Replace NULL value with any other data block value

Question

Hi,
I have forms 10g, after query of record on a form I want to replace certain column values if they found Null with any other datablock values I have tried NVL(column_name, :block.column_name) but it give error that no object reference found.
Thanks and Regards, Khawar

Answer 1

Hi,
This is the SQL statement issued by Forms
SELECT RD.REGION_NAME,GL.GRID_CODE,G.GRID_NAME,GL.R_DATE,NVL(GL.R_TIME, :PARAMETER.R_TIME),GL.LOAD_MW,GL1.LOAD_MW,GL.LOAD_MVAR,GL.LOAD_SHED_MW,GL.TEMPRATURE,GL.HUMIDITY,GL.FORECAST_FACTOR FROM grid G, grid_load gl, region_district rd, grid_load gl1 WHERE gl.grid_code = gl1.grid_code(+) and gl.r_time = gl1.r_time(+) and g.grid_code = gl.grid_code(+) and to_date(to_char(gl.r_date(+),'dd/mm/yyyy'),'dd/mm/yyyy') = to_date(to_char(:1,'dd/mm/yyyy'),'dd/mm/yyyy') and to_date(to_char(gl1.r_date(+),'dd/mm/yyyy'),'dd/mm/yyyy') =to_date(to_char(gl.r_date,'dd/mm/yyyy'),'dd/mm/yyyy') - 1 and to_number(gl.r_time(+)) = to_number(:2) and g.grid_code not in ('KBR','BR2') and g.DISTRICT_CODE=RD.DISTRICT_CODE order by rd.Region_name, g.GRID_NAME
I have tried to update those column with other value by checking there Null status in Post-Query trigger but it raises error SQL command not properly ended ORA-00933.
Thanks and Regards, Khawar