join: table A > B > C where not always given in B

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  Hi friends,
  
  I have a problem in a stored procedure where I wrote an update with a where clause clause statement. At some point only one line should be updated according to the unique identifier in where clause.
  
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  CREATE OR REPLACE PROCEDURE MDMADM.proc_MDM_InsertCntryDetails
  (
  CntryMasterCode IN VARCHAR2,
  CntryName IN VARCHAR2,
  MDMUser IN VARCHAR2,
  Exists IN ITS ENTIRETY,
  status in VARCHAR2,
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  MirusAttValues IN VARCHAR2 default NULL,
  GenisysAttNames IN VARCHAR2 default NULL,
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  strSQLXGen VARCHAR (1000);
  strSQLMirus VARCHAR (1000);
  strSQLGenisys VARCHAR (1000);
  nMaxMDMCode INTEGER.
  ifExist INTEGER;
  
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  NAME: proc_MDM_InsertCntryDetails
  PURPOSE:
  
  REVISIONS:
  Worm Date Description of the author
  --------- ---------- --------------- ------------------------------------
  1.0 03/07/2009 1. Created this procedure.
  
  NOTES:
  
  Keywords to replace automatically available Auto:
  Object name: proc_MDM_InsertCntryDetails
  SYSDATE: 03/07/2009
  Date and time: 03/07/2009, 19:11:20 and 03/07/2009-19:11:20
  User name: (put in TOAD Options, editor of the procedure)
  Name of the table: (defined in the dialog box "New PL/SQL object")
  
  ******************************************************************************/
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  END IF;
  
  
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  VALUES(nMaxMDMCode,CntryMasterCode,CntryName,MDMUser,exist,Status,action,sysdate,Inserted_By);
  
  strSQLXGen: = ' INSERT IN MDM_COUNTRY_MAPPING (MDM_CODE, SYSTEM_NAME, SYSTEM_CODE,' |) XGenAttNames | DAT_INSERTED_BY, DAT_INSERT_DATE) ' |
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  EXECUTE IMMEDIATE strSQLXGen;
  
  strSQLMirus: = ' INSERT IN MDM_COUNTRY_MAPPING (MDM_CODE, SYSTEM_NAME, SYSTEM_CODE,' |) MirusAttNames | DAT_INSERTED_BY, DAT_INSERT_DATE) ' |
  "VALUES (' |)" nMaxMDMCode | ',' || '''' || "Mirus | '''' || ',2,' || MirusAttValues | ',' || '''' || Inserted_By | '''' || SYSDATE)';
  
  EXECUTE IMMEDIATE strSQLMirus;
  
  strSQLGenisys: = ' INSERT IN MDM_COUNTRY_MAPPING (MDM_CODE, SYSTEM_NAME, SYSTEM_CODE,' |) GenisysAttNames | DAT_INSERTED_BY, DAT_INSERT_DATE) ' |
  "VALUES (' |)" nMaxMDMCode | ',' || '''' || "Genisys | '''' || ',3,' || GenisysAttValues | ',' || '''' || Inserted_By | '''' || SYSDATE)';
  
  EXECUTE IMMEDIATE strSQLGenisys;
  
  ON THE OTHER
  
  
  
  UPDATE MDM_COUNTRY_MASTER
  SET MDM_DESCRIPTION = CntryName, DAT_MODIFIED_BY = Modified_By, DAT_MODIFY_DATE = SYSDATE.
  MDM_USER = MDMUser, MDM_ACTION = Action, MDM_STATUS = status MDM_EXIST = exist WHERE MDM_CODE = Mdm_Code;
  
  
  
  
  COUNT (*) of SELECT INTO ifExist FROM MDM_COUNTRY_MAPPING WHERE SYSTEM_CODE = 1 AND MDM_CODE = Mdm_Code;
  
  IfExist IF = 0 THEN
  
  strSQLXGen: = ' INSERT IN MDM_COUNTRY_MAPPING (MDM_CODE, SYSTEM_NAME, SYSTEM_CODE,' |) XGenAttNames | DAT_INSERTED_BY, DAT_INSERT_DATE) ' |
  ' VALUES(' ||) Mdm_Code | ',' || '''' || "XGen | '''' || ',1,' || XGenAttValues | ',' || '''' || Modified_By | '''' || SYSDATE)';
  
  EXECUTE IMMEDIATE strSQLXGen;
  
  ON THE OTHER
  strSQLXGen: = "UPDATE MDM_COUNTRY_MAPPING SET | XGenModify | ', DAT_MODIFY_DATE = SYSDATE, DAT_MODIFIED_BY =' | '''' || Modified_By | '''' || "WHERE MDM_CODE =' | ' Mdm_Code | "and SYSTEM_CODE = 1';
  
  EXECUTE IMMEDIATE strSQLXGen;
  
  END IF;
  
  
  COUNT (*) of SELECT INTO ifExist FROM MDM_COUNTRY_MAPPING WHERE SYSTEM_CODE = 2 AND MDM_CODE = Mdm_Code;
  
  IfExist IF = 0 THEN
  
  strSQLMirus: = ' INSERT IN MDM_COUNTRY_MAPPING (MDM_CODE, SYSTEM_NAME, SYSTEM_CODE,' |) MirusAttNames | DAT_INSERTED_BY, DAT_INSERT_DATE) ' |
  ' VALUES(' ||) Mdm_Code | ',' || '''' || "Mirus | '''' || ',2,' || MirusAttValues | ',' || '''' || Modified_By | '''' || SYSDATE)';
  
  EXECUTE IMMEDIATE strSQLMirus;
  
  ON THE OTHER
  strSQLMirus: = "UPDATE MDM_COUNTRY_MAPPING SET | MirusModify | ', DAT_MODIFY_DATE = SYSDATE, DAT_MODIFIED_BY =' | '''' || Modified_By | '''' || "WHERE MDM_CODE =' | ' Mdm_Code | "and SYSTEM_CODE = 2';
  
  EXECUTE IMMEDIATE strSQLMirus;
  
  END IF;
  
  
  COUNT (*) of SELECT INTO ifExist FROM MDM_COUNTRY_MAPPING WHERE SYSTEM_CODE = 3 AND MDM_CODE = Mdm_Code;
  
  IfExist IF = 0 THEN
  
  strSQLGenisys: = ' INSERT IN MDM_COUNTRY_MAPPING (MDM_CODE, SYSTEM_NAME, SYSTEM_CODE,' |) GenisysAttNames | DAT_INSERTED_BY, DAT_INSERT_DATE) ' |
  ' VALUES(' ||) Mdm_Code | ',' || '''' || "Genisys | '''' || ',3,' || GenisysAttValues | ',' || '''' || Modified_By | '''' || SYSDATE)';
  
  EXECUTE IMMEDIATE strSQLGenisys;
  
  ON THE OTHER
  strSQLGenisys: = "UPDATE MDM_COUNTRY_MAPPING SET | GenisysModify | ', DAT_MODIFY_DATE = SYSDATE, DAT_MODIFIED_BY =' | '''' || Modified_By | '''' || "WHERE MDM_CODE =' | ' Mdm_Code | "and SYSTEM_CODE = 3';
  
  EXECUTE IMMEDIATE strSQLGenisys;
  
  END IF;
  
  
  
  END IF;
  
  
  
  EXCEPTION
  WHEN NO_DATA_FOUND THEN
  NULL;
  WHILE OTHERS THEN
  -Consider recording the error and then re-raise
  LIFT;
  END proc_MDM_InsertCntryDetails;
  /
  
  
  Thank you

  >
  WHERE mdm_code = mdm_code
  >

  This will always be value true - similar to WHERE 1 = 1.

  You typed it wrong or is the same as the variable column name? If they are the same test rename one of them.

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