ABAP Select data from SAP table VZESS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VZESS
*  INTO TABLE @DATA(IT_VZESS2).
*--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_VZESS INDEX 1 INTO DATA(WA_VZESS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VZESS>-KURSF = 1.
<VZESS>-BUKRS = 1.
<VZESS>-BELNR = 1.
<VZESS>-GJAHR = 1.
<VZESS>-BUZEI = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VZESS-SHKZG, sy-vline,
  WA_VZESS-WAERS, sy-vline,
  WA_VZESS-DMBTR, sy-vline,
  WA_VZESS-WRBTR, sy-vline,
  WA_VZESS-VALUT, sy-vline,
  WA_VZESS-HKONT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VZESS 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_VZESS 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_VZESS INTO WA_VZESS.


*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 EXCRT, internal->external for field KURSF
CALL FUNCTION 'CONVERSION_EXIT_EXCRT_OUTPUT'
  EXPORTING
    input =                      WA_VZESS-KURSF
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VZESS-KURSF.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field FILKD
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_VZESS-FILKD
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_VZESS-FILKD.
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_VZESS_STR, 
KURSF TYPE STRING,
BUKRS TYPE STRING,
BELNR TYPE STRING,
GJAHR TYPE STRING,
BUZEI TYPE STRING,
SHKZG TYPE STRING,
WAERS TYPE STRING,
DMBTR TYPE STRING,
WRBTR TYPE STRING,
VALUT TYPE STRING,
HKONT TYPE STRING,
KUNNR TYPE STRING,
ZFBDT TYPE STRING,
RSTGR TYPE STRING,
VERTT TYPE STRING,
VERTN TYPE STRING,
VBEWA TYPE STRING,
DEPOT TYPE STRING,
RDIFF TYPE STRING,
FILKD TYPE STRING,
XBLNR TYPE STRING,
BSCHL TYPE STRING,
BVTYP TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VZESS_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_VZESS_STR-KURSF sy-vline 
WA_VZESS_STR-BUKRS sy-vline 
WA_VZESS_STR-BELNR sy-vline 
WA_VZESS_STR-GJAHR sy-vline 
WA_VZESS_STR-BUZEI sy-vline 
WA_VZESS_STR-SHKZG sy-vline 
WA_VZESS_STR-WAERS sy-vline 
WA_VZESS_STR-DMBTR sy-vline 
WA_VZESS_STR-WRBTR sy-vline 
WA_VZESS_STR-VALUT sy-vline 
WA_VZESS_STR-HKONT sy-vline 
WA_VZESS_STR-KUNNR sy-vline 
WA_VZESS_STR-ZFBDT sy-vline 
WA_VZESS_STR-RSTGR sy-vline 
WA_VZESS_STR-VERTT sy-vline 
WA_VZESS_STR-VERTN sy-vline 
WA_VZESS_STR-VBEWA sy-vline 
WA_VZESS_STR-DEPOT sy-vline 
WA_VZESS_STR-RDIFF sy-vline 
WA_VZESS_STR-FILKD sy-vline 
WA_VZESS_STR-XBLNR sy-vline 
WA_VZESS_STR-BSCHL sy-vline 
WA_VZESS_STR-BVTYP sy-vline      INTO ld_text SEPARATED BY SPACE.

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