ABAP Select data from SAP table HZEKBES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM HZEKBES
*  INTO TABLE @DATA(IT_HZEKBES2).
*--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_HZEKBES INDEX 1 INTO DATA(WA_HZEKBES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<HZEKBES>-EBELN = 1.
<HZEKBES>-EBELP = 1.
<HZEKBES>-STUNR = 1.
<HZEKBES>-ZAEHK = 1.
<HZEKBES>-WEMNG = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_HZEKBES-WEWRT, sy-vline,
  WA_HZEKBES-WEWWR, sy-vline,
  WA_HZEKBES-REMNG, sy-vline,
  WA_HZEKBES-REWRT, sy-vline,
  WA_HZEKBES-REWWR, sy-vline,
  WA_HZEKBES-AREWR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_HZEKBES 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_HZEKBES 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_HZEKBES INTO WA_HZEKBES.


*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.

*Conversion exit ALPHA, internal->external for field EBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_HZEKBES-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_HZEKBES-EBELN.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

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

TYPES: BEGIN OF T_HZEKBES_STR, 
EBELN TYPE STRING,
EBELP TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
WEMNG TYPE STRING,
WEWRT TYPE STRING,
WEWWR TYPE STRING,
REMNG TYPE STRING,
REWRT TYPE STRING,
REWWR TYPE STRING,
AREWR TYPE STRING,
AREFW TYPE STRING,
ANZAL TYPE STRING,
WEMNG_OLD TYPE STRING,
REWAE TYPE STRING,
WAMNG TYPE STRING,
WAWRT TYPE STRING,
WAWWR TYPE STRING,
REMNG_POP TYPE STRING,
REWRT_POP TYPE STRING,
REWWR_POP TYPE STRING,
AREWR_POP TYPE STRING,
AREFW_POP TYPE STRING,
REMNG_F TYPE STRING,
BPREM_F TYPE STRING,
REWRB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_HZEKBES_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_HZEKBES_STR-EBELN sy-vline 
WA_HZEKBES_STR-EBELP sy-vline 
WA_HZEKBES_STR-STUNR sy-vline 
WA_HZEKBES_STR-ZAEHK sy-vline 
WA_HZEKBES_STR-WEMNG sy-vline 
WA_HZEKBES_STR-WEWRT sy-vline 
WA_HZEKBES_STR-WEWWR sy-vline 
WA_HZEKBES_STR-REMNG sy-vline 
WA_HZEKBES_STR-REWRT sy-vline 
WA_HZEKBES_STR-REWWR sy-vline 
WA_HZEKBES_STR-AREWR sy-vline 
WA_HZEKBES_STR-AREFW sy-vline 
WA_HZEKBES_STR-ANZAL sy-vline 
WA_HZEKBES_STR-WEMNG_OLD sy-vline 
WA_HZEKBES_STR-REWAE sy-vline 
WA_HZEKBES_STR-WAMNG sy-vline 
WA_HZEKBES_STR-WAWRT sy-vline 
WA_HZEKBES_STR-WAWWR sy-vline 
WA_HZEKBES_STR-REMNG_POP sy-vline 
WA_HZEKBES_STR-REWRT_POP sy-vline 
WA_HZEKBES_STR-REWWR_POP sy-vline 
WA_HZEKBES_STR-AREWR_POP sy-vline 
WA_HZEKBES_STR-AREFW_POP sy-vline 
WA_HZEKBES_STR-REMNG_F sy-vline 
WA_HZEKBES_STR-BPREM_F sy-vline 
WA_HZEKBES_STR-REWRB sy-vline      INTO ld_text SEPARATED BY SPACE.

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