Merge Two SQL - need help

Question

Hi All,
Need some tips - like i have two different process runing with just only a SQL query on each.
The both the process SQL Query is 90% similar Rather the Second sql has extra two columns
and few filterning conditions is different which is Marked in bold. My question is there any way that
i can write a single SQL statement that works for my both process. The Difference between the
Query 1 and Query 2 have marked in Bold/underlined.
Query 1
SELECT SUBCON.MEME_CK,MEMBER_ID,LINE_NUMBER,RECIPIENT_NUMBER,MEMBER_LAST_NAME,MEMBER_FIRST_NAME,MEMBER_MIDDLE_INIT,MEMBER_SSN,MEMBER_DOB,
       MEMBER_ADDRESS_1,MEMBER_ADDRESS_2,MEMBER_CITY,MEMBER_STATE,MEMBER_ZIP_CODE,MEMBER_COUNTY_CODE,MEMBER_SEX,MEMBER_PHONE_NUMBER,
       HH_LAST_NAME,HH_FIRST_NAME,RELATIONSHIP_CODE,PCP_ID_NUMBER,PCP_NAME,PCP_PHONE_NUMBER,PCP_ADDRESS_1,PCP_ADDRESS_2,PCP_CITY,
       PCP_STATE,PCP_ZIP_CODE,PCP_COUNTY_CODE,PCP_EFFECTIVE_DATE,PCD_ID_NUMBER,PCD_NAME,PCD_PHONE_NUMBER,PCD_ADDRESS_1,
       PCD_ADDRESS_2,PCD_CITY,PCD_STATE,PCD_ZIP_CODE,PCD_COUNTY_CODE,PCD_EFFECTIVE_DATE,GROUP_EFF_DATE,GROUP_TERM_DATE,
       GROUP_NUMBER,PROGRAM_STATUS_CODE,LANGUAGE_INDICATOR,VISION_IMP_IND,HEARING_IMP_IND,SPECIAL_NEEDS_FLAG,ELIG_EFF_DATE,
       ELIG_TERM_DATE,BEN_GROUP_NO,BEN_GROUP_EFF_DT,MEDICARE_IND,TPL_RX_PAYER,TPL_RX_PAYER_EFF_DT,TPL_RX_PAYER_NAME,INSURANCE_CODE,
       POLICY_NUMBER,TYPE_OF_COVERAGE,LOB,COUNTY_STATE_RECORD,STATE_RECORD_NUMBER,GROUP_CODE,REV_CATEGORY_CODE,AQ_IND,MECD_CSCS_ID,
       MECB_EFF_DT,MCRE_ID,MECB_TERM_DT,rtrim(SBAD_PHONE) as "SBAD_PHONE"
FROM      EXT_MEGD_SBCN_ELG_DLY SUBCON,
          CMC_MECD_MEDICAID MECD,
          CMC_SBAD_ADDR SBAD,
          CMC_MEME_MEMBER MEME
WHERE     SUBCON.MEME_CK = MECD.MEME_CK
AND        DATEDIFF(mm,MEMBER_DOB, DATEADD(mm,  1,GETDATE())) < 25_
AND        Right(MECD_MCTR_AIDC,2) not in ('31', '33')
AND        MECD_MCTR_AIDC Not in ('PC36','J36')
AND        SUBCON.MEME_CK = MEME.MEME_CK
AND        MEME.SBSB_CK *= SBAD.SBSB_CK
AND        SBAD.SBAD_TYPE = "1"
AND        SBAD.SBAD_PHONE <> " "
AND        SBAD.SBAD_PHONE <> "0000000000"
AND        CHAR_LENGTH(RTRIM(SBAD_PHONE)) < 11Query 2
SELECT SUBCON.MEME_CK,MEMBER_ID,LINE_NUMBER,RECIPIENT_NUMBER,MEMBER_LAST_NAME,MEMBER_FIRST_NAME, MEMBER_MIDDLE_INIT,MEMBER_SSN,MEMBER_DOB,
       MEMBER_ADDRESS_1,MEMBER_ADDRESS_2,MEMBER_CITY,MEMBER_STATE,MEMBER_ZIP_CODE,MEMBER_COUNTY_CODE,MEMBER_SEX,MEMBER_PHONE_NUMBER,
       HH_LAST_NAME,HH_FIRST_NAME,RELATIONSHIP_CODE,PCP_ID_NUMBER,PCP_NAME,PCP_PHONE_NUMBER,PCP_ADDRESS_1,PCP_ADDRESS_2,PCP_CITY,
       PCP_STATE,PCP_ZIP_CODE,PCP_COUNTY_CODE,PCP_EFFECTIVE_DATE,PCD_ID_NUMBER,PCD_NAME,PCD_PHONE_NUMBER,PCD_ADDRESS_1,PCD_ADDRESS_2,
       PCD_CITY,PCD_STATE,PCD_ZIP_CODE,PCD_COUNTY_CODE,PCD_EFFECTIVE_DATE,GROUP_EFF_DATE,GROUP_TERM_DATE,GROUP_NUMBER,PROGRAM_STATUS_CODE,
       LANGUAGE_INDICATOR,VISION_IMP_IND,HEARING_IMP_IND,SPECIAL_NEEDS_FLAG,ELIG_EFF_DATE,ELIG_TERM_DATE,BEN_GROUP_NO,BEN_GROUP_EFF_DT,
       MEDICARE_IND,TPL_RX_PAYER,TPL_RX_PAYER_EFF_DT,TPL_RX_PAYER_NAME,INSURANCE_CODE,POLICY_NUMBER,TYPE_OF_COVERAGE,LOB,COUNTY_STATE_RECORD,
       STATE_RECORD_NUMBER,GROUP_CODE,REV_CATEGORY_CODE,AQ_IND,MECD_CSCS_ID,MECB_EFF_DT,MCRE_ID,MECB_TERM_DT,RTRIM(SBAD_PHONE) as "SBAD_PHONE",
       PRCF_MCTR_SPEC,PRAD_FAX
FROM      EXT_MEGD_SBCN_ELG_DLY SUBCON,
          CMC_MECD_MEDICAID MECD,
          CMC_SBAD_ADDR SBAD,
          CMC_MEME_MEMBER MEME,
          CMC_PRPR_PROV    PRPR,_
          CMC_PRAD_ADDRESS PRAD_
WHERE     SUBCON.MEME_CK = MECD.MEME_CK
AND        Right(MECD_MCTR_AIDC,2) not in ('31', '33')
AND        MECD_MCTR_AIDC Not in ('PC36','J36')
AND        SUBCON.MEME_CK = MEME.MEME_CK
AND        SUBCON.PCP_ID_NUMBER  = PRPR.PRPR_ID*_
AND        SUBCON.PCP_ID_NUMBER  = PRAD.PRAD_ID*_
AND        PRAD.PRAD_TYPE = 'PRI'_
AND        (CONVERT(CHAR(10),GETDATE(),101))  BETWEEN PRAD.PRAD_EFF_DT AND PRAD.PRAD_TERM_DTAND        MEME.SBSB_CK *= SBAD.SBSB_CK_AND        SBAD_TYPE = "1"
AND        SBAD_PHONE <> " "
AND        SBAD_PHONE <> "0000000000"
AND        CHAR_LENGTH(RTRIM(SBAD_PHONE)) < 11Any suggestions Welcome.
Edited by: USER_X on May 18, 2009 11:03 AM

Answer 1

Hi,
The simplest thing, and perhaps the fastest, is to do a UNION, as Someoneelse suggested.
See [this thread|http://forums.oracle.com/forums/message.jspa?messageID=3430965#3430965] for an example.
Depending on your data, you could do an Outer Join of the two tables that are only in Query 2 to the other tables.
The WHERE clause would look something like this:
WHERE     SUBCON.MEME_CK = MECD.MEME_CK
AND        Right(MECD_MCTR_AIDC,2) not in ('31', '33')
AND        MECD_MCTR_AIDC Not in ('PC36','J36')
AND        SUBCON.MEME_CK = MEME.MEME_CK
AND        SBAD_PHONE  " "
AND        SBAD_PHONE  "0000000000"
AND        CHAR_LENGTH(RTRIM(SBAD_PHONE)) < 11
AND        (     DATEDIFF (mm, MEMBER_DOB, DATEADD(mm,  1,GETDATE())) < 25     -- Extra condition from Query 1
        OR  (                                                                    -- Extra conditions from Query 2
                   SUBCON.PCP_ID_NUMBER   = PRPR.PRPR_ID
          AND   SUBCON.PCP_ID_NUMBER   = PRAD.PRAD_ID
          AND   PRAD.PRAD_TYPE          = 'PRI'_
          AND   (CONVERT(CHAR(10),GETDATE(),101))  BETWEEN PRAD.PRAD_EFF_DT
                                          AND      PRAD.PRAD_TERM_DT
          AND   MEME.SBSB_CK           = SBAD.SBSB_CK
          AND   SBAD_TYPE               = 1
        )Since all the tables in the Outer Join are referenced in the conditions from Query 2, this has the effect of making that an Inner Join unless the extra conditions from Query 1 were met.
iIn the SELECT claue, use a CASE expression for each column that occurs only in Query 2 that repeats all the extra conditions for Query 2:
,       CASE
          WHEN  SUBCON.PCP_ID_NUMBER   = PRPR.PRPR_ID
          AND   SUBCON.PCP_ID_NUMBER   = PRAD.PRAD_ID
          AND   PRAD.PRAD_TYPE          = 'PRI'_
          AND   (CONVERT(CHAR(10),GETDATE(),101))  BETWEEN PRAD.PRAD_EFF_DT
                                          AND      PRAD.PRAD_TERM_DT
          AND   MEME.SBSB_CK           = SBAD.SBSB_CK
          AND   SBAD_TYPE               = 1
          THEN  PRCF_MCTR_SPEC
       END     AS PRCF_MCTR_SPECThat column will be NULL if the extra conditions from Query 2 are not met.
Instead of computing all those extra conditions over and over again, you may want to compute them once for all in a sub-query:
SELECT  ...
,       CASE
          WHEN  SUBCON.PCP_ID_NUMBER   = PRPR.PRPR_ID
          AND   SUBCON.PCP_ID_NUMBER   = PRAD.PRAD_ID
          AND   PRAD.PRAD_TYPE          = 'PRI'_
          AND   (CONVERT(CHAR(10),GETDATE(),101))  BETWEEN PRAD.PRAD_EFF_DT
                                          AND      PRAD.PRAD_TERM_DT
          AND   MEME.SBSB_CK           = SBAD.SBSB_CK
          AND   SBAD_TYPE               = 1
          THEN  1
                                ELSE  0
       END     AS query_2_extraThen, in the main querry, you can use use that column:
WHERE     ...
AND        (     DATEDIFF (mm, MEMBER_DOB, DATEADD(mm,  1,GETDATE())) < 25     -- Extra condition from Query 1
        OR     query_2_extra = 1                                              -- Extra conditions from Query 2
        )