ABAP Select data from SAP table E3CVBEL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP E3CVBEL 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 E3CVBEL. 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 E3CVBEL 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_E3CVBEL TYPE STANDARD TABLE OF E3CVBEL,
      WA_E3CVBEL TYPE E3CVBEL,
      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: <E3CVBEL> TYPE E3CVBEL.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_E3CVBEL.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM E3CVBEL
  INTO TABLE IT_E3CVBEL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM E3CVBEL
*  INTO TABLE @DATA(IT_E3CVBEL2).
*--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_E3CVBEL INDEX 1 INTO DATA(WA_E3CVBEL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_E3CVBEL ASSIGNING <E3CVBEL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<E3CVBEL>-SUPKZ = 1.
<E3CVBEL>-VBELN = 1.
<E3CVBEL>-POSNR = 1.
<E3CVBEL>-ETENR = 1.
<E3CVBEL>-ETTYP = 1.

ENDLOOP.

LOOP AT IT_E3CVBEL INTO WA_E3CVBEL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_E3CVBEL-LFREL, sy-vline,
  WA_E3CVBEL-EDATU, sy-vline,
  WA_E3CVBEL-EZEIT, sy-vline,
  WA_E3CVBEL-WMENG, sy-vline,
  WA_E3CVBEL-BMENG, sy-vline,
  WA_E3CVBEL-VRKME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_E3CVBEL 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_E3CVBEL 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_E3CVBEL INTO WA_E3CVBEL.


*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 VBELN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBEL-VBELN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBEL-VBELN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBEL-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBEL-VRKME.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBEL-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBEL-MEINS.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VBELE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBEL-VBELE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBEL-VBELE.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field IDNNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBEL-IDNNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBEL-IDNNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field BANFN
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBEL-BANFN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBEL-BANFN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field ROMEI
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBEL-ROMEI
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBEL-ROMEI.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field AUFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBEL-AUFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBEL-AUFNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field PLNUM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_E3CVBEL-PLNUM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_E3CVBEL-PLNUM.
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_E3CVBEL_STR, 
SUPKZ TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
ETENR TYPE STRING,
ETTYP TYPE STRING,
LFREL TYPE STRING,
EDATU TYPE STRING,
EZEIT TYPE STRING,
WMENG TYPE STRING,
BMENG TYPE STRING,
VRKME TYPE STRING,
LMENG TYPE STRING,
MEINS TYPE STRING,
BDDAT TYPE STRING,
BDART TYPE STRING,
PLART TYPE STRING,
VBELE TYPE STRING,
POSNE TYPE STRING,
ETENE TYPE STRING,
RSDAT TYPE STRING,
IDNNR TYPE STRING,
BANFN TYPE STRING,
BSART TYPE STRING,
BSTYP TYPE STRING,
WEPOS TYPE STRING,
REPOS TYPE STRING,
LRGDT TYPE STRING,
PRGRS TYPE STRING,
TDDAT TYPE STRING,
MBDAT TYPE STRING,
LDDAT TYPE STRING,
WADAT TYPE STRING,
CMENG TYPE STRING,
LIFSP TYPE STRING,
GRSTR TYPE STRING,
ABART TYPE STRING,
ABRUF TYPE STRING,
ROMS1 TYPE STRING,
ROMS2 TYPE STRING,
ROMS3 TYPE STRING,
ROMEI TYPE STRING,
RFORM TYPE STRING,
UMVKZ TYPE STRING,
UMVKN TYPE STRING,
VERFP TYPE STRING,
BWART TYPE STRING,
BNFPO TYPE STRING,
ETART TYPE STRING,
AUFNR TYPE STRING,
PLNUM TYPE STRING,
SERNR TYPE STRING,
AESKD TYPE STRING,
OEIME TYPE STRING,
OEIKW TYPE STRING,END OF T_EKKO_STR.
DATA: WA_E3CVBEL_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_E3CVBEL_STR-SUPKZ sy-vline 
WA_E3CVBEL_STR-VBELN sy-vline 
WA_E3CVBEL_STR-POSNR sy-vline 
WA_E3CVBEL_STR-ETENR sy-vline 
WA_E3CVBEL_STR-ETTYP sy-vline 
WA_E3CVBEL_STR-LFREL sy-vline 
WA_E3CVBEL_STR-EDATU sy-vline 
WA_E3CVBEL_STR-EZEIT sy-vline 
WA_E3CVBEL_STR-WMENG sy-vline 
WA_E3CVBEL_STR-BMENG sy-vline 
WA_E3CVBEL_STR-VRKME sy-vline 
WA_E3CVBEL_STR-LMENG sy-vline 
WA_E3CVBEL_STR-MEINS sy-vline 
WA_E3CVBEL_STR-BDDAT sy-vline 
WA_E3CVBEL_STR-BDART sy-vline 
WA_E3CVBEL_STR-PLART sy-vline 
WA_E3CVBEL_STR-VBELE sy-vline 
WA_E3CVBEL_STR-POSNE sy-vline 
WA_E3CVBEL_STR-ETENE sy-vline 
WA_E3CVBEL_STR-RSDAT sy-vline 
WA_E3CVBEL_STR-IDNNR sy-vline 
WA_E3CVBEL_STR-BANFN sy-vline 
WA_E3CVBEL_STR-BSART sy-vline 
WA_E3CVBEL_STR-BSTYP sy-vline 
WA_E3CVBEL_STR-WEPOS sy-vline 
WA_E3CVBEL_STR-REPOS sy-vline 
WA_E3CVBEL_STR-LRGDT sy-vline 
WA_E3CVBEL_STR-PRGRS sy-vline 
WA_E3CVBEL_STR-TDDAT sy-vline 
WA_E3CVBEL_STR-MBDAT sy-vline 
WA_E3CVBEL_STR-LDDAT sy-vline 
WA_E3CVBEL_STR-WADAT sy-vline 
WA_E3CVBEL_STR-CMENG sy-vline 
WA_E3CVBEL_STR-LIFSP sy-vline 
WA_E3CVBEL_STR-GRSTR sy-vline 
WA_E3CVBEL_STR-ABART sy-vline 
WA_E3CVBEL_STR-ABRUF sy-vline 
WA_E3CVBEL_STR-ROMS1 sy-vline 
WA_E3CVBEL_STR-ROMS2 sy-vline 
WA_E3CVBEL_STR-ROMS3 sy-vline 
WA_E3CVBEL_STR-ROMEI sy-vline 
WA_E3CVBEL_STR-RFORM sy-vline 
WA_E3CVBEL_STR-UMVKZ sy-vline 
WA_E3CVBEL_STR-UMVKN sy-vline 
WA_E3CVBEL_STR-VERFP sy-vline 
WA_E3CVBEL_STR-BWART sy-vline 
WA_E3CVBEL_STR-BNFPO sy-vline 
WA_E3CVBEL_STR-ETART sy-vline 
WA_E3CVBEL_STR-AUFNR sy-vline 
WA_E3CVBEL_STR-PLNUM sy-vline 
WA_E3CVBEL_STR-SERNR sy-vline 
WA_E3CVBEL_STR-AESKD sy-vline 
WA_E3CVBEL_STR-OEIME sy-vline 
WA_E3CVBEL_STR-OEIKW sy-vline      INTO ld_text SEPARATED BY SPACE.

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