ABAP Select data from SAP table CDS_M_POH_EKBZ into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDS_M_POH_EKBZ
*  INTO TABLE @DATA(IT_CDS_M_POH_EKBZ2).
*--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_CDS_M_POH_EKBZ INDEX 1 INTO DATA(WA_CDS_M_POH_EKBZ2).


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

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

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDS_M_POH_EKBZ-VGABE, sy-vline,
  WA_CDS_M_POH_EKBZ-GJAHR, sy-vline,
  WA_CDS_M_POH_EKBZ-BELNR, sy-vline,
  WA_CDS_M_POH_EKBZ-BUZEI, sy-vline,
  WA_CDS_M_POH_EKBZ-BEDAT, sy-vline,
  WA_CDS_M_POH_EKBZ-MEINS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CDS_M_POH_EKBZ 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_CDS_M_POH_EKBZ 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_CDS_M_POH_EKBZ INTO WA_CDS_M_POH_EKBZ.


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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_CDS_M_POH_EKBZ-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDS_M_POH_EKBZ-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_CDS_M_POH_EKBZ-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDS_M_POH_EKBZ-MATNR.
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_CDS_M_POH_EKBZ_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
STUNR TYPE STRING,
ZAEHK TYPE STRING,
VGABE TYPE STRING,
GJAHR TYPE STRING,
BELNR TYPE STRING,
BUZEI TYPE STRING,
BEDAT TYPE STRING,
MEINS TYPE STRING,
PSTYP TYPE STRING,
RETPO TYPE STRING,
BEWTP TYPE STRING,
MENGE TYPE STRING,
SHKZG TYPE STRING,
DMBTR TYPE STRING,
AREWR TYPE STRING,
SHKKO TYPE STRING,
TBTKZ TYPE STRING,
LIFNR TYPE STRING,
EKGRP TYPE STRING,
EKORG TYPE STRING,
MATNR TYPE STRING,
ELIKZ TYPE STRING,
BSTYP TYPE STRING,
BSART TYPE STRING,
WERKS TYPE STRING,
FPLNR TYPE STRING,
HSWAE TYPE STRING,
REWRB_OD TYPE STRING,
RTYPE TYPE STRING,
ZEKKN TYPE STRING,
MENGE_F TYPE STRING,
SHKZG_FACTOR TYPE STRING,
SHKZG_HELP TYPE STRING,
SHKZG_2 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CDS_M_POH_EKBZ_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_CDS_M_POH_EKBZ_STR-MANDT sy-vline 
WA_CDS_M_POH_EKBZ_STR-EBELN sy-vline 
WA_CDS_M_POH_EKBZ_STR-EBELP sy-vline 
WA_CDS_M_POH_EKBZ_STR-STUNR sy-vline 
WA_CDS_M_POH_EKBZ_STR-ZAEHK sy-vline 
WA_CDS_M_POH_EKBZ_STR-VGABE sy-vline 
WA_CDS_M_POH_EKBZ_STR-GJAHR sy-vline 
WA_CDS_M_POH_EKBZ_STR-BELNR sy-vline 
WA_CDS_M_POH_EKBZ_STR-BUZEI sy-vline 
WA_CDS_M_POH_EKBZ_STR-BEDAT sy-vline 
WA_CDS_M_POH_EKBZ_STR-MEINS sy-vline 
WA_CDS_M_POH_EKBZ_STR-PSTYP sy-vline 
WA_CDS_M_POH_EKBZ_STR-RETPO sy-vline 
WA_CDS_M_POH_EKBZ_STR-BEWTP sy-vline 
WA_CDS_M_POH_EKBZ_STR-MENGE sy-vline 
WA_CDS_M_POH_EKBZ_STR-SHKZG sy-vline 
WA_CDS_M_POH_EKBZ_STR-DMBTR sy-vline 
WA_CDS_M_POH_EKBZ_STR-AREWR sy-vline 
WA_CDS_M_POH_EKBZ_STR-SHKKO sy-vline 
WA_CDS_M_POH_EKBZ_STR-TBTKZ sy-vline 
WA_CDS_M_POH_EKBZ_STR-LIFNR sy-vline 
WA_CDS_M_POH_EKBZ_STR-EKGRP sy-vline 
WA_CDS_M_POH_EKBZ_STR-EKORG sy-vline 
WA_CDS_M_POH_EKBZ_STR-MATNR sy-vline 
WA_CDS_M_POH_EKBZ_STR-ELIKZ sy-vline 
WA_CDS_M_POH_EKBZ_STR-BSTYP sy-vline 
WA_CDS_M_POH_EKBZ_STR-BSART sy-vline 
WA_CDS_M_POH_EKBZ_STR-WERKS sy-vline 
WA_CDS_M_POH_EKBZ_STR-FPLNR sy-vline 
WA_CDS_M_POH_EKBZ_STR-HSWAE sy-vline 
WA_CDS_M_POH_EKBZ_STR-REWRB_OD sy-vline 
WA_CDS_M_POH_EKBZ_STR-RTYPE sy-vline 
WA_CDS_M_POH_EKBZ_STR-ZEKKN sy-vline 
WA_CDS_M_POH_EKBZ_STR-MENGE_F sy-vline 
WA_CDS_M_POH_EKBZ_STR-SHKZG_FACTOR sy-vline 
WA_CDS_M_POH_EKBZ_STR-SHKZG_HELP sy-vline 
WA_CDS_M_POH_EKBZ_STR-SHKZG_2 sy-vline      INTO ld_text SEPARATED BY SPACE.

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