ABAP Select data from SAP table VTX_SWAP 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 VTX_SWAP 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 VTX_SWAP. 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 VTX_SWAP 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_VTX_SWAP TYPE STANDARD TABLE OF VTX_SWAP,
      WA_VTX_SWAP TYPE VTX_SWAP,
      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: <VTX_SWAP> TYPE VTX_SWAP.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTX_SWAP
*  INTO TABLE @DATA(IT_VTX_SWAP2).
*--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_VTX_SWAP INDEX 1 INTO DATA(WA_VTX_SWAP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTX_SWAP>-XCOPIEBT1 = 1.
<VTX_SWAP>-XCOPIEBT2 = 1.
<VTX_SWAP>-XCOPIEVAL = 1.
<VTX_SWAP>-XCOPIEKUR = 1.
<VTX_SWAP>-XCOPIEREF = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTX_SWAP-XCOPIESWA, sy-vline,
  WA_VTX_SWAP-XCOPIEFPR, sy-vline,
  WA_VTX_SWAP-XCOPIESPO, sy-vline,
  WA_VTX_SWAP-XCOPIEFND, sy-vline,
  WA_VTX_SWAP-XCOPIEGRT, sy-vline,
  WA_VTX_SWAP-XCOPIEZUO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTX_SWAP 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_VTX_SWAP 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_VTX_SWAP INTO WA_VTX_SWAP.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_VTX_SWAP_STR, 
XCOPIEBT1 TYPE STRING,
XCOPIEBT2 TYPE STRING,
XCOPIEVAL TYPE STRING,
XCOPIEKUR TYPE STRING,
XCOPIEREF TYPE STRING,
XCOPIESWA TYPE STRING,
XCOPIEFPR TYPE STRING,
XCOPIESPO TYPE STRING,
XCOPIEFND TYPE STRING,
XCOPIEGRT TYPE STRING,
XCOPIEZUO TYPE STRING,
XCOPIERFR TYPE STRING,
XCOPIEMER TYPE STRING,
XCOPIERGA TYPE STRING,
XCOPIEGVC TYPE STRING,
XCOPIEFXD TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTX_SWAP_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_VTX_SWAP_STR-XCOPIEBT1 sy-vline 
WA_VTX_SWAP_STR-XCOPIEBT2 sy-vline 
WA_VTX_SWAP_STR-XCOPIEVAL sy-vline 
WA_VTX_SWAP_STR-XCOPIEKUR sy-vline 
WA_VTX_SWAP_STR-XCOPIEREF sy-vline 
WA_VTX_SWAP_STR-XCOPIESWA sy-vline 
WA_VTX_SWAP_STR-XCOPIEFPR sy-vline 
WA_VTX_SWAP_STR-XCOPIESPO sy-vline 
WA_VTX_SWAP_STR-XCOPIEFND sy-vline 
WA_VTX_SWAP_STR-XCOPIEGRT sy-vline 
WA_VTX_SWAP_STR-XCOPIEZUO sy-vline 
WA_VTX_SWAP_STR-XCOPIERFR sy-vline 
WA_VTX_SWAP_STR-XCOPIEMER sy-vline 
WA_VTX_SWAP_STR-XCOPIERGA sy-vline 
WA_VTX_SWAP_STR-XCOPIEGVC sy-vline 
WA_VTX_SWAP_STR-XCOPIEFXD sy-vline      INTO ld_text SEPARATED BY SPACE.

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