ABAP Select data from SAP table QDBM into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP QDBM table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to QDBM. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the QDBM table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_QDBM TYPE STANDARD TABLE OF QDBM,
      WA_QDBM TYPE QDBM,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <QDBM> TYPE QDBM.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_QDBM.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM QDBM
  INTO TABLE IT_QDBM.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM QDBM
*  INTO TABLE @DATA(IT_QDBM2).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_QDBM INDEX 1 INTO DATA(WA_QDBM2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_QDBM ASSIGNING <QDBM>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<QDBM>-MANDT = 1.
<QDBM>-BEWERTMOD = 1.
<QDBM>-KZATTRFE = 1.
<QDBM>-KZATTRFZ = 1.
<QDBM>-KZVARS = 1.

ENDLOOP.

LOOP AT IT_QDBM INTO WA_QDBM.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_QDBM-KZVARSIGM, sy-vline,
  WA_QDBM-KZCOD, sy-vline,
  WA_QDBM-KZMAN, sy-vline,
  WA_QDBM-KZQRK, sy-vline,
  WA_QDBM-KZAUS, sy-vline,
  WA_QDBM-KZCNULL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_QDBM you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_QDBM TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_QDBM INTO WA_QDBM.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_QDBM_STR, 
MANDT TYPE STRING,
BEWERTMOD TYPE STRING,
KZATTRFE TYPE STRING,
KZATTRFZ TYPE STRING,
KZVARS TYPE STRING,
KZVARSIGM TYPE STRING,
KZCOD TYPE STRING,
KZMAN TYPE STRING,
KZQRK TYPE STRING,
KZAUS TYPE STRING,
KZCNULL TYPE STRING,
KZNVWBM TYPE STRING,
FBKEY TYPE STRING,
KZKNULL TYPE STRING,
KZOHNEBEWP TYPE STRING,
ERSTELLER TYPE STRING,
AENDERER TYPE STRING,
ERSTELLDAT TYPE STRING,
AENDERDAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_QDBM_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_QDBM_STR-MANDT sy-vline 
WA_QDBM_STR-BEWERTMOD sy-vline 
WA_QDBM_STR-KZATTRFE sy-vline 
WA_QDBM_STR-KZATTRFZ sy-vline 
WA_QDBM_STR-KZVARS sy-vline 
WA_QDBM_STR-KZVARSIGM sy-vline 
WA_QDBM_STR-KZCOD sy-vline 
WA_QDBM_STR-KZMAN sy-vline 
WA_QDBM_STR-KZQRK sy-vline 
WA_QDBM_STR-KZAUS sy-vline 
WA_QDBM_STR-KZCNULL sy-vline 
WA_QDBM_STR-KZNVWBM sy-vline 
WA_QDBM_STR-FBKEY sy-vline 
WA_QDBM_STR-KZKNULL sy-vline 
WA_QDBM_STR-KZOHNEBEWP sy-vline 
WA_QDBM_STR-ERSTELLER sy-vline 
WA_QDBM_STR-AENDERER sy-vline 
WA_QDBM_STR-ERSTELLDAT sy-vline 
WA_QDBM_STR-AENDERDAT sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.