ABAP Select data from SAP table DLDQBGB into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DLDQBGB 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 DLDQBGB. 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 DLDQBGB 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_DLDQBGB TYPE STANDARD TABLE OF DLDQBGB,
      WA_DLDQBGB TYPE DLDQBGB,
      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: <DLDQBGB> TYPE DLDQBGB.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DLDQBGB
*  INTO TABLE @DATA(IT_DLDQBGB2).
*--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_DLDQBGB INDEX 1 INTO DATA(WA_DLDQBGB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DLDQBGB>-QBGBGN = 1.
<DLDQBGB>-QBGBGSZ = 1.
<DLDQBGB>-QBGBGDR = 1.
<DLDQBGB>-QBGBGDT = 1.
<DLDQBGB>-QBGBGR1 = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DLDQBGB-QBGBGR2, sy-vline,
  WA_DLDQBGB-QBGBGCT, sy-vline,
  WA_DLDQBGB-QBGBGGT, sy-vline,
  WA_DLDQBGB-QBGBGCK, sy-vline,
  WA_DLDQBGB-QBGBGAS, sy-vline,
  WA_DLDQBGB-QBGBGCS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DLDQBGB 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_DLDQBGB 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_DLDQBGB INTO WA_DLDQBGB.


*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_DLDQBGB_STR, 
QBGBGN TYPE STRING,
QBGBGSZ TYPE STRING,
QBGBGDR TYPE STRING,
QBGBGDT TYPE STRING,
QBGBGR1 TYPE STRING,
QBGBGR2 TYPE STRING,
QBGBGCT TYPE STRING,
QBGBGGT TYPE STRING,
QBGBGCK TYPE STRING,
QBGBGAS TYPE STRING,
QBGBGCS TYPE STRING,
QBGBDUP TYPE STRING,
QBGBGSZ2 TYPE STRING,
QBGBGDR2 TYPE STRING,
QBGBGDT2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DLDQBGB_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_DLDQBGB_STR-QBGBGN sy-vline 
WA_DLDQBGB_STR-QBGBGSZ sy-vline 
WA_DLDQBGB_STR-QBGBGDR sy-vline 
WA_DLDQBGB_STR-QBGBGDT sy-vline 
WA_DLDQBGB_STR-QBGBGR1 sy-vline 
WA_DLDQBGB_STR-QBGBGR2 sy-vline 
WA_DLDQBGB_STR-QBGBGCT sy-vline 
WA_DLDQBGB_STR-QBGBGGT sy-vline 
WA_DLDQBGB_STR-QBGBGCK sy-vline 
WA_DLDQBGB_STR-QBGBGAS sy-vline 
WA_DLDQBGB_STR-QBGBGCS sy-vline 
WA_DLDQBGB_STR-QBGBDUP sy-vline 
WA_DLDQBGB_STR-QBGBGSZ2 sy-vline 
WA_DLDQBGB_STR-QBGBGDR2 sy-vline 
WA_DLDQBGB_STR-QBGBGDT2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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