ABAP Select data from SAP table ENT2128 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT2128 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 ENT2128. 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 ENT2128 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_ENT2128 TYPE STANDARD TABLE OF ENT2128,
      WA_ENT2128 TYPE ENT2128,
      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: <ENT2128> TYPE ENT2128.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT2128.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT2128
  INTO TABLE IT_ENT2128.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT2128
*  INTO TABLE @DATA(IT_ENT21282).
*--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_ENT2128 INDEX 1 INTO DATA(WA_ENT21282).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT2128 ASSIGNING <ENT2128>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT2128>-MANDT = 1.
<ENT2128>-BUKRS = 1.
<ENT2128>-BELNR = 1.
<ENT2128>-GJAHR = 1.
<ENT2128>-BUZEI = 1.

ENDLOOP.

LOOP AT IT_ENT2128 INTO WA_ENT2128.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT2128-UMSKZ, sy-vline,
  WA_ENT2128-ZUMSK, sy-vline,
  WA_ENT2128-FDLEV, sy-vline,
  WA_ENT2128-FDGRP, sy-vline,
  WA_ENT2128-FDWBT, sy-vline,
  WA_ENT2128-FDTAG, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT2128 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_ENT2128 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_ENT2128 INTO WA_ENT2128.


*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 BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-BELNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FDGRP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-FDGRP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-FDGRP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field FDWBT
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-FDWBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-FDWBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-LIFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FILKD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-FILKD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-FILKD.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKFBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-SKFBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-SKFBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field SKNTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-SKNTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-SKNTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field WSKTO
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-WSKTO
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-WSKTO.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field REBZG
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-REBZG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-REBZG.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field REBZJ
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-REBZJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-REBZJ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field BLNBT
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-BLNBT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-BLNBT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ESRRE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-ESRRE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-ESRRE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AU132, internal->external for field REWWR
CALL FUNCTION 'CONVERSION_EXIT_AU132_OUTPUT'
  EXPORTING
    input =                      WA_ENT2128-REWWR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2128-REWWR.
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_ENT2128_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
UMSKZ TYPE STRING,
ZUMSK TYPE STRING,
FDLEV TYPE STRING,
FDGRP TYPE STRING,
FDWBT TYPE STRING,
FDTAG TYPE STRING,
XUMSW TYPE STRING,
XCPDD TYPE STRING,
XUMAN TYPE STRING,
XANET TYPE STRING,
LIFNR TYPE STRING,
FILKD TYPE STRING,
HZUON TYPE STRING,
ZFBDT TYPE STRING,
ZTERM TYPE STRING,
ZBD1T TYPE STRING,
ZBD2T TYPE STRING,
ZBD3T TYPE STRING,
ZBD1P TYPE STRING,
ZBD2P TYPE STRING,
SKFBT TYPE STRING,
SKNTO TYPE STRING,
WSKTO TYPE STRING,
ZLSCH TYPE STRING,
ZLSPR TYPE STRING,
ZBFIX TYPE STRING,
REBZG TYPE STRING,
REBZJ TYPE STRING,
REBZZ TYPE STRING,
REBZT TYPE STRING,
ZOLLT TYPE STRING,
ZOLLD TYPE STRING,
LZBKZ TYPE STRING,
LANDL TYPE STRING,
DIEKZ TYPE STRING,
BLNBT TYPE STRING,
BLNKZ TYPE STRING,
BLNPZ TYPE STRING,
MSCHL TYPE STRING,
MANSP TYPE STRING,
MANST TYPE STRING,
MABER TYPE STRING,
ESRNR TYPE STRING,
ESRRE TYPE STRING,
ESRPZ TYPE STRING,
REWRT TYPE STRING,
REWWR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT2128_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_ENT2128_STR-MANDT sy-vline 
WA_ENT2128_STR-BUKRS sy-vline 
WA_ENT2128_STR-BELNR sy-vline 
WA_ENT2128_STR-GJAHR sy-vline 
WA_ENT2128_STR-BUZEI sy-vline 
WA_ENT2128_STR-UMSKZ sy-vline 
WA_ENT2128_STR-ZUMSK sy-vline 
WA_ENT2128_STR-FDLEV sy-vline 
WA_ENT2128_STR-FDGRP sy-vline 
WA_ENT2128_STR-FDWBT sy-vline 
WA_ENT2128_STR-FDTAG sy-vline 
WA_ENT2128_STR-XUMSW sy-vline 
WA_ENT2128_STR-XCPDD sy-vline 
WA_ENT2128_STR-XUMAN sy-vline 
WA_ENT2128_STR-XANET sy-vline 
WA_ENT2128_STR-LIFNR sy-vline 
WA_ENT2128_STR-FILKD sy-vline 
WA_ENT2128_STR-HZUON sy-vline 
WA_ENT2128_STR-ZFBDT sy-vline 
WA_ENT2128_STR-ZTERM sy-vline 
WA_ENT2128_STR-ZBD1T sy-vline 
WA_ENT2128_STR-ZBD2T sy-vline 
WA_ENT2128_STR-ZBD3T sy-vline 
WA_ENT2128_STR-ZBD1P sy-vline 
WA_ENT2128_STR-ZBD2P sy-vline 
WA_ENT2128_STR-SKFBT sy-vline 
WA_ENT2128_STR-SKNTO sy-vline 
WA_ENT2128_STR-WSKTO sy-vline 
WA_ENT2128_STR-ZLSCH sy-vline 
WA_ENT2128_STR-ZLSPR sy-vline 
WA_ENT2128_STR-ZBFIX sy-vline 
WA_ENT2128_STR-REBZG sy-vline 
WA_ENT2128_STR-REBZJ sy-vline 
WA_ENT2128_STR-REBZZ sy-vline 
WA_ENT2128_STR-REBZT sy-vline 
WA_ENT2128_STR-ZOLLT sy-vline 
WA_ENT2128_STR-ZOLLD sy-vline 
WA_ENT2128_STR-LZBKZ sy-vline 
WA_ENT2128_STR-LANDL sy-vline 
WA_ENT2128_STR-DIEKZ sy-vline 
WA_ENT2128_STR-BLNBT sy-vline 
WA_ENT2128_STR-BLNKZ sy-vline 
WA_ENT2128_STR-BLNPZ sy-vline 
WA_ENT2128_STR-MSCHL sy-vline 
WA_ENT2128_STR-MANSP sy-vline 
WA_ENT2128_STR-MANST sy-vline 
WA_ENT2128_STR-MABER sy-vline 
WA_ENT2128_STR-ESRNR sy-vline 
WA_ENT2128_STR-ESRRE sy-vline 
WA_ENT2128_STR-ESRPZ sy-vline 
WA_ENT2128_STR-REWRT sy-vline 
WA_ENT2128_STR-REWWR sy-vline      INTO ld_text SEPARATED BY SPACE.

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