ABAP Select data from SAP table ENT6021 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT6021 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 ENT6021. 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 ENT6021 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_ENT6021 TYPE STANDARD TABLE OF ENT6021,
      WA_ENT6021 TYPE ENT6021,
      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: <ENT6021> TYPE ENT6021.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT6021.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT6021
  INTO TABLE IT_ENT6021.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT6021
*  INTO TABLE @DATA(IT_ENT60212).
*--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_ENT6021 INDEX 1 INTO DATA(WA_ENT60212).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT6021 ASSIGNING <ENT6021>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT6021>-MANDT = 1.
<ENT6021>-VKORG = 1.
<ENT6021>-SPRAS = 1.
<ENT6021>-WAERS = 1.
<ENT6021>-BUKRS = 1.

ENDLOOP.

LOOP AT IT_ENT6021 INTO WA_ENT6021.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT6021-ADRNR, sy-vline,
  WA_ENT6021-VKOAU, sy-vline,
  WA_ENT6021-TXNAM_ADR, sy-vline,
  WA_ENT6021-TXNAM_KOP, sy-vline,
  WA_ENT6021-TXNAM_FUS, sy-vline,
  WA_ENT6021-TXNAM_GRU, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT6021 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_ENT6021 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_ENT6021 INTO WA_ENT6021.


*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 ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ENT6021-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT6021-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT6021-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT6021-ADRNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field KUNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT6021-KUNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT6021-KUNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT6021-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT6021-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_ENT6021_STR, 
MANDT TYPE STRING,
VKORG TYPE STRING,
SPRAS TYPE STRING,
WAERS TYPE STRING,
BUKRS TYPE STRING,
ADRNR TYPE STRING,
VKOAU TYPE STRING,
TXNAM_ADR TYPE STRING,
TXNAM_KOP TYPE STRING,
TXNAM_FUS TYPE STRING,
TXNAM_GRU TYPE STRING,
KUNNR TYPE STRING,
BOAVO TYPE STRING,
VKOKL TYPE STRING,
EKORG TYPE STRING,
EKGRP TYPE STRING,
LIFNR TYPE STRING,
WERKS TYPE STRING,
BSART TYPE STRING,
BSTYP TYPE STRING,
BWART TYPE STRING,
LGORT TYPE STRING,
TXNAM_SDB TYPE STRING,
MWSKZ TYPE STRING,
XSTCEG TYPE STRING,
J_1ANUTIME TYPE STRING,
VTEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT6021_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_ENT6021_STR-MANDT sy-vline 
WA_ENT6021_STR-VKORG sy-vline 
WA_ENT6021_STR-SPRAS sy-vline 
WA_ENT6021_STR-WAERS sy-vline 
WA_ENT6021_STR-BUKRS sy-vline 
WA_ENT6021_STR-ADRNR sy-vline 
WA_ENT6021_STR-VKOAU sy-vline 
WA_ENT6021_STR-TXNAM_ADR sy-vline 
WA_ENT6021_STR-TXNAM_KOP sy-vline 
WA_ENT6021_STR-TXNAM_FUS sy-vline 
WA_ENT6021_STR-TXNAM_GRU sy-vline 
WA_ENT6021_STR-KUNNR sy-vline 
WA_ENT6021_STR-BOAVO sy-vline 
WA_ENT6021_STR-VKOKL sy-vline 
WA_ENT6021_STR-EKORG sy-vline 
WA_ENT6021_STR-EKGRP sy-vline 
WA_ENT6021_STR-LIFNR sy-vline 
WA_ENT6021_STR-WERKS sy-vline 
WA_ENT6021_STR-BSART sy-vline 
WA_ENT6021_STR-BSTYP sy-vline 
WA_ENT6021_STR-BWART sy-vline 
WA_ENT6021_STR-LGORT sy-vline 
WA_ENT6021_STR-TXNAM_SDB sy-vline 
WA_ENT6021_STR-MWSKZ sy-vline 
WA_ENT6021_STR-XSTCEG sy-vline 
WA_ENT6021_STR-J_1ANUTIME sy-vline 
WA_ENT6021_STR-VTEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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