ABAP Select data from SAP table EKPOLIGHT into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP EKPOLIGHT 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 EKPOLIGHT. 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 EKPOLIGHT 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_EKPOLIGHT TYPE STANDARD TABLE OF EKPOLIGHT,
      WA_EKPOLIGHT TYPE EKPOLIGHT,
      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: <EKPOLIGHT> TYPE EKPOLIGHT.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM EKPOLIGHT
*  INTO TABLE @DATA(IT_EKPOLIGHT2).
*--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_EKPOLIGHT INDEX 1 INTO DATA(WA_EKPOLIGHT2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<EKPOLIGHT>-MANDT = 1.
<EKPOLIGHT>-EBELN = 1.
<EKPOLIGHT>-EBELP = 1.
<EKPOLIGHT>-LOGSY = 1.
<EKPOLIGHT>-BUKRS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_EKPOLIGHT-ERNAM, sy-vline,
  WA_EKPOLIGHT-EKGRP, sy-vline,
  WA_EKPOLIGHT-WAERS, sy-vline,
  WA_EKPOLIGHT-KUFIX, sy-vline,
  WA_EKPOLIGHT-BEDAT, sy-vline,
  WA_EKPOLIGHT-KDATB, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_EKPOLIGHT 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_EKPOLIGHT 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_EKPOLIGHT INTO WA_EKPOLIGHT.


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

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

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

*Conversion exit EXCRT, internal->external for field WKURS
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_EKPOLIGHT-WKURS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKPOLIGHT-WKURS.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field LIFRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_EKPOLIGHT-LIFRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_EKPOLIGHT-LIFRE.
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_EKPOLIGHT_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
LOGSY TYPE STRING,
BUKRS TYPE STRING,
ERNAM TYPE STRING,
EKGRP TYPE STRING,
WAERS TYPE STRING,
KUFIX TYPE STRING,
BEDAT TYPE STRING,
KDATB TYPE STRING,
KDATE TYPE STRING,
INCO1 TYPE STRING,
INCO2 TYPE STRING,
KNUMV TYPE STRING,
LANDS TYPE STRING,
LIFNR TYPE STRING,
BSART TYPE STRING,
LOEKZ TYPE STRING,
ZTERM TYPE STRING,
ZBD1T TYPE STRING,
ZBD2T TYPE STRING,
ZBD3T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2P TYPE STRING,
WKURS TYPE STRING,
FRGRL TYPE STRING,
TXZ01 TYPE STRING,
MATNR TYPE STRING,
EMATN TYPE STRING,
WERKS TYPE STRING,
MATKL TYPE STRING,
MEINS TYPE STRING,
BPRME TYPE STRING,
BPUMZ TYPE STRING,
BPUMN TYPE STRING,
UMREZ TYPE STRING,
UMREN TYPE STRING,
NETPR TYPE STRING,
PEINH TYPE STRING,
NETWR TYPE STRING,
MWSKZ TYPE STRING,
BWTAR TYPE STRING,
BWTTY TYPE STRING,
EREKZ TYPE STRING,
PSTYP TYPE STRING,
KNTTP TYPE STRING,
KZVBR TYPE STRING,
VRTKZ TYPE STRING,
TWRKZ TYPE STRING,
WEPOS TYPE STRING,
WEUNB TYPE STRING,
REPOS TYPE STRING,
WEBRE TYPE STRING,
BSTYP TYPE STRING,
XOBLR TYPE STRING,
TXJCD TYPE STRING,
SOBKZ TYPE STRING,
XERSY TYPE STRING,
BANFN TYPE STRING,
BNFPO TYPE STRING,
MTART TYPE STRING,
RETPO TYPE STRING,
KZBWS TYPE STRING,
LEBRE TYPE STRING,
LIFRE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_EKPOLIGHT_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_EKPOLIGHT_STR-MANDT sy-vline 
WA_EKPOLIGHT_STR-EBELN sy-vline 
WA_EKPOLIGHT_STR-EBELP sy-vline 
WA_EKPOLIGHT_STR-LOGSY sy-vline 
WA_EKPOLIGHT_STR-BUKRS sy-vline 
WA_EKPOLIGHT_STR-ERNAM sy-vline 
WA_EKPOLIGHT_STR-EKGRP sy-vline 
WA_EKPOLIGHT_STR-WAERS sy-vline 
WA_EKPOLIGHT_STR-KUFIX sy-vline 
WA_EKPOLIGHT_STR-BEDAT sy-vline 
WA_EKPOLIGHT_STR-KDATB sy-vline 
WA_EKPOLIGHT_STR-KDATE sy-vline 
WA_EKPOLIGHT_STR-INCO1 sy-vline 
WA_EKPOLIGHT_STR-INCO2 sy-vline 
WA_EKPOLIGHT_STR-KNUMV sy-vline 
WA_EKPOLIGHT_STR-LANDS sy-vline 
WA_EKPOLIGHT_STR-LIFNR sy-vline 
WA_EKPOLIGHT_STR-BSART sy-vline 
WA_EKPOLIGHT_STR-LOEKZ sy-vline 
WA_EKPOLIGHT_STR-ZTERM sy-vline 
WA_EKPOLIGHT_STR-ZBD1T sy-vline 
WA_EKPOLIGHT_STR-ZBD2T sy-vline 
WA_EKPOLIGHT_STR-ZBD3T sy-vline 
WA_EKPOLIGHT_STR-ZBD1P sy-vline 
WA_EKPOLIGHT_STR-ZBD2P sy-vline 
WA_EKPOLIGHT_STR-WKURS sy-vline 
WA_EKPOLIGHT_STR-FRGRL sy-vline 
WA_EKPOLIGHT_STR-TXZ01 sy-vline 
WA_EKPOLIGHT_STR-MATNR sy-vline 
WA_EKPOLIGHT_STR-EMATN sy-vline 
WA_EKPOLIGHT_STR-WERKS sy-vline 
WA_EKPOLIGHT_STR-MATKL sy-vline 
WA_EKPOLIGHT_STR-MEINS sy-vline 
WA_EKPOLIGHT_STR-BPRME sy-vline 
WA_EKPOLIGHT_STR-BPUMZ sy-vline 
WA_EKPOLIGHT_STR-BPUMN sy-vline 
WA_EKPOLIGHT_STR-UMREZ sy-vline 
WA_EKPOLIGHT_STR-UMREN sy-vline 
WA_EKPOLIGHT_STR-NETPR sy-vline 
WA_EKPOLIGHT_STR-PEINH sy-vline 
WA_EKPOLIGHT_STR-NETWR sy-vline 
WA_EKPOLIGHT_STR-MWSKZ sy-vline 
WA_EKPOLIGHT_STR-BWTAR sy-vline 
WA_EKPOLIGHT_STR-BWTTY sy-vline 
WA_EKPOLIGHT_STR-EREKZ sy-vline 
WA_EKPOLIGHT_STR-PSTYP sy-vline 
WA_EKPOLIGHT_STR-KNTTP sy-vline 
WA_EKPOLIGHT_STR-KZVBR sy-vline 
WA_EKPOLIGHT_STR-VRTKZ sy-vline 
WA_EKPOLIGHT_STR-TWRKZ sy-vline 
WA_EKPOLIGHT_STR-WEPOS sy-vline 
WA_EKPOLIGHT_STR-WEUNB sy-vline 
WA_EKPOLIGHT_STR-REPOS sy-vline 
WA_EKPOLIGHT_STR-WEBRE sy-vline 
WA_EKPOLIGHT_STR-BSTYP sy-vline 
WA_EKPOLIGHT_STR-XOBLR sy-vline 
WA_EKPOLIGHT_STR-TXJCD sy-vline 
WA_EKPOLIGHT_STR-SOBKZ sy-vline 
WA_EKPOLIGHT_STR-XERSY sy-vline 
WA_EKPOLIGHT_STR-BANFN sy-vline 
WA_EKPOLIGHT_STR-BNFPO sy-vline 
WA_EKPOLIGHT_STR-MTART sy-vline 
WA_EKPOLIGHT_STR-RETPO sy-vline 
WA_EKPOLIGHT_STR-KZBWS sy-vline 
WA_EKPOLIGHT_STR-LEBRE sy-vline 
WA_EKPOLIGHT_STR-LIFRE sy-vline      INTO ld_text SEPARATED BY SPACE.

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