ABAP Select data from SAP table ENT5881 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT5881 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 ENT5881. 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 ENT5881 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_ENT5881 TYPE STANDARD TABLE OF ENT5881,
      WA_ENT5881 TYPE ENT5881,
      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: <ENT5881> TYPE ENT5881.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT5881.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT5881
  INTO TABLE IT_ENT5881.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT5881
*  INTO TABLE @DATA(IT_ENT58812).
*--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_ENT5881 INDEX 1 INTO DATA(WA_ENT58812).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT5881 ASSIGNING <ENT5881>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT5881>-MANDT = 1.
<ENT5881>-DOKAR = 1.
<ENT5881>-FLDSL = 1.
<ENT5881>-STAEN = 1.
<ENT5881>-PROJB = 1.

ENDLOOP.

LOOP AT IT_ENT5881 INTO WA_ENT5881.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT5881-ALPHN, sy-vline,
  WA_ENT5881-VERVG, sy-vline,
  WA_ENT5881-NUMVG, sy-vline,
  WA_ENT5881-INUMNR, sy-vline,
  WA_ENT5881-ENUMNR, sy-vline,
  WA_ENT5881-AENBL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT5881 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_ENT5881 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_ENT5881 INTO WA_ENT5881.


*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 CVLANG
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ENT5881-CVLANG
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT5881-CVLANG.
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_ENT5881_STR, 
MANDT TYPE STRING,
DOKAR TYPE STRING,
FLDSL TYPE STRING,
STAEN TYPE STRING,
PROJB TYPE STRING,
ALPHN TYPE STRING,
VERVG TYPE STRING,
NUMVG TYPE STRING,
INUMNR TYPE STRING,
ENUMNR TYPE STRING,
AENBL TYPE STRING,
ARCHF TYPE STRING,
ALTDY TYPE STRING,
ADYPROG TYPE STRING,
ZNRPROG TYPE STRING,
FHMDK TYPE STRING,
CVLANG TYPE STRING,
DARTXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT5881_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_ENT5881_STR-MANDT sy-vline 
WA_ENT5881_STR-DOKAR sy-vline 
WA_ENT5881_STR-FLDSL sy-vline 
WA_ENT5881_STR-STAEN sy-vline 
WA_ENT5881_STR-PROJB sy-vline 
WA_ENT5881_STR-ALPHN sy-vline 
WA_ENT5881_STR-VERVG sy-vline 
WA_ENT5881_STR-NUMVG sy-vline 
WA_ENT5881_STR-INUMNR sy-vline 
WA_ENT5881_STR-ENUMNR sy-vline 
WA_ENT5881_STR-AENBL sy-vline 
WA_ENT5881_STR-ARCHF sy-vline 
WA_ENT5881_STR-ALTDY sy-vline 
WA_ENT5881_STR-ADYPROG sy-vline 
WA_ENT5881_STR-ZNRPROG sy-vline 
WA_ENT5881_STR-FHMDK sy-vline 
WA_ENT5881_STR-CVLANG sy-vline 
WA_ENT5881_STR-DARTXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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