Question : ignore "no data found" error

Hi,

How can I make Oracle 10g to ignore "no data found" error?

I have this peace of code which processes insert statement based on the existance of a record. The logic is right but, the only thing that bothers me is stupid error message, which stops the execution when no data is found in *first select into statement*...   :(

Anyone has ever dealt with this kind of issue?

DECLARE
   zip mp_postal_codes.postal_code_pk%TYPE;
   zip2 mp_city_nicknames.postal_code_pk%TYPE;
   state mp_state_province_codes.state_province_id_pk%TYPE;
   city mp_postal_codes.city%TYPE;
BEGIN
   select case when (trim(cn.postal_code_pk) is null) then null else cn.postal_code_pk end as zp into zip2
         from mp_city_nicknames cn
            inner join mp_state_province_codes spc
               on cn.state_province_id_fk = spc.state_province_id_pk
         where cn.postal_code_pk = :P7_POSTAL_CODE
         and spc.state_province_abbr = :P7_STATE;

   select spc.state_province_id_pk, pc.postal_code_pk into state, zip
         from mp_postal_codes pc
            inner join mp_state_province_codes spc
               on pc.state_province_id_fk = spc.state_province_id_pk
         where pc.postal_code_pk = :P7_POSTAL_CODE
         and spc.state_province_abbr = :P7_STATE
         and rownum=1;

   select case when (trim(pc.city) is null) then null else pc.city end as ct into city
         from mp_postal_codes pc
            inner join mp_state_province_codes spc
               on pc.state_province_id_fk = spc.state_province_id_pk
         where pc.postal_code_pk = :P7_POSTAL_CODE
         and spc.state_province_abbr = :P7_STATE
         and pc.city = :P7_CITY
         and rownum=1;  

   if (zip2 is null) then
      if ((zip is not null) and (state is not null) and (city is null)) then        
           insert into
              mp_postal_codes_bak (postal_code_pk, city, state_province_id_fk)
              values (zip, :P7_CITY, state);
           zip := null;
           state := null;
      end if;
      zip2 := null;
   end if;

   --EXCEPTION
      --when others then
         --zip := null;
END;

Answer : ignore "no data found" error

you'll then need 3 enclosed blocks to handle each exception:

DECLARE
   zip mp_postal_codes.postal_code_pk%TYPE;
   zip2 mp_city_nicknames.postal_code_pk%TYPE;
   state mp_state_province_codes.state_province_id_pk%TYPE;
   city mp_postal_codes.city%TYPE;
BEGIN
   

   BEGIN
   select case when (trim(cn.postal_code_pk) is null) then null else cn.postal_code_pk end as zp into zip2
         from mp_city_nicknames cn
            inner join mp_state_province_codes spc
               on cn.state_province_id_fk = spc.state_province_id_pk
         where cn.postal_code_pk = :P7_POSTAL_CODE
         and spc.state_province_abbr = :P7_STATE;
    EXCEPTION
    when no_data_found then
       zip2 := null;
    END;

   
   BEGIN
   select spc.state_province_id_pk, pc.postal_code_pk into state, zip
         from mp_postal_codes pc
            inner join mp_state_province_codes spc
               on pc.state_province_id_fk = spc.state_province_id_pk
         where pc.postal_code_pk = :P7_POSTAL_CODE
         and spc.state_province_abbr = :P7_STATE
         and rownum=1;
    EXCEPTION
    when no_data_found then
       state := null;
       zip := null;
    END;

   
   BEGIN
   select case when (trim(pc.city) is null) then null else pc.city end as ct into city
         from mp_postal_codes pc
            inner join mp_state_province_codes spc
               on pc.state_province_id_fk = spc.state_province_id_pk
         where pc.postal_code_pk = :P7_POSTAL_CODE
         and spc.state_province_abbr = :P7_STATE
         and pc.city = :P7_CITY
         and rownum=1;  
    EXCEPTION
    when no_data_found then
       city := null;
    END;

   
if (zip2 is null) then
      if ((zip is not null) and (state is not null) and (city is null)) then        
           insert into
              mp_postal_codes_bak (postal_code_pk, city, state_province_id_fk)
              values (zip, :P7_CITY, state);
           zip := null;
           state := null;
      end if;
      zip2 := null;
   end if;

   EXCEPTION
      when others then
         zip := null;
END;