Oracle “IN clause” from parameter

问题

I'm very unfamiliar with Oracle and am just trying to get this to work. I've looked here and here but have no idea how to make it all work. Here's what I need. I need a proc that will accept a comma-delimited string as a parameter that I can use in the "IN clause" of the query and return a cursor result. Is ther a way to do this in one, all-inclusive proc? If not, what are the different steps I need to take? Again, I apologize for my lack of knowledge of Oracle, this is just trying to get something to work real quick.

Thanks

Here's the proc (p_Scope would be the comma-delimited input):

create or replace PROCEDURE CU_SELECTION_ID
(
p_Scope IN varchar2,
p_ResultSet OUT SYS_REFCURSOR
)
is
BEGIN
OPEN p_ResultSet FOR
select
b.addr1,
b.addr2,
b.city,
b.country_code,
a.customer_no,
b.des1,
a.entity,
b.main_phone_no,
b.phone_area_code,
b.status,
b.wb_site_url,
b.zip
from
ar_customer a,
ct_addr b
where b.main_loc_flag = 'Y' and
a.customer_no = b.customer_no and
a.entity = b.cust_entity and
b.stk_loc_no = '3' and 
b.customer_no in (p_Scope);
END;

回答1:

I believe there is a 'better way', but I'm not sure what it is right now...

This should work for you though:

replace:

b.customer_no in (p_Scope);

with

instr(p_Scope, ','||b.customer_no||',' ) > 0

This will search p_Scope and return a value of > 0 if b.customer_no appears in the list.

Make sure that the first and last character in the list is a comma (',')

(also, as a new comer to Oracle I found Tech Republic to be a very helpful quick resource.)

回答2:

Assuming declaration

create or replace type cvarchar2 as table of varchar2(4000);

the query

select * from some_table t where some_column in 
('FOO','BAR')

gives same result as

select * from some_table t where some_column in 
(select column_value from table(cvarchar2('FOO','BAR')))

You can use second one and pass PLSQL collection into table function. I do it this way from Java where ...table(?) perfectly works. Explain plan seems not too bad in comparison with traditional IN clause.

Solutions based on text search with delimiters may be performance killer.

回答3:

For the record, here's another ugly way to do it.

   PROCEDURE getreport (
      p_affiliates           IN       varchar2,
      p_StartDate            IN       date,
      p_EndDate              IN       date,
      p_ReturnValue         OUT       sys_refcursor
   ) IS
   BEGIN

        DECLARE
           sql_stmt          VARCHAR2(4000);
        BEGIN

          sql_stmt := 'SELECT
            FIRSTNAME,
            LASTNAME,
            ADDRESSLINE,
            SUITE,
            CITY,
            STATE,
            ZIP
        FROM 
            ORDERHEADER head
            INNER JOIN ORDERDETAIL detail 
                on head.ORDERTRACKINGLOGID = detail.ORDERTRACKINGLOGID
            INNER JOIN ORDERTRACKINGDETAIL trackdetail
                on detail.ORDERDETAILID = trackdetail.ORDERDETAILID 
                    AND head.ORDERHEADERID = trackdetail.ORDERHEADERID
            INNER JOIN AFFILIATE aff
                on trackdetail.AFFILIATEID = aff.AFFILIATEID
        WHERE
            aff.AFFILIATEID IN
            (
                select 
                    AFFILIATEID
                from 
                    AFFILIATE
                where
                    AFFILIATEID IN (' || p_affiliates || ')
            )
            AND
            head.CALENDAR_DATE >= TO_DATE( :p_StartDate )
            AND
            head.CALENDAR_DATE <= TO_DATE( :p_EndDate )    
        ORDER BY AFFILIATEID,
                AFFILIATENAME    
    ';

        OPEN p_ReturnValue for sql_stmt USING p_StartDate, p_EndDate;

        END;

    END getreport;

回答4:

You can use it this way:

 SELECT * FROM MATABLE 
 WHERE MT_ID 
    IN (SELECT REGEXP_SUBSTR(MYPARAM,'[^,]+', 1, LEVEL) 
        FROM DUAL 
        CONNECT BY REGEXP_SUBSTR(MYPARAM, '[^,]+', 1, LEVEL) IS NOT NULL))

MYPARAM- '368134,181956'

来源：https://stackoverflow.com/questions/6629433/oracle-in-clause-from-parameter

标签

Oracle

parameters

in-clause