ABAP Select data from SAP table ENT3012 into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP ENT3012 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 ENT3012. 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 ENT3012 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_ENT3012 TYPE STANDARD TABLE OF ENT3012,
      WA_ENT3012 TYPE ENT3012,
      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: <ENT3012> TYPE ENT3012.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_ENT3012.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM ENT3012
  INTO TABLE IT_ENT3012.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ENT3012
*  INTO TABLE @DATA(IT_ENT30122).
*--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_ENT3012 INDEX 1 INTO DATA(WA_ENT30122).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_ENT3012 ASSIGNING <ENT3012>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ENT3012>-MANDT = 1.
<ENT3012>-BUKRS = 1.
<ENT3012>-ANLN1 = 1.
<ENT3012>-ANLN2 = 1.
<ENT3012>-AFABE = 1.

ENDLOOP.

LOOP AT IT_ENT3012 INTO WA_ENT3012.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ENT3012-BDATU, sy-vline,
  WA_ENT3012-ADATU, sy-vline,
  WA_ENT3012-ERNAM, sy-vline,
  WA_ENT3012-ERDAT, sy-vline,
  WA_ENT3012-AENAM, sy-vline,
  WA_ENT3012-AEDAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ENT3012 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_ENT3012 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_ENT3012 INTO WA_ENT3012.


*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 ANLN1
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT3012-ANLN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3012-ANLN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLN2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT3012-ANLN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3012-ANLN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field UMJAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ENT3012-UMJAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3012-UMJAR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC132, internal->external for field SCHRW
CALL FUNCTION 'CONVERSION_EXIT_AC132_OUTPUT'
  EXPORTING
    input =                      WA_ENT3012-SCHRW
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3012-SCHRW.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field LGJAN
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ENT3012-LGJAN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3012-LGJAN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLGR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT3012-ANLGR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3012-ANLGR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ANLGR2
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ENT3012-ANLGR2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3012-ANLGR2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit GJAHR, internal->external for field VYEAR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_ENT3012-VYEAR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ENT3012-VYEAR.
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_ENT3012_STR, 
MANDT TYPE STRING,
BUKRS TYPE STRING,
ANLN1 TYPE STRING,
ANLN2 TYPE STRING,
AFABE TYPE STRING,
BDATU TYPE STRING,
ADATU TYPE STRING,
ERNAM TYPE STRING,
ERDAT TYPE STRING,
AENAM TYPE STRING,
AEDAT TYPE STRING,
XLOEV TYPE STRING,
XSPEB TYPE STRING,
FELEI TYPE STRING,
XNEGA TYPE STRING,
XGWGK TYPE STRING,
XUNTA TYPE STRING,
AFABG TYPE STRING,
ZINBG TYPE STRING,
SAFBG TYPE STRING,
INVSL TYPE STRING,
AFASL TYPE STRING,
NDJAR TYPE STRING,
NDPER TYPE STRING,
NAPRZ TYPE STRING,
SAPRZ TYPE STRING,
WBIND TYPE STRING,
ALIND TYPE STRING,
APROP TYPE STRING,
UMJAR TYPE STRING,
NDURJ TYPE STRING,
NDURP TYPE STRING,
SCHRW TYPE STRING,
LGJAN TYPE STRING,
PERFY TYPE STRING,
ANUPD TYPE STRING,
AUFWTG TYPE STRING,
XAFBE TYPE STRING,
ANLGR TYPE STRING,
ANLGR2 TYPE STRING,
VYEAR TYPE STRING,
VMNTH TYPE STRING,
INBDA TYPE STRING,
ABGDAT_B TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ENT3012_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_ENT3012_STR-MANDT sy-vline 
WA_ENT3012_STR-BUKRS sy-vline 
WA_ENT3012_STR-ANLN1 sy-vline 
WA_ENT3012_STR-ANLN2 sy-vline 
WA_ENT3012_STR-AFABE sy-vline 
WA_ENT3012_STR-BDATU sy-vline 
WA_ENT3012_STR-ADATU sy-vline 
WA_ENT3012_STR-ERNAM sy-vline 
WA_ENT3012_STR-ERDAT sy-vline 
WA_ENT3012_STR-AENAM sy-vline 
WA_ENT3012_STR-AEDAT sy-vline 
WA_ENT3012_STR-XLOEV sy-vline 
WA_ENT3012_STR-XSPEB sy-vline 
WA_ENT3012_STR-FELEI sy-vline 
WA_ENT3012_STR-XNEGA sy-vline 
WA_ENT3012_STR-XGWGK sy-vline 
WA_ENT3012_STR-XUNTA sy-vline 
WA_ENT3012_STR-AFABG sy-vline 
WA_ENT3012_STR-ZINBG sy-vline 
WA_ENT3012_STR-SAFBG sy-vline 
WA_ENT3012_STR-INVSL sy-vline 
WA_ENT3012_STR-AFASL sy-vline 
WA_ENT3012_STR-NDJAR sy-vline 
WA_ENT3012_STR-NDPER sy-vline 
WA_ENT3012_STR-NAPRZ sy-vline 
WA_ENT3012_STR-SAPRZ sy-vline 
WA_ENT3012_STR-WBIND sy-vline 
WA_ENT3012_STR-ALIND sy-vline 
WA_ENT3012_STR-APROP sy-vline 
WA_ENT3012_STR-UMJAR sy-vline 
WA_ENT3012_STR-NDURJ sy-vline 
WA_ENT3012_STR-NDURP sy-vline 
WA_ENT3012_STR-SCHRW sy-vline 
WA_ENT3012_STR-LGJAN sy-vline 
WA_ENT3012_STR-PERFY sy-vline 
WA_ENT3012_STR-ANUPD sy-vline 
WA_ENT3012_STR-AUFWTG sy-vline 
WA_ENT3012_STR-XAFBE sy-vline 
WA_ENT3012_STR-ANLGR sy-vline 
WA_ENT3012_STR-ANLGR2 sy-vline 
WA_ENT3012_STR-VYEAR sy-vline 
WA_ENT3012_STR-VMNTH sy-vline 
WA_ENT3012_STR-INBDA sy-vline 
WA_ENT3012_STR-ABGDAT_B sy-vline      INTO ld_text SEPARATED BY SPACE.

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