ABAP Select data from SAP table DBERCHV into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP DBERCHV 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 DBERCHV. 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 DBERCHV 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_DBERCHV TYPE STANDARD TABLE OF DBERCHV,
      WA_DBERCHV TYPE DBERCHV,
      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: <DBERCHV> TYPE DBERCHV.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DBERCHV
*  INTO TABLE @DATA(IT_DBERCHV2).
*--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_DBERCHV INDEX 1 INTO DATA(WA_DBERCHV2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DBERCHV>-MANDT = 1.
<DBERCHV>-BELNR = 1.
<DBERCHV>-LFDNR = 1.
<DBERCHV>-ERCHV_ORIG = 1.
<DBERCHV>-AB = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DBERCHV-BIS, sy-vline,
  WA_DBERCHV-LOGIKZW, sy-vline,
  WA_DBERCHV-TIMTYP, sy-vline,
  WA_DBERCHV-PREISTYP, sy-vline,
  WA_DBERCHV-PREIS, sy-vline,
  WA_DBERCHV-MASSBILL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DBERCHV 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_DBERCHV 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_DBERCHV INTO WA_DBERCHV.


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

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

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

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

*Conversion exit ALPHA, internal->external for field SUBINST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_DBERCHV-SUBINST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DBERCHV-SUBINST.
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_DBERCHV_STR, 
MANDT TYPE STRING,
BELNR TYPE STRING,
LFDNR TYPE STRING,
ERCHV_ORIG TYPE STRING,
AB TYPE STRING,
BIS TYPE STRING,
LOGIKZW TYPE STRING,
TIMTYP TYPE STRING,
PREISTYP TYPE STRING,
PREIS TYPE STRING,
MASSBILL TYPE STRING,
ISTABLART TYPE STRING,
ISTABLARTVA TYPE STRING,
ABLESGR TYPE STRING,
ABLESGRV TYPE STRING,
OPERAND TYPE STRING,
STTARIF TYPE STRING,
BRENNWTA TYPE STRING,
ZUSTZAHL TYPE STRING,
ARTMENGE TYPE STRING,
UMFAKTOR TYPE STRING,
NETTOBTR TYPE STRING,
TWAERS TYPE STRING,
ABLBELNR TYPE STRING,
BELZEILE TYPE STRING,
ERCHV_BW_REL TYPE STRING,
SUBINST TYPE STRING,
SUBABRDATS TYPE STRING,
SUBABRVORG TYPE STRING,
EZ_ZWSTAND TYPE STRING,
EZ_ZWSTNDAB TYPE STRING,
EZ_ZWSTVOR TYPE STRING,
EZ_ABRMENGE TYPE STRING,
EZ_ZWSTDIFF TYPE STRING,
COLOGRP_INST TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DBERCHV_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_DBERCHV_STR-MANDT sy-vline 
WA_DBERCHV_STR-BELNR sy-vline 
WA_DBERCHV_STR-LFDNR sy-vline 
WA_DBERCHV_STR-ERCHV_ORIG sy-vline 
WA_DBERCHV_STR-AB sy-vline 
WA_DBERCHV_STR-BIS sy-vline 
WA_DBERCHV_STR-LOGIKZW sy-vline 
WA_DBERCHV_STR-TIMTYP sy-vline 
WA_DBERCHV_STR-PREISTYP sy-vline 
WA_DBERCHV_STR-PREIS sy-vline 
WA_DBERCHV_STR-MASSBILL sy-vline 
WA_DBERCHV_STR-ISTABLART sy-vline 
WA_DBERCHV_STR-ISTABLARTVA sy-vline 
WA_DBERCHV_STR-ABLESGR sy-vline 
WA_DBERCHV_STR-ABLESGRV sy-vline 
WA_DBERCHV_STR-OPERAND sy-vline 
WA_DBERCHV_STR-STTARIF sy-vline 
WA_DBERCHV_STR-BRENNWTA sy-vline 
WA_DBERCHV_STR-ZUSTZAHL sy-vline 
WA_DBERCHV_STR-ARTMENGE sy-vline 
WA_DBERCHV_STR-UMFAKTOR sy-vline 
WA_DBERCHV_STR-NETTOBTR sy-vline 
WA_DBERCHV_STR-TWAERS sy-vline 
WA_DBERCHV_STR-ABLBELNR sy-vline 
WA_DBERCHV_STR-BELZEILE sy-vline 
WA_DBERCHV_STR-ERCHV_BW_REL sy-vline 
WA_DBERCHV_STR-SUBINST sy-vline 
WA_DBERCHV_STR-SUBABRDATS sy-vline 
WA_DBERCHV_STR-SUBABRVORG sy-vline 
WA_DBERCHV_STR-EZ_ZWSTAND sy-vline 
WA_DBERCHV_STR-EZ_ZWSTNDAB sy-vline 
WA_DBERCHV_STR-EZ_ZWSTVOR sy-vline 
WA_DBERCHV_STR-EZ_ABRMENGE sy-vline 
WA_DBERCHV_STR-EZ_ZWSTDIFF sy-vline 
WA_DBERCHV_STR-COLOGRP_INST sy-vline      INTO ld_text SEPARATED BY SPACE.

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