ABAP Select data from SAP table ENT5840 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT5840 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 ENT5840. 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 ENT5840 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_ENT5840 TYPE STANDARD TABLE OF ENT5840,
      WA_ENT5840 TYPE ENT5840,
      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: <ENT5840> TYPE ENT5840.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT5840.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT5840
  INTO TABLE IT_ENT5840.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT5840
*  INTO TABLE @DATA(IT_ENT58402).
*--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_ENT5840 INDEX 1 INTO DATA(WA_ENT58402).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT5840 ASSIGNING <ENT5840>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT5840>-MANDT = 1.
<ENT5840>-AUFPL = 1.
<ENT5840>-PZLFH = 1.
<ENT5840>-LOEKZ = 1.
<ENT5840>-PARKZ = 1.

ENDLOOP.

LOOP AT IT_ENT5840 INTO WA_ENT5840.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT5840-DATUI, sy-vline,
  WA_ENT5840-USERI, sy-vline,
  WA_ENT5840-DATUC, sy-vline,
  WA_ENT5840-USERC, sy-vline,
  WA_ENT5840-TXTSP, sy-vline,
  WA_ENT5840-KTSCH, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT5840 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_ENT5840 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_ENT5840 INTO WA_ENT5840.


*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 TXTSP
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ENT5840-TXTSP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT5840-TXTSP.
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_ENT5840_STR, 
MANDT TYPE STRING,
AUFPL TYPE STRING,
PZLFH TYPE STRING,
LOEKZ TYPE STRING,
PARKZ TYPE STRING,
DATUI TYPE STRING,
USERI TYPE STRING,
DATUC TYPE STRING,
USERC TYPE STRING,
TXTSP TYPE STRING,
KTSCH TYPE STRING,
TXTZ1 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT5840_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_ENT5840_STR-MANDT sy-vline 
WA_ENT5840_STR-AUFPL sy-vline 
WA_ENT5840_STR-PZLFH sy-vline 
WA_ENT5840_STR-LOEKZ sy-vline 
WA_ENT5840_STR-PARKZ sy-vline 
WA_ENT5840_STR-DATUI sy-vline 
WA_ENT5840_STR-USERI sy-vline 
WA_ENT5840_STR-DATUC sy-vline 
WA_ENT5840_STR-USERC sy-vline 
WA_ENT5840_STR-TXTSP sy-vline 
WA_ENT5840_STR-KTSCH sy-vline 
WA_ENT5840_STR-TXTZ1 sy-vline      INTO ld_text SEPARATED BY SPACE.

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