ABAP Select data from SAP table CDS_M_POH_EKBEM 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_EKBEM 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_EKBEM. 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_EKBEM 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_EKBEM TYPE STANDARD TABLE OF CDS_M_POH_EKBEM,
      WA_CDS_M_POH_EKBEM TYPE CDS_M_POH_EKBEM,
      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_EKBEM> TYPE CDS_M_POH_EKBEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CDS_M_POH_EKBEM
*  INTO TABLE @DATA(IT_CDS_M_POH_EKBEM2).
*--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_EKBEM INDEX 1 INTO DATA(WA_CDS_M_POH_EKBEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CDS_M_POH_EKBEM>-MANDT = 1.
<CDS_M_POH_EKBEM>-EBELN = 1.
<CDS_M_POH_EKBEM>-EBELP = 1.
<CDS_M_POH_EKBEM>-ZEKKN = 1.
<CDS_M_POH_EKBEM>-VGABE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CDS_M_POH_EKBEM-BEDAT, sy-vline,
  WA_CDS_M_POH_EKBEM-MEINS, sy-vline,
  WA_CDS_M_POH_EKBEM-PSTYP, sy-vline,
  WA_CDS_M_POH_EKBEM-VRTKZ, sy-vline,
  WA_CDS_M_POH_EKBEM-MENGE, sy-vline,
  WA_CDS_M_POH_EKBEM-MENGE_F, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CDS_M_POH_EKBEM 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_EKBEM 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_EKBEM INTO WA_CDS_M_POH_EKBEM.


*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_EKBEM-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDS_M_POH_EKBEM-EBELN.
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_EKBEM-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDS_M_POH_EKBEM-MEINS.
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_EKBEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDS_M_POH_EKBEM-MATNR.
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_EKBEM-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CDS_M_POH_EKBEM-LIFNR.
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_EKBEM_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
ZEKKN TYPE STRING,
VGABE TYPE STRING,
BEDAT TYPE STRING,
MEINS TYPE STRING,
PSTYP TYPE STRING,
VRTKZ TYPE STRING,
MENGE TYPE STRING,
MENGE_F TYPE STRING,
DMBTR TYPE STRING,
AREWR TYPE STRING,
SHKZG TYPE STRING,
ELIKZ TYPE STRING,
MATNR TYPE STRING,
WAERS TYPE STRING,
LIFNR TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
HSWAE TYPE STRING,
BSTYP TYPE STRING,
BSART TYPE STRING,
WERKS TYPE STRING,
FPLNR TYPE STRING,
BEWTP TYPE STRING,
REWRB_OD TYPE STRING,
RTYPE TYPE STRING,
KSCHL TYPE STRING,
TBTKZ TYPE STRING,
SHKZG_FACTOR TYPE STRING,
ZEKKN_FACTOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CDS_M_POH_EKBEM_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_EKBEM_STR-MANDT sy-vline 
WA_CDS_M_POH_EKBEM_STR-EBELN sy-vline 
WA_CDS_M_POH_EKBEM_STR-EBELP sy-vline 
WA_CDS_M_POH_EKBEM_STR-ZEKKN sy-vline 
WA_CDS_M_POH_EKBEM_STR-VGABE sy-vline 
WA_CDS_M_POH_EKBEM_STR-BEDAT sy-vline 
WA_CDS_M_POH_EKBEM_STR-MEINS sy-vline 
WA_CDS_M_POH_EKBEM_STR-PSTYP sy-vline 
WA_CDS_M_POH_EKBEM_STR-VRTKZ sy-vline 
WA_CDS_M_POH_EKBEM_STR-MENGE sy-vline 
WA_CDS_M_POH_EKBEM_STR-MENGE_F sy-vline 
WA_CDS_M_POH_EKBEM_STR-DMBTR sy-vline 
WA_CDS_M_POH_EKBEM_STR-AREWR sy-vline 
WA_CDS_M_POH_EKBEM_STR-SHKZG sy-vline 
WA_CDS_M_POH_EKBEM_STR-ELIKZ sy-vline 
WA_CDS_M_POH_EKBEM_STR-MATNR sy-vline 
WA_CDS_M_POH_EKBEM_STR-WAERS sy-vline 
WA_CDS_M_POH_EKBEM_STR-LIFNR sy-vline 
WA_CDS_M_POH_EKBEM_STR-EKORG sy-vline 
WA_CDS_M_POH_EKBEM_STR-EKGRP sy-vline 
WA_CDS_M_POH_EKBEM_STR-HSWAE sy-vline 
WA_CDS_M_POH_EKBEM_STR-BSTYP sy-vline 
WA_CDS_M_POH_EKBEM_STR-BSART sy-vline 
WA_CDS_M_POH_EKBEM_STR-WERKS sy-vline 
WA_CDS_M_POH_EKBEM_STR-FPLNR sy-vline 
WA_CDS_M_POH_EKBEM_STR-BEWTP sy-vline 
WA_CDS_M_POH_EKBEM_STR-REWRB_OD sy-vline 
WA_CDS_M_POH_EKBEM_STR-RTYPE sy-vline 
WA_CDS_M_POH_EKBEM_STR-KSCHL sy-vline 
WA_CDS_M_POH_EKBEM_STR-TBTKZ sy-vline 
WA_CDS_M_POH_EKBEM_STR-SHKZG_FACTOR sy-vline 
WA_CDS_M_POH_EKBEM_STR-ZEKKN_FACTOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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