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Thursday, June 14, 2012

SRW Example

FUNCTION CREATETAB RETURN BOOLEAN IS
BEGIN
SRW.DO_SQL('CREATE TABLE CHECK (EMPNO NUMBER NOT NULL
            PRIMARY KEY, SAL NUMBER (10,2)) PCTFREE 5
            PCTUSED 75');
RETURN(TRUE);
EXCEPTION
WHEN SRW.DO_SQL_FAILURE THEN
 SRW.MESSAGE(100, 'ERROR WHILE CREATING CHECK TABLE.');
 SRW.MESSAGE(50, 'REPORT WAS STOPPED BEFORE THE RUNTIME
 PARAMETER FORM.');
 RAISE SRW.PROGRAM_ABORT;
END;
/* Suppose you want to create a "table of contents" by getting the
** first character of a column's value, and page number on which its
** field fires to print.  Assume that you want to put the "table of contents"
** into a table named SHIP.  You could write the following construct:
*/

DECLARE
  PAGE_NO      NUMBER;
  PAGE_FOR     INDEX NUMBER;
  SORT_CHAR    CHAR(1);
  CMD_LINE     CHAR(200);
BEGIN
  SORT_CHAR := :SORT_NAME ;
  IF :CALLED = 'Y' THEN
    SRW.GET_PAGE_NUM(PAGE_FOR_INDEX);
    SRW.USER_EXIT('RWECOP PAGE_FOR_INDEX
                   P_START_PAGENO');
    SRW.MESSAGE(2,TO_CHAR(:P_START_PAGENO));
  END IF;
  SRW.GET_PAGE_NUM(PAGE_NO);
  CMD_LINE := 'INSERT INTO SHIP VALUES
       ('''||SORT_CHAR||''','||TO_CHAR(PAGE_NO)||')';
  SRW.MESSAGE(2,CMD_LINE);
  SRW.DO_SQL(CMD_LINE);
  COMMIT;
EXCEPTION
  WHEN DUP_VAL_ON_INDEX THEN
       NULL;
  WHEN SRW.DO_SQL_FAILURE THEN
       SRW.MESSAGE(1,'FAILED TO INSERT ROW INTO SHIP
TABLE');
  WHEN OTHERS THEN
       COMMIT;
END;

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