SQL report for LIKE SEARCH

Question

hello all ,
The below SQL seems to running fine in the SQL developer but acts different in APEX.
I have 2 select lists
1, :P40_C
2, :P40_CONTRACTOR
When I do not enter any value for the above select list, I do not return any records . I would like to get all the records when both the fields are left empty.
SELECT VS.LNAME||', '||VS.FNAME as "NAME",
VS.TEAM as "TEAM", VS.C_NO as "C_NO", VS.HOURLY_RATE as "HOURLY_RATE",
VS.WEEK_ENDING as "WEEK_ENDING",VS.PIN, sum(VS.TOTAL) as "TOTAL",
(sum(VS.TOTAL) * VS.HOURLY_RATE) "TOTAL_COST"
from VS
where
( instr(upper(VS.C_NO), upper(nvl(:P40_C,upper(VS.C_NO)))) > 0
AND_
instr(upper(VS.AD_ID), upper(nvl(:P40_CONTRACTOR,upper(VS.AD_ID)))) > 0 )
group by
VS.LNAME||', '||VS.FNAME, VS.FIRM, VS.MANAGER_NAME, VS.TEAM,
VS.C_NO, VS.POSITION_NO, VS.HOURLY_RATE,VS.WEEK_ENDING,VS.PIN,VS.PIN_DESCRIPTION
Any help in this regard will be highly appriciated.

Answer 1

Andy ,
Thank you.
Now I am getting ORA-00904: "V_C": invalid identifier_ ERROR from the below SQL .
DECLARE
v_sql VARCHAR2(4000);
v_c VARCHAR2(100);
v_co VARCHAR2(100);
v_from date;
v_to date;
BEGIN
v_from:= to_date(:P49_FROM,'DD-MON-YY');
v_to := to_date(:P49_TO,'DD-MON-YY');
v_c := UPPER(:P49_CONTRACT_NO);
v_co := UPPER(:P49_CONTRACTOR);
v_sql := ' SELECT LNAME||'', ''||FNAME CONTRACTOR,'
     ||' VS.TEAM as TEAM,'
     ||' VS.CONTRACT_NO as CONTRACT_NO,'
     ||' VS.POSITION_NO as POSITION_NO,'
     ||' VS.HOURLY_RATE as HOURLY_RATE,'
     ||' VS.WEEK_ENDING as WEEK_ENDING,'
||' VS.PIN,'
     ||' sum(VS.MON) as MON,'
     ||' sum(VS.TUE) as TUE,'
     ||' sum(VS.WED) as WED,'
     ||' sum(VS.THU) as THU,'
     ||' sum(VS.FRI) as FRI,'
     ||' sum(VS.SAT) as SAT,'
     ||' sum(VS.SUN) as SUN,'
     ||' sum(VS.TOTAL) as TOTAL, '
||' (sum(VS.TOTAL) * VS.HOURLY_RATE) TOTAL_COST '
||' FROM VS '
||' WHERE (VS.WEEK_ENDING) BETWEEN v_from AND v_to ';
IF v_c != 'NULL' THEN
v_sql := v_sql || ' AND INSTR(UPPER(VS.CONTRACT_NO),v_c) > 0';
END IF;
IF v_co != 'NULL' THEN
v_sql := v_sql||' AND instr(upper(VS.AD_ID), v_co) > 0';
END IF;
v_sql := v_sql ||' AND VS.EMP_APPROVAL = "Y" '
||' AND VS.MGR_APPROVAL = "Y" '
|| 'group by LNAME||'', ''||FNAME,'
     || 'VS.FIRM,'
     || 'VS.MANAGER_NAME,'
     || 'VS.TEAM,'
     || 'VS.CONTRACT_NO,'
     || 'VS.POSITION_NO,'
     || 'VS.HOURLY_RATE,'
     || 'VS.WEEK_ENDING,'
|| 'VS.PIN,'
|| 'VS.PIN_DESCRIPTION';
execute immediate v_sql;
END;