ABAP Select data from SAP table ENT5537 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT5537 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 ENT5537. 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 ENT5537 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_ENT5537 TYPE STANDARD TABLE OF ENT5537,
      WA_ENT5537 TYPE ENT5537,
      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: <ENT5537> TYPE ENT5537.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT5537.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT5537
  INTO TABLE IT_ENT5537.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT5537
*  INTO TABLE @DATA(IT_ENT55372).
*--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_ENT5537 INDEX 1 INTO DATA(WA_ENT55372).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT5537 ASSIGNING <ENT5537>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT5537>-MANDT = 1.
<ENT5537>-OBJEK = 1.
<ENT5537>-ATINN = 1.
<ENT5537>-ATZHL = 1.
<ENT5537>-MAFID = 1.

ENDLOOP.

LOOP AT IT_ENT5537 INTO WA_ENT5537.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT5537-KLART, sy-vline,
  WA_ENT5537-ATWRT, sy-vline,
  WA_ENT5537-ATFLV, sy-vline,
  WA_ENT5537-ATAWE, sy-vline,
  WA_ENT5537-ATFLB, sy-vline,
  WA_ENT5537-ATAW1, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT5537 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_ENT5537 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_ENT5537 INTO WA_ENT5537.


*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 ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_ENT5537-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT5537-ATINN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ATAWE
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ENT5537-ATAWE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT5537-ATAWE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ATAW1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_ENT5537-ATAW1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT5537-ATAW1.
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_ENT5537_STR, 
MANDT TYPE STRING,
OBJEK TYPE STRING,
ATINN TYPE STRING,
ATZHL TYPE STRING,
MAFID TYPE STRING,
KLART TYPE STRING,
ATWRT TYPE STRING,
ATFLV TYPE STRING,
ATAWE TYPE STRING,
ATFLB TYPE STRING,
ATAW1 TYPE STRING,
ATCOD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT5537_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_ENT5537_STR-MANDT sy-vline 
WA_ENT5537_STR-OBJEK sy-vline 
WA_ENT5537_STR-ATINN sy-vline 
WA_ENT5537_STR-ATZHL sy-vline 
WA_ENT5537_STR-MAFID sy-vline 
WA_ENT5537_STR-KLART sy-vline 
WA_ENT5537_STR-ATWRT sy-vline 
WA_ENT5537_STR-ATFLV sy-vline 
WA_ENT5537_STR-ATAWE sy-vline 
WA_ENT5537_STR-ATFLB sy-vline 
WA_ENT5537_STR-ATAW1 sy-vline 
WA_ENT5537_STR-ATCOD sy-vline      INTO ld_text SEPARATED BY SPACE.

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