:

SQL> create or replace type myTableType as table

of varchar2 (255);

2 /

Type created.

ops$tkyte@dev8i> create or replace

function in_list( p_string in varchar2 ) return myTableType

2 as

3 l_string long default p_string || ',';

4 l_data myTableType := myTableType();

5 n number;

6 begin

7 loop

8 exit when l_string is null;

9 n := instr( l_string, ',' );

10 l_data.extend;

11 l_data(l_data.count) :=

ltrim( rtrim( substr( l_string, 1, n-1 ) ) );

12 l_string := substr( l_string, n+1 );

13 end loop;

14

15 return l_data;

16 end;

17 /

Function created.

ops$tkyte@dev8i> select *

2 from THE

( select cast( in_list('abc, xyz, 012') as

mytableType ) from dual ) a

3 /

COLUMN_VALUE

------------------------

abc

xyz

012

ops$tkyte@dev8i> select * from all_users where username in

2 ( select *

3 from THE ( select cast( in_list('OPS$TKYTE, SYS, SYSTEM')

as mytableType ) from dual ) )

4 /

USERNAME USER_ID CREATED

------------------------------ ---------- ---------

OPS$TKYTE 23761 02-MAY-00

SYS 0 20-APR-99

SYSTEM 5 20-APR-99