ABAP Select data from SAP table VWB2_EKKO_EKPO_1 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP VWB2_EKKO_EKPO_1 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 VWB2_EKKO_EKPO_1. 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 VWB2_EKKO_EKPO_1 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_VWB2_EKKO_EKPO_1 TYPE STANDARD TABLE OF VWB2_EKKO_EKPO_1,
      WA_VWB2_EKKO_EKPO_1 TYPE VWB2_EKKO_EKPO_1,
      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: <VWB2_EKKO_EKPO_1> TYPE VWB2_EKKO_EKPO_1.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_VWB2_EKKO_EKPO_1.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM VWB2_EKKO_EKPO_1
  INTO TABLE IT_VWB2_EKKO_EKPO_1.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VWB2_EKKO_EKPO_1
*  INTO TABLE @DATA(IT_VWB2_EKKO_EKPO_12).
*--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_VWB2_EKKO_EKPO_1 INDEX 1 INTO DATA(WA_VWB2_EKKO_EKPO_12).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_VWB2_EKKO_EKPO_1 ASSIGNING <VWB2_EKKO_EKPO_1>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VWB2_EKKO_EKPO_1>-MANDT = 1.
<VWB2_EKKO_EKPO_1>-EBELN = 1.
<VWB2_EKKO_EKPO_1>-EBELP = 1.
<VWB2_EKKO_EKPO_1>-BUKRS = 1.
<VWB2_EKKO_EKPO_1>-LIFNR = 1.

ENDLOOP.

LOOP AT IT_VWB2_EKKO_EKPO_1 INTO WA_VWB2_EKKO_EKPO_1.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VWB2_EKKO_EKPO_1-WAERS, sy-vline,
  WA_VWB2_EKKO_EKPO_1-EKORG, sy-vline,
  WA_VWB2_EKKO_EKPO_1-EKGRP, sy-vline,
  WA_VWB2_EKKO_EKPO_1-BEDAT, sy-vline,
  WA_VWB2_EKKO_EKPO_1-LLIEF, sy-vline,
  WA_VWB2_EKKO_EKPO_1-BSART, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VWB2_EKKO_EKPO_1 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_VWB2_EKKO_EKPO_1 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_VWB2_EKKO_EKPO_1 INTO WA_VWB2_EKKO_EKPO_1.


*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_VWB2_EKKO_EKPO_1-EBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-EBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LLIEF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-LLIEF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-LLIEF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KOLIF
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-KOLIF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-KOLIF.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field PUNEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-PUNEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-PUNEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-GEWEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-GEWEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VOLEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-VOLEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-VOLEH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AKTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-AKTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-AKTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PRCTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-PRCTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-PRCTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field SATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-SATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-SATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field PS_PSP_PNR
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_VWB2_EKKO_EKPO_1-PS_PSP_PNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VWB2_EKKO_EKPO_1-PS_PSP_PNR.
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_VWB2_EKKO_EKPO_1_STR, 
MANDT TYPE STRING,
EBELN TYPE STRING,
EBELP TYPE STRING,
BUKRS TYPE STRING,
LIFNR TYPE STRING,
WAERS TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
BEDAT TYPE STRING,
LLIEF TYPE STRING,
BSART TYPE STRING,
STCEG TYPE STRING,
MATNR TYPE STRING,
WERKS TYPE STRING,
MATKL TYPE STRING,
EKKOL TYPE STRING,
PRDAT TYPE STRING,
MENGE TYPE STRING,
MEINS TYPE STRING,
NETWR TYPE STRING,
BRTWR TYPE STRING,
MWSKZ TYPE STRING,
TXJCD TYPE STRING,
KOLIF TYPE STRING,
LTSNR TYPE STRING,
MTART TYPE STRING,
BONBA TYPE STRING,
KZWI1 TYPE STRING,
KZWI2 TYPE STRING,
KZWI3 TYPE STRING,
KZWI4 TYPE STRING,
KZWI5 TYPE STRING,
KZWI6 TYPE STRING,
ANZPU TYPE STRING,
PUNEI TYPE STRING,
NTGEW TYPE STRING,
BRGEW TYPE STRING,
GEWEI TYPE STRING,
VOLUM TYPE STRING,
VOLEH TYPE STRING,
AKTNR TYPE STRING,
RETPO TYPE STRING,
GSBER TYPE STRING,
PRCTR TYPE STRING,
TXDAT_FROM TYPE STRING,
SATNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
BUPLA TYPE STRING,
TAX_COUNTRY TYPE STRING,
STCEG_L TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VWB2_EKKO_EKPO_1_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_VWB2_EKKO_EKPO_1_STR-MANDT sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-EBELN sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-EBELP sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-BUKRS sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-LIFNR sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-WAERS sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-EKORG sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-EKGRP sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-BEDAT sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-LLIEF sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-BSART sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-STCEG sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-MATNR sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-WERKS sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-MATKL sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-EKKOL sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-PRDAT sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-MENGE sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-MEINS sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-NETWR sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-BRTWR sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-MWSKZ sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-TXJCD sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-KOLIF sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-LTSNR sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-MTART sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-BONBA sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-KZWI1 sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-KZWI2 sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-KZWI3 sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-KZWI4 sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-KZWI5 sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-KZWI6 sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-ANZPU sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-PUNEI sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-NTGEW sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-BRGEW sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-GEWEI sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-VOLUM sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-VOLEH sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-AKTNR sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-RETPO sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-GSBER sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-PRCTR sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-TXDAT_FROM sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-SATNR sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-PS_PSP_PNR sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-BUPLA sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-TAX_COUNTRY sy-vline 
WA_VWB2_EKKO_EKPO_1_STR-STCEG_L sy-vline      INTO ld_text SEPARATED BY SPACE.

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