Workbench Query Using Complex Variables (1 reply)

file: Workbench Query Using Complex Variables


The following two EXAMPLES (QUERY-ONE(a & b) and QUERY-TWO) represent results
as used in MySQL WORKBENCH 6.3 (Version 6.3.6 Build 511 CE (64 bits)

QUERY-ONE-a WORKS with expected results when @org1 is NOT Used in query.
NOTE: "... AND cl_org_cd NOT IN (3,4,5,6,7,8,9) ); "

QUERY-ONE-b DOES NOT WORK with expected results when @org1 is Used in query.
NOTE: "... AND cl_org_cd NOT IN (@org1) ); "


The PROBLEM is "What is the correct construction of QUERY-ONE-a using php and or
MySQL Workbench to obtain a correct result when using @org1 variable
as illustrated in QUERY-ONE-b?

/*  QUERY-ONE-a  */
/*-------------------------------------*/
/*  Workbench WORKS - @org1 NOT Used   */
/* rows to EXCLUDE WHERE @org1= 1 or 2 */
/*-------------------------------------*/
SET @date = '2015-01-01';
SET @org1 = '(3,4,5,6,7,8,9)';

DROP TABLE IF EXISTS tmp_class;

CREATE TABLE IF NOT EXISTS tmp_class AS SELECT * FROM ce_class
    WHERE cl_date >= @date;

SELECT cl_id, cl_date, cl_classname, cl_instructor1, cl_org_cd FROM tmp_class A
    WHERE NOT EXISTS
       (SELECT cl_org_cd FROM tmp_class B WHERE A.cl_id = B.cl_id
          AND cl_org_cd NOT IN (3,4,5,6,7,8,9) );

    /*-------------------------------------------------------------*/
    /* Workbench Returns: Expected (4) records cl_org_cd = 4,3,3,9 */
    /*           cl_org_cd = '4'   1 record  - OK                  */
    /*           cl_org_cd = '3'   2 records - OK                  */
    /*           cl_org_cd = '9'   1 record  - OK                  */
    /* EXCLUDES  cl_org_cd = '1'  24 records - OK                  */
    /* EXCLUDES  cl_org_cd = '2' 117 records - OK                  */
    /*-------------------------------------------------------------*/

/*  QUERY-ONE-b  */
/*---------------------------------------*/
/*  Workbench DOESEN'T WORK - @org1 Used */
/*---------------------------------------*/
SET @date = '2015-01-01';
SET @org1 = '3,4,5,6,7,8,9';

DROP TABLE IF EXISTS tmp_class;

CREATE TABLE IF NOT EXISTS tmp_class AS SELECT * FROM ce_class
    WHERE cl_date >= @date;

SELECT cl_id, cl_date, cl_classname, cl_instructor1, cl_org_cd FROM tmp_class A
    WHERE NOT EXISTS
       (SELECT cl_org_cd FROM tmp_class B WHERE A.cl_id = B.cl_id
          AND cl_org_cd NOT IN (@org1) );
          
    /*-------------------------------------------------------------*/
    /* Workbench Returns: Unexpected (2) records where             */
    /*           cl_org_cd = '3'   2 records - OK                  */
    /* MISSED    cl_org_cd = '4'   1 record  - WRONG               */
    /* MISSED    cl_org_cd = '9'   1 record  - WRONG               */
    /* EXCLUDES  cl_org_cd = '1'  24 records - OK                  */
    /* EXCLUDES  cl_org_cd = '2' 117 records - OK                  */
    /*-------------------------------------------------------------*/

/*  QUERY-TWO  */
/*-----------------------------------*/
/*  Workbench  WORKS - @org1 Used    */
/*  EXCLUDE all rows where org1 = 2; */
/*-----------------------------------*/

SET @date = '2015-01-01';
SET @org1 = '2';    /*  rows to EXCLUDE    */

DROP TABLE IF EXISTS tmp_class;

CREATE TABLE IF NOT EXISTS tmp_class AS SELECT * FROM ce_class
    WHERE cl_date >= @date;
SELECT * FROM tmp_class WHERE cl_date >= @date AND cl_org_cd != @org1;

    /*-------------------------------------------------------------*/
    /* Workbench Returns: CORRECT (28) records where returned      */
    /*           cl_org_cd = '1'  24 records - OK                  */
    /*           cl_org_cd = '3'   2 record  - OK                  */
    /*           cl_org_cd = '4'   1 record  - OK                  */
    /*           cl_org_cd = '9'   1 record  - OK                  */
    /*                                                             */
    /* EXCLUDES  cl_org_cd = '2' 117 records - OK                  */
    /*-------------------------------------------------------------*/

If you have an answer - Please respond to wimbre042@gmail.com
Thanks