Select query taking long time (more then 6 min)

Question

Dear experts,
DATA:IT_CHEQ2 TYPE TABLE OF TY_BSAS,
     WA_CHEQ2 LIKE LINE OF IT_CHEQ2.
DATA : IT_CHEQ3 TYPE STANDARD TABLE OF TY_BSAS WITH HEADER LINE.
TYPES:BEGIN OF TY_BSAS,
       BUKRS TYPE BSAS-BUKRS,
       HKONT TYPE BSAS-HKONT,
       AUGDT TYPE BSAS-AUGDT,
       AUGBL TYPE BSAK-AUGBL,
       ZUONR TYPE BSAK-ZUONR,
       GJAHR TYPE BSAK-GJAHR,
       BELNR TYPE BSAK-BELNR,
       BUZEI TYPE BSAK-BUZEI,
       BUDAT TYPE BSAK-BUDAT,
       XBLNR TYPE BSAK-XBLNR,
       BLART TYPE BSAK-BLART,
       SHKZG TYPE BSAK-SHKZG,
       DMBTR TYPE BSAK-DMBTR,
       WMWST TYPE BSAK-WMWST,
      AUGGJ TYPE BSAK-AUGGJ, " CLEARING FYSICAL YEAR
       OT_TAX TYPE BSAK-DMBTR,
       TDS   TYPE BSAK-DMBTR,
       VAT    TYPE BSAK-DMBTR, "Vat amount
       WCT   TYPE BSAK-DMBTR,
       ADV    TYPE BSAK-DMBTR,  "Advance
       CHAMT TYPE BSAK-DMBTR,
       CHNO  TYPE PAYR-CHECT,
       CHDATE TYPE PAYR-ZALDT,
       DBIT_NOTE TYPE BSAK-DMBTR,
       PAY_ADJ   TYPE BSAK-DMBTR,
       PEND_SES TYPE BSAK-DMBTR, "PENDING SES
       CR_PARTY(50)  TYPE C,
      END OF TY_BSAS.
SELECT BUKRS HKONT AUGDT AUGBL ZUONR GJAHR BELNR BUZEI BUDAT XBLNR BLART SHKZG
                  DMBTR WMWST
                  FROM BSAS INTO " APPENDING
           CORRESPONDING FIELDS OF TABLE IT_CHEQ3
                  FOR ALL ENTRIES IN IT_CHEQ2
                  WHERE AUGBL = IT_CHEQ2-AUGBL and
                    BUKRS = IT_CHEQ2-BUKRS   AND
*                  AUGBL = IT_CHEQ2-AUGBL
                      GJAHR = IT_CHEQ2-GJAHR
                  AND  XBLNR = IT_CHEQ2-XBLNR.
line company code  hkont       augdt               augbl               zuonr              gjahr        belnr                 buzei  budat
1     1018     0012100030     20110831     2100009710     20110831     2011     2100009710     005     20110831
xblnr       blart        shkzg
RA03     KZ         H            37067.00         0.00     2011     0.00     0.00
2     1018     0012100030     20110831     2100009710     20110831     2011     2100009710     006     20110831
     RA03     KZ     H     393850.00     0.00     2011     0.00     0.00
3     1018     0012100030     20110831     2100009710     20110831     2011     2100009710     004     20110831     RA03     KZ     S     723589.13     0.00     2011     0.00     0.00
4     1018     0012100030     20110831     2100009710     20110823     2011     3900001250     001     20110823     RA03     RS     H     712921.13     0.00     2011     0.00     0.00
5     1018     0023200000     20110831     2100009710     20110831     2011     2100009710     008     20110831     RA03     KZ     H     21788.00     0.00     2011     0.00     0.00
6     1018     0023200000     20110831     2100009710     20110831     2011     2100009710     007     20110831     RA03     KZ     H     1162821.00     0.00     2011     0.00     0.00
if i put same entry in se11 for bsas it takes 7 second
and in query takes  more then 6 min ,kindly tell why
help me gurus
regards
victor

Answer 1

Tested point 2.
There is no difference.
REPORT  Z_YZ_SELECT_ORDER.
types: begin of t_orderadm,
         description type CRMT_PROCESS_DESCRIPTION,
         created_at type COMT_CREATED_AT_USR,
         LOGICAL_SYSTEM type CRMT_LOGSYS,
         TEMPLATE_TYPE type CRMT_TEMPLATE_TYPE_DB,
         VERIFY_DATE type CRMT_VERIFY_DATE,
         GUID type CRMT_OBJECT_GUID,
       end of t_orderadm.
types: begin of t_orderadm_1,
         GUID type CRMT_OBJECT_GUID,
         description type CRMT_PROCESS_DESCRIPTION,
         LOGICAL_SYSTEM type CRMT_LOGSYS,
         TEMPLATE_TYPE type CRMT_TEMPLATE_TYPE_DB,
         created_at type COMT_CREATED_AT_USR,
         VERIFY_DATE type CRMT_VERIFY_DATE,
       end of t_orderadm_1.
data: lt_orders type table of t_orderadm,
      lt_orders_1 type table of t_orderadm_1.
select description created_at logical_system template_type verify_date guid
  into table lt_orders
  from crmd_orderadm_h.
select guid description logical_system template_type created_at verify_date
  into table lt_orders_1
  from crmd_orderadm_h.
write 'done'.
First select - mixed order of fields. Response time: 82.155 microseconds for 39380 records selected.
Second select - fields in the order of the table. Response time: 81.061 microseconds for the same 39380 records selected.
Then I changed the order of SELECT statements. I have put first the select with ordered fields, and second - select with mixed order of fields. The runtimes were the following:
Ordered fields - 82.649 microseconds
Mixed order of fields - 80.270 microseconds.
So I'm going to change the Wiki page in order to avoid  in future advices that make no sense.