SQL query, IF ELSE issue - Help.

Question

I am trying to migrate data from one table to another, however I am having problems trying to figure out a small issue in my Query.
I'm using Oracle 11g, SQL Developer 3.0
here is my old table
CREATE TABLE PROD.RELATED_OFFENDERS
     CREATED_DATETIME DATE ,
     LAST_UPD_DATETIME DATE ,
     LAST_UPD_ID VARCHAR2 (30 BYTE) ,
     CREATOR_ID VARCHAR2 (30 BYTE) ,
     USSC_ID NUMBER (10) ,
     REL_ORG_ID NUMBER (10)  NOT NULL ,
     REL_ORG_NAME VARCHAR2 (100 BYTE) ,
     REL_IND_NAMES VARCHAR2 (100 BYTE) ,
     REL_DOCKET_NUM VARCHAR2 (7 BYTE) ,
     REL_LEVEL_AUTH NUMBER (2) ,
     REL_LEVEL_AUTH_TEXT VARCHAR2 (240 BYTE) ,
     SENT_TYPE_CODE NUMBER (2) ,
     INDICATOR VARCHAR2 (1 BYTE)
ALTER TABLE PROD.RELATED_OFFENDERS
    ADD CONSTRAINT RO_PK PRIMARY KEY ( REL_ORG_ID ) ;New table
CREATE TABLE USSC_CASES.CORP_RELATED_OFFENDERS
     REL_ORG_ID NUMBER (10)  NOT NULL ,
     SENT_ID NUMBER (12)  NOT NULL ,
     DEF_TYPE_CODE NUMBER (1) ,
     DEF_TYPE_NAME VARCHAR2 (100 BYTE) ,
     REL_DOCKET_NUM VARCHAR2 (7 BYTE) ,
     REL_LVL_AUTH NUMBER (1) ,
     REL_LVL_AUTH_TEXT VARCHAR2 (240 BYTE)
ALTER TABLE USSC_CASES.CORP_RELATED_OFFENDERS
    ADD CONSTRAINT CORP_REL_OFF_PK PRIMARY KEY ( REL_ORG_ID ) ;In the old table you will notice i have the following attributes:
REL_ORG_NAME VARCHAR2 (100 BYTE) ,
REL_IND_NAMES VARCHAR2 (100 BYTE) ,
In my new table I have both columns as one called DEF_TYPE_NAME VARCHAR2 (100 BYTE).
what I'm trying to do is use the INDICATOR column VALUE (old table) for each row and say the following in SQL code:
(if INDICATOR = 'I' then DEF_TYPE_NAME = the value of REL IND_NAMES
else if INDICATOR = 'O' then DEF_TYPE_NAME = the value of REL_ORG_NAME) AS DEF_TYPE_NAME
here is my query
INSERT INTO USSC_CASES.CORP_RELATED_OFFENDERS
SELECT
          RO.REL_ORG_ID AS REL_ORG_ID,
          S.SENT_ID AS SENT_ID,
          DECODE(RO.INDICATOR, UPPER(TRIM('I')), 1, 2) AS DEF_TYPE_CODE,
          AS DEF_TYPE_NAME, -- here is where I'm having issues.
                RO.REL_DOCKET_NUM AS REL_DOCKET_NUM,
          RO.REL_LVL_AUTH AS REL_LVL_AUTH,
          RO.REL_LVL_AUTH_TEXT AS REL_LVL_AUTH_TEXT
FROM      PROD.RELATED_OFFENDERS RO,
          PROD.SENTENCES S
WHERE     RO.USSC_ID = S.CORPSENT_USSC_ID
AND      RO.SENT_TYPE_CODE = S.SENT_TYPE_CODE
AND          RO.SENT_TYPE_CODE = 1
ORDER BY REL_ORG_ID;Thanks in advance for your help.

Answer 1

INSERT INTO USSC_CASES.CORP_RELATED_OFFENDERS
SELECT  RO.REL_ORG_ID AS REL_ORG_ID,
        S.SENT_ID AS SENT_ID,
        CASE RO.INDICATOR
          WHEN 'I' THEN REL_IND_NAMES
          WHEN 'O' THEN REL_ORG_NAME
        END AS DEF_TYPE_NAME,
        RO.REL_DOCKET_NUM AS REL_DOCKET_NUM,
        RO.REL_LVL_AUTH AS REL_LVL_AUTH,
        RO.REL_LVL_AUTH_TEXT AS REL_LVL_AUTH_TEXT
  FROM  PROD.RELATED_OFFENDERS RO,
        PROD.SENTENCES S
  WHERE RO.USSC_ID = S.CORPSENT_USSC_ID
    AND RO.SENT_TYPE_CODE = S.SENT_TYPE_CODE
    AND RO.SENT_TYPE_CODE = 1
  ORDER BY REL_ORG_ID;SY.