ABAP Select data from SAP table EKPB into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EKPB
*  INTO TABLE @DATA(IT_EKPB2).
*--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_EKPB INDEX 1 INTO DATA(WA_EKPB2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EKPB>-MANDT = 1.
<EKPB>-EBELN = 1.
<EKPB>-EBELP = 1.
<EKPB>-ZEKPB = 1.
<EKPB>-LOEKZ = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EKPB-STATU, sy-vline,
  WA_EKPB-AEDAT, sy-vline,
  WA_EKPB-TXZ01, sy-vline,
  WA_EKPB-MATNR, sy-vline,
  WA_EKPB-WERKS, sy-vline,
  WA_EKPB-LGORT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EKPB 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_EKPB 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_EKPB INTO WA_EKPB.


*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_EKPB-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKPB-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_EKPB-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKPB-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EKPB-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKPB-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field LAGME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_EKPB-LAGME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKPB-LAGME.
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_EKPB_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ZEKPB TYPE STRING,
LOEKZ TYPE STRING,
STATU TYPE STRING,
AEDAT TYPE STRING,
TXZ01 TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
LAGME TYPE STRING,
UMAUZ TYPE STRING,
UMAUN TYPE STRING,
FMENG TYPE STRING,
FRGDT TYPE STRING,
LVRMG TYPE STRING,
LVRWR TYPE STRING,
LVLFM TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EKPB_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_EKPB_STR-MANDT sy-vline 
WA_EKPB_STR-EBELN sy-vline 
WA_EKPB_STR-EBELP sy-vline 
WA_EKPB_STR-ZEKPB sy-vline 
WA_EKPB_STR-LOEKZ sy-vline 
WA_EKPB_STR-STATU sy-vline 
WA_EKPB_STR-AEDAT sy-vline 
WA_EKPB_STR-TXZ01 sy-vline 
WA_EKPB_STR-MATNR sy-vline 
WA_EKPB_STR-WERKS sy-vline 
WA_EKPB_STR-LGORT sy-vline 
WA_EKPB_STR-MENGE sy-vline 
WA_EKPB_STR-MEINS sy-vline 
WA_EKPB_STR-LAGME sy-vline 
WA_EKPB_STR-UMAUZ sy-vline 
WA_EKPB_STR-UMAUN sy-vline 
WA_EKPB_STR-FMENG sy-vline 
WA_EKPB_STR-FRGDT sy-vline 
WA_EKPB_STR-LVRMG sy-vline 
WA_EKPB_STR-LVRWR sy-vline 
WA_EKPB_STR-LVLFM sy-vline      INTO ld_text SEPARATED BY SPACE.

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