************************************************************************* 
      ** 
      ** Source File Name = advsql.sqb   
      ** 
      ** Licensed Materials - Property of IBM 
      ** 
      ** (C) COPYRIGHT International Business Machines Corp. 1995, 2000  
      ** All Rights Reserved. 
      ** 
      ** US Government Users Restricted Rights - Use, duplication or 
      ** disclosure restricted by GSA ADP Schedule Contract with IBM Corp. 
      ** 
      ** 
      ** PURPOSE: an example of using advanced SQL statements. 
      **          The advanced SQL statement to be executed and displayed 
      **          is : 
      **             SELECT LASTNAME, WORKDEPT FROM EMPLOYEE 
      **                WHERE CASE 
      **                   WHEN BONUS+COMM = 0 THEN NULL 
      **                   ELSE SALARY/(BONUS+COMM) 
      **                END > 10 
      ** 
      ** For more information about these samples see the README file. 
      ** 
      ** For more information on Programming in COBOL, see the: 
      **    -  "Programming in COBOL" section of the Application Development Guide. 
      ** 
      ** For more information on Building COBOL Applications, see the: 
      **    - "Building COBOL Applications" section of the Application Building Guide. 
      ** 
      ** For more information on the SQL language see the SQL Reference. 
      ** 
      ************************************************************************* 

       Identification Division.
       Program-ID. "advsql".

       Data Division.
       Working-Storage Section.

           copy "sqlenv.cbl".
           copy "sql.cbl".
           copy "sqlca.cbl".

           EXEC SQL BEGIN DECLARE SECTION END-EXEC.

       01 userid            pic x(8).
       01 passwd.
         49 passwd-length   pic s9(4) comp-5 value 0.
         49 passwd-name     pic x(18).
       01 lname.
        49 lname-length     pic s9(4) comp-5 value 15.
        49 lname-name       pic x(15).
       01 wdept             pic x(3).

           EXEC SQL END DECLARE SECTION END-EXEC.

       77 errloc          pic x(80).
       77 counter         pic s9(4) comp-5 value 0.

       Procedure Division.
       Main Section.
           display "Sample COBOL program: ADVSQL".
           display "the statment to be executed:".
           display " ".
           display "SELECT LASTNAME, WORKDEPT FROM EMPLOYEE".
           display "   WHERE CASE".
           display "      WHEN BONUS+COMM = 0 THEN NULL".
           display "      ELSE SALARY/(BONUS+COMM)".
           display "   END > 10".
           display " ".

      * Get database connection information. 
           display "Enter your user id (default none): " 
                with no advancing.
           accept userid.

           if userid = spaces
             EXEC SQL CONNECT TO sample END-EXEC
           else
             display "Enter your password : " with no advancing
             accept passwd-name.

      * Passwords in a CONNECT statement must be entered in a VARCHAR 
      * format with the length of the input string. 
           inspect passwd-name tallying passwd-length for characters
              before initial " ".

           display " ".

           EXEC SQL CONNECT TO sample USER :userid USING :passwd
               END-EXEC.
           move "CONNECT TO" to errloc.
           call "checkerr" using SQLCA errloc.

      * declare the cursor for the advanced SQL statement. 
           EXEC SQL DECLARE c1 CURSOR FOR
                    SELECT LASTNAME, WORKDEPT FROM employee
                    WHERE CASE
                       WHEN BONUS+COMM = 0 THEN NULL
                       ELSE SALARY/(BONUS+COMM)
                    END > 10 END-EXEC.

           EXEC SQL OPEN c1 END-EXEC.
           move "OPEN" to errloc.
           call "checkerr" using SQLCA errloc.

           display "LASTNAME    WORKDEPT".

      * FETCH the rows from the table corresponding to the SQL statement. 
           perform Fetch-Loop thru End-Fetch-Loop
              until SQLCODE not equal 0.

           display "   ", counter, " record(s) selected".

           EXEC SQL CONNECT RESET END-EXEC.
           move "CONNECT RESET" to errloc.
           call "checkerr" using SQLCA errloc.
       End-Main.
           go to End-Prog.

       Fetch-Loop Section.
           move spaces to lname-name.
           EXEC SQL FETCH c1 INTO :lname, :wdept END-EXEC.

           if SQLCODE not equal 0
              go to End-Fetch-Loop.
           display lname-name, "  ", wdept.

           add 1 to counter.
       End-Fetch-Loop. exit.

       End-Prog.
           stop run.