ABAP Select data from SAP table ENT4137 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT4137 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 ENT4137. 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 ENT4137 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_ENT4137 TYPE STANDARD TABLE OF ENT4137,
      WA_ENT4137 TYPE ENT4137,
      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: <ENT4137> TYPE ENT4137.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT4137.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT4137
  INTO TABLE IT_ENT4137.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT4137
*  INTO TABLE @DATA(IT_ENT41372).
*--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_ENT4137 INDEX 1 INTO DATA(WA_ENT41372).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT4137 ASSIGNING <ENT4137>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT4137>-MANDT = 1.
<ENT4137>-LEDNR = 1.
<ENT4137>-OBJNR = 1.
<ENT4137>-GJAHR = 1.
<ENT4137>-VERSN = 1.

ENDLOOP.

LOOP AT IT_ENT4137 INTO WA_ENT4137.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT4137-AUFKZ, sy-vline,
  WA_ENT4137-WSLST, sy-vline,
  WA_ENT4137-WSKAP, sy-vline,
  WA_ENT4137-WSAUS, sy-vline,
  WA_ENT4137-WSTKG, sy-vline,
  WA_ENT4137-WSTKF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT4137 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_ENT4137 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_ENT4137 INTO WA_ENT4137.


*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 LEDNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT4137-LEDNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT4137-LEDNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ENT4137-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT4137-GJAHR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VERSN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT4137-VERSN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT4137-VERSN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TARKZ
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT4137-TARKZ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT4137-TARKZ.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKSTA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT4137-VKSTA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT4137-VKSTA.
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_ENT4137_STR, 
MANDT TYPE STRING,
LEDNR TYPE STRING,
OBJNR TYPE STRING,
GJAHR TYPE STRING,
VERSN TYPE STRING,
AUFKZ TYPE STRING,
WSLST TYPE STRING,
WSKAP TYPE STRING,
WSAUS TYPE STRING,
WSTKG TYPE STRING,
WSTKF TYPE STRING,
FCLST TYPE STRING,
FCKAP TYPE STRING,
FCAUS TYPE STRING,
FCTKG TYPE STRING,
FCTKF TYPE STRING,
LLSTAR TYPE STRING,
KLSTAR TYPE STRING,
RZLSTAR TYPE STRING,
TARKZ TYPE STRING,
VKSTA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT4137_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_ENT4137_STR-MANDT sy-vline 
WA_ENT4137_STR-LEDNR sy-vline 
WA_ENT4137_STR-OBJNR sy-vline 
WA_ENT4137_STR-GJAHR sy-vline 
WA_ENT4137_STR-VERSN sy-vline 
WA_ENT4137_STR-AUFKZ sy-vline 
WA_ENT4137_STR-WSLST sy-vline 
WA_ENT4137_STR-WSKAP sy-vline 
WA_ENT4137_STR-WSAUS sy-vline 
WA_ENT4137_STR-WSTKG sy-vline 
WA_ENT4137_STR-WSTKF sy-vline 
WA_ENT4137_STR-FCLST sy-vline 
WA_ENT4137_STR-FCKAP sy-vline 
WA_ENT4137_STR-FCAUS sy-vline 
WA_ENT4137_STR-FCTKG sy-vline 
WA_ENT4137_STR-FCTKF sy-vline 
WA_ENT4137_STR-LLSTAR sy-vline 
WA_ENT4137_STR-KLSTAR sy-vline 
WA_ENT4137_STR-RZLSTAR sy-vline 
WA_ENT4137_STR-TARKZ sy-vline 
WA_ENT4137_STR-VKSTA sy-vline      INTO ld_text SEPARATED BY SPACE.

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