ABAP Select data from SAP table ENT2003 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT2003 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 ENT2003. 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 ENT2003 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_ENT2003 TYPE STANDARD TABLE OF ENT2003,
      WA_ENT2003 TYPE ENT2003,
      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: <ENT2003> TYPE ENT2003.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT2003.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT2003
  INTO TABLE IT_ENT2003.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT2003
*  INTO TABLE @DATA(IT_ENT20032).
*--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_ENT2003 INDEX 1 INTO DATA(WA_ENT20032).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT2003 ASSIGNING <ENT2003>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT2003>-MANDT = 1.
<ENT2003>-KTOPL = 1.
<ENT2003>-KTOPLPOS = 1.
<ENT2003>-VBUND = 1.
<ENT2003>-KTOKS = 1.

ENDLOOP.

LOOP AT IT_ENT2003 INTO WA_ENT2003.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT2003-XLOEV, sy-vline,
  WA_ENT2003-XSPEA, sy-vline,
  WA_ENT2003-XSPEB, sy-vline,
  WA_ENT2003-XSPEP, sy-vline,
  WA_ENT2003-MUSTR, sy-vline,
  WA_ENT2003-ERNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT2003 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_ENT2003 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_ENT2003 INTO WA_ENT2003.


*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 KTOPLPOS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2003-KTOPLPOS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2003-KTOPLPOS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBUND
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2003-VBUND
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2003-VBUND.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field MUSTR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2003-MUSTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2003-MUSTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ISOLA, internal->external for field SPRAS
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2003-SPRAS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2003-SPRAS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BILKT
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT2003-BILKT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT2003-BILKT.
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_ENT2003_STR, 
MANDT TYPE STRING,
KTOPL TYPE STRING,
KTOPLPOS TYPE STRING,
VBUND TYPE STRING,
KTOKS TYPE STRING,
XLOEV TYPE STRING,
XSPEA TYPE STRING,
XSPEB TYPE STRING,
XSPEP TYPE STRING,
MUSTR TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
SPRAS TYPE STRING,
TXT20 TYPE STRING,
TXT50 TYPE STRING,
BILKT TYPE STRING,
XBILK TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT2003_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_ENT2003_STR-MANDT sy-vline 
WA_ENT2003_STR-KTOPL sy-vline 
WA_ENT2003_STR-KTOPLPOS sy-vline 
WA_ENT2003_STR-VBUND sy-vline 
WA_ENT2003_STR-KTOKS sy-vline 
WA_ENT2003_STR-XLOEV sy-vline 
WA_ENT2003_STR-XSPEA sy-vline 
WA_ENT2003_STR-XSPEB sy-vline 
WA_ENT2003_STR-XSPEP sy-vline 
WA_ENT2003_STR-MUSTR sy-vline 
WA_ENT2003_STR-ERNAM sy-vline 
WA_ENT2003_STR-ERDAT sy-vline 
WA_ENT2003_STR-SPRAS sy-vline 
WA_ENT2003_STR-TXT20 sy-vline 
WA_ENT2003_STR-TXT50 sy-vline 
WA_ENT2003_STR-BILKT sy-vline 
WA_ENT2003_STR-XBILK sy-vline      INTO ld_text SEPARATED BY SPACE.

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