Function call in where cluse

Question

Hello
i am trying to execute one statement in stored procedure.
basically i need to pass split string in where clause. it goes like this..
in put is : E,R,T.
i have written the function which will split the string into 'T','R','E'.
CREATE OR REPLACE FUNCTION FN_SPLIT_STRING(P_STR_VALUE VARCHAR2)
RETURN VARCHAR2 is
V_TEMP VARCHAR2(100);
V_VALUE VARCHAR2(100);
V_OUT VARCHAR2(100);
BEGIN
V_TEMP := P_STR_VALUE||',';
WHILE (V_TEMP IS NOT NULL)
LOOP
V_VALUE := SUBSTR(V_TEMP, 1, INSTR(V_TEMP, ',')-1);
--DBMS_OUTPUT.PUT_LINE(V_VALUE);
V_OUT := ''''||V_VALUE||''''||',' ||V_OUT;
V_TEMP := SUBSTR(V_TEMP, INSTR(V_TEMP, ',')+1);
END LOOP;
return(SUBSTR(V_OUT, 1, LENGTH(V_OUT)-1));
END FN_SPLIT_STRING;
i have to execute the below query now
select * from TABLE_X_TXN_VAR
where process_flag IN ( FN_SPLIT_STRING (E,S,T) ) and X_LAST_UPDATE_DATE < To_Date('1/22/2006','MM/DD/YYYY');
i am ideally expecting it to pass Process_flag In ('T','R','E') but it is instead comparing whole string like it is searching for process flag as "('T','R','E')" instead it should do one by one like normal In clause. i.e. first it should check for 'E' then for 'R' then for 'T'.

Answer 1

Explore these threads:
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:110612348061
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:210612357425
http://asktom.oracle.com/pls/asktom/f?p=100:11:0::::P11_QUESTION_ID:2189860818012
and you'll discover several examples.