HELPLIB.HLB  —  RDML72  Statements  FIRST_FROM, Examples
    The following programs demonstrate the use of the FIRST FROM
    clause. The programs find the first record in the JOBS relation
    with the value "Company President" in the field JOB_TITLE. Using
    this record's value for JOB_CODE, these programs create a record
    stream containing the records in the CURRENT_JOB relation that
    have this same job code. The programs print the value that the
    first record from this record stream holds in the LAST_NAME
    field.

1  –  C Example

    #include <stdio.h>
    DATABASE PERS = FILENAME "PERSONNEL";

    DECLARE_VARIABLE name SAME AS PERS.CURRENT_JOB.LAST_NAME;
    main()
    {
    READY PERS;
    START_TRANSACTION READ_ONLY;

    GET
     name =  FIRST C.LAST_NAME FROM C IN CURRENT_JOB
             WITH C.JOB_CODE = FIRST J.JOB_CODE FROM J IN JOBS
             WITH J.JOB_TITLE = "Company President"
             SORTED BY C.JOB_CODE;
    END_GET;

    printf ("Last name is %s", name);

    COMMIT;
    FINISH;
    }

2  –  Pascal Example

    program first_val (input,output);
    DATABASE PERS = FILENAME 'PERSONNEL';

    DECLARE_VARIABLE name SAME AS PERS.CURRENT_JOB.LAST_NAME;

    begin
    READY PERS;
    START_TRANSACTION READ_ONLY;

    GET
      name =  FIRST C.LAST_NAME FROM C IN CURRENT_JOB
              WITH C.JOB_CODE = FIRST J.JOB_CODE FROM J IN JOBS
              WITH J.JOB_TITLE = 'Company President'
              SORTED C.JOB_CODE;
    END_GET;

    writeln ('Last name is: ', name);

    COMMIT;
    FINISH;
    end.
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