ABAP Select data from SAP table ENT2037 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT2037 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 ENT2037. 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 ENT2037 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_ENT2037 TYPE STANDARD TABLE OF ENT2037,
      WA_ENT2037 TYPE ENT2037,
      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: <ENT2037> TYPE ENT2037.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT2037.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT2037
  INTO TABLE IT_ENT2037.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT2037
*  INTO TABLE @DATA(IT_ENT20372).
*--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_ENT2037 INDEX 1 INTO DATA(WA_ENT20372).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT2037 ASSIGNING <ENT2037>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT2037>-MANDT = 1.
<ENT2037>-BUKRS = 1.
<ENT2037>-BUTXT = 1.
<ENT2037>-ORT01 = 1.
<ENT2037>-LAND1 = 1.

ENDLOOP.

LOOP AT IT_ENT2037 INTO WA_ENT2037.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT2037-WAERS, sy-vline,
  WA_ENT2037-SPRAS, sy-vline,
  WA_ENT2037-KTOPL, sy-vline,
  WA_ENT2037-WAABW, sy-vline,
  WA_ENT2037-PERIV, sy-vline,
  WA_ENT2037-KOKFI, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT2037 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_ENT2037 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_ENT2037 INTO WA_ENT2037.


*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 SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2037-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2037-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field RCOMP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2037-RCOMP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2037-RCOMP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ADRNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2037-ADRNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2037-ADRNR.
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_ENT2037_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
BUTXT TYPE STRING,
ORT01 TYPE STRING,
LAND1 TYPE STRING,
WAERS TYPE STRING,
SPRAS TYPE STRING,
KTOPL TYPE STRING,
WAABW TYPE STRING,
PERIV TYPE STRING,
KOKFI TYPE STRING,
RCOMP TYPE STRING,
ADRNR TYPE STRING,
FIKRS TYPE STRING,
BUVAR TYPE STRING,
FDBUK TYPE STRING,
XFDIS TYPE STRING,
XVALV TYPE STRING,
XSKFN TYPE STRING,
KKBER TYPE STRING,
XMWSN TYPE STRING,
MREGL TYPE STRING,
XGSBE TYPE STRING,
XGJRV TYPE STRING,
XKDFT TYPE STRING,
XPROD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT2037_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_ENT2037_STR-MANDT sy-vline 
WA_ENT2037_STR-BUKRS sy-vline 
WA_ENT2037_STR-BUTXT sy-vline 
WA_ENT2037_STR-ORT01 sy-vline 
WA_ENT2037_STR-LAND1 sy-vline 
WA_ENT2037_STR-WAERS sy-vline 
WA_ENT2037_STR-SPRAS sy-vline 
WA_ENT2037_STR-KTOPL sy-vline 
WA_ENT2037_STR-WAABW sy-vline 
WA_ENT2037_STR-PERIV sy-vline 
WA_ENT2037_STR-KOKFI sy-vline 
WA_ENT2037_STR-RCOMP sy-vline 
WA_ENT2037_STR-ADRNR sy-vline 
WA_ENT2037_STR-FIKRS sy-vline 
WA_ENT2037_STR-BUVAR sy-vline 
WA_ENT2037_STR-FDBUK sy-vline 
WA_ENT2037_STR-XFDIS sy-vline 
WA_ENT2037_STR-XVALV sy-vline 
WA_ENT2037_STR-XSKFN sy-vline 
WA_ENT2037_STR-KKBER sy-vline 
WA_ENT2037_STR-XMWSN sy-vline 
WA_ENT2037_STR-MREGL sy-vline 
WA_ENT2037_STR-XGSBE sy-vline 
WA_ENT2037_STR-XGJRV sy-vline 
WA_ENT2037_STR-XKDFT sy-vline 
WA_ENT2037_STR-XPROD sy-vline      INTO ld_text SEPARATED BY SPACE.

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