ABAP Select data from SAP table ENT7537 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT7537 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 ENT7537. 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 ENT7537 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_ENT7537 TYPE STANDARD TABLE OF ENT7537,
      WA_ENT7537 TYPE ENT7537,
      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: <ENT7537> TYPE ENT7537.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT7537.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT7537
  INTO TABLE IT_ENT7537.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT7537
*  INTO TABLE @DATA(IT_ENT75372).
*--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_ENT7537 INDEX 1 INTO DATA(WA_ENT75372).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT7537 ASSIGNING <ENT7537>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT7537>-MANDT = 1.
<ENT7537>-EINRI = 1.
<ENT7537>-FALNR = 1.
<ENT7537>-FALAR = 1.
<ENT7537>-PATNR = 1.

ENDLOOP.

LOOP AT IT_ENT7537 INTO WA_ENT7537.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT7537-BEKAT, sy-vline,
  WA_ENT7537-ABRKZ, sy-vline,
  WA_ENT7537-SICHV, sy-vline,
  WA_ENT7537-EINZG, sy-vline,
  WA_ENT7537-KZTXT, sy-vline,
  WA_ENT7537-KUALF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT7537 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_ENT7537 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_ENT7537 INTO WA_ENT7537.


*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 EINRI
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7537-EINRI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7537-EINRI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field FALNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7537-FALNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7537-FALNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PATNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7537-PATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7537-PATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BEKAT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7537-BEKAT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7537-BEKAT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field EAUFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT7537-EAUFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT7537-EAUFN.
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_ENT7537_STR, 
MANDT TYPE STRING,
EINRI TYPE STRING,
FALNR TYPE STRING,
FALAR TYPE STRING,
PATNR TYPE STRING,
BEKAT TYPE STRING,
ABRKZ TYPE STRING,
SICHV TYPE STRING,
EINZG TYPE STRING,
KZTXT TYPE STRING,
KUALF TYPE STRING,
BEWLF TYPE STRING,
DGNLF TYPE STRING,
PGRLF TYPE STRING,
INFKZ TYPE STRING,
STATU TYPE STRING,
FZIFF TYPE STRING,
NOTAN TYPE STRING,
KRZAN TYPE STRING,
ENDAT TYPE STRING,
ENTIM TYPE STRING,
FGTYP TYPE STRING,
KZKOM TYPE STRING,
KOMTX TYPE STRING,
KOLTX TYPE STRING,
ARBUN TYPE STRING,
ENDDT TYPE STRING,
FSPER TYPE STRING,
ERDAT TYPE STRING,
ERUSR TYPE STRING,
UPDAT TYPE STRING,
UPUSR TYPE STRING,
STORN TYPE STRING,
STUSR TYPE STRING,
STDAT TYPE STRING,
VORPT TYPE STRING,
BEGDT TYPE STRING,
STASP TYPE STRING,
KV_KZ TYPE STRING,
EAUFN TYPE STRING,
KVUEB TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT7537_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_ENT7537_STR-MANDT sy-vline 
WA_ENT7537_STR-EINRI sy-vline 
WA_ENT7537_STR-FALNR sy-vline 
WA_ENT7537_STR-FALAR sy-vline 
WA_ENT7537_STR-PATNR sy-vline 
WA_ENT7537_STR-BEKAT sy-vline 
WA_ENT7537_STR-ABRKZ sy-vline 
WA_ENT7537_STR-SICHV sy-vline 
WA_ENT7537_STR-EINZG sy-vline 
WA_ENT7537_STR-KZTXT sy-vline 
WA_ENT7537_STR-KUALF sy-vline 
WA_ENT7537_STR-BEWLF sy-vline 
WA_ENT7537_STR-DGNLF sy-vline 
WA_ENT7537_STR-PGRLF sy-vline 
WA_ENT7537_STR-INFKZ sy-vline 
WA_ENT7537_STR-STATU sy-vline 
WA_ENT7537_STR-FZIFF sy-vline 
WA_ENT7537_STR-NOTAN sy-vline 
WA_ENT7537_STR-KRZAN sy-vline 
WA_ENT7537_STR-ENDAT sy-vline 
WA_ENT7537_STR-ENTIM sy-vline 
WA_ENT7537_STR-FGTYP sy-vline 
WA_ENT7537_STR-KZKOM sy-vline 
WA_ENT7537_STR-KOMTX sy-vline 
WA_ENT7537_STR-KOLTX sy-vline 
WA_ENT7537_STR-ARBUN sy-vline 
WA_ENT7537_STR-ENDDT sy-vline 
WA_ENT7537_STR-FSPER sy-vline 
WA_ENT7537_STR-ERDAT sy-vline 
WA_ENT7537_STR-ERUSR sy-vline 
WA_ENT7537_STR-UPDAT sy-vline 
WA_ENT7537_STR-UPUSR sy-vline 
WA_ENT7537_STR-STORN sy-vline 
WA_ENT7537_STR-STUSR sy-vline 
WA_ENT7537_STR-STDAT sy-vline 
WA_ENT7537_STR-VORPT sy-vline 
WA_ENT7537_STR-BEGDT sy-vline 
WA_ENT7537_STR-STASP sy-vline 
WA_ENT7537_STR-KV_KZ sy-vline 
WA_ENT7537_STR-EAUFN sy-vline 
WA_ENT7537_STR-KVUEB sy-vline      INTO ld_text SEPARATED BY SPACE.

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