Question

I am trying to get the sql query below to work but I am getting an error, my problem is as follows:

I need to loop through a results set from a select statement (this part is fine). Inside the loop for each row I need to check if the URL exists in tableA. If it does then insert a mapping into tableB, otherwise insert a new row into tableC.

This is what I have but when I try to execute I get an error on the line with the IF saying ORA-06550: line 8, column 15:PLS-00103: Encountered the symbol “SELECT” when expecting one of the following:( – + case mod new no…..

DECLARE 
STANDARD_LINK_ID TABLEB.LINK_ID%type;

BEGIN   
      FOR LINK_ROW IN ( SELECT LINKTEXT, LINKURL, CORPID FROM OLD_DATA)
      LOOP
          IF (SELECT COUNT(URL) FROM TABLEA WHERE URL = LINK_ROW.LINKURL) = 1
          THEN
            SELECT LINKID INTO STANDARD_LINK_ID FROM TABLEA WHERE URL = LINK_ROW.URL;
            INSERT INTO TABLEB(LINK_ID, CORP_ID) 
            VALUES (STANDARD_LINK_ID,  LINK_ROW.CORPID);
          ELSE
            INSERT INTO TABLEB(LINK_ID, LINK_NAME, URL, CORP_ID) 
            VALUES (SEQ_LINK.NEXTVAL, LINK_ROW.LINKTEXT, LINK_ROW.LINKURL, 
                                 LINK_ROW.CORP_ID);
          END IF;                 
      END LOOP;
    COMMIT;
END;

Answer 1

I’ve seen it done this way; but not the select with return value embeded in the condition

https://forums.oracle.com/forums/thread.jspa?threadID=177035

DECLARE 
STANDARD_LINK_ID TABLEB.LINK_ID%type;
DECLARE W_LINK_COUNT NUMBER (1,0);

BEGIN   
      FOR LINK_ROW IN ( SELECT LINKTEXT, LINKURL, CORPID FROM OLD_DATA)
      LOOP
          SELECT COUNT(URL) INTO W_LINK_COUNT FROM TABLEA WHERE URL = LINK_ROW.LINKURL;
          IF  W_LINK_COUNT = 1
          THEN
            SELECT LINKID INTO STANDARD_LINK_ID FROM TABLEA WHERE URL = LINK_ROW.URL;
            INSERT INTO TABLEB(LINK_ID, CORP_ID) 
            VALUES (STANDARD_LINK_ID,  LINK_ROW.CORPID);
          ELSE
            INSERT INTO TABLEB(LINK_ID, LINK_NAME, URL, CORP_ID) 
            VALUES (SEQ_LINK.NEXTVAL, LINK_ROW.LINKTEXT, LINK_ROW.LINKURL, 
                                 LINK_ROW.CORP_ID);
          END IF;                 
      END LOOP;
    COMMIT;
END;