ABAP Select data from SAP table V_T50G_XML into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T50G_XML 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 V_T50G_XML. 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 V_T50G_XML 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_V_T50G_XML TYPE STANDARD TABLE OF V_T50G_XML,
      WA_V_T50G_XML TYPE V_T50G_XML,
      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: <V_T50G_XML> TYPE V_T50G_XML.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T50G_XML.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T50G_XML
  INTO TABLE IT_V_T50G_XML.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T50G_XML
*  INTO TABLE @DATA(IT_V_T50G_XML2).
*--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_V_T50G_XML INDEX 1 INTO DATA(WA_V_T50G_XML2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T50G_XML ASSIGNING <V_T50G_XML>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T50G_XML>-MANDT = 1.
<V_T50G_XML>-MOLGA = 1.
<V_T50G_XML>-SAGRP = 1.
<V_T50G_XML>-DOCTY = 1.
<V_T50G_XML>-DSTYP = 1.

ENDLOOP.

LOOP AT IT_V_T50G_XML INTO WA_V_T50G_XML.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T50G_XML-VERS, sy-vline,
  WA_V_T50G_XML-SCHID, sy-vline,
  WA_V_T50G_XML-XSCHM, sy-vline,
  WA_V_T50G_XML-XVERS, sy-vline,
  WA_V_T50G_XML-LFDNR, sy-vline,
  WA_V_T50G_XML-PRNID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_V_T50G_XML 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_V_T50G_XML 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_V_T50G_XML INTO WA_V_T50G_XML.


*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_V_T50G_XML_STR, 
MANDT TYPE STRING,
MOLGA TYPE STRING,
SAGRP TYPE STRING,
DOCTY TYPE STRING,
DSTYP TYPE STRING,
VERS TYPE STRING,
SCHID TYPE STRING,
XSCHM TYPE STRING,
XVERS TYPE STRING,
LFDNR TYPE STRING,
PRNID TYPE STRING,
OBLIG TYPE STRING,
ITABN TYPE STRING,
XMLEX TYPE STRING,
DOCTX TYPE STRING,
GRPTX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T50G_XML_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_V_T50G_XML_STR-MANDT sy-vline 
WA_V_T50G_XML_STR-MOLGA sy-vline 
WA_V_T50G_XML_STR-SAGRP sy-vline 
WA_V_T50G_XML_STR-DOCTY sy-vline 
WA_V_T50G_XML_STR-DSTYP sy-vline 
WA_V_T50G_XML_STR-VERS sy-vline 
WA_V_T50G_XML_STR-SCHID sy-vline 
WA_V_T50G_XML_STR-XSCHM sy-vline 
WA_V_T50G_XML_STR-XVERS sy-vline 
WA_V_T50G_XML_STR-LFDNR sy-vline 
WA_V_T50G_XML_STR-PRNID sy-vline 
WA_V_T50G_XML_STR-OBLIG sy-vline 
WA_V_T50G_XML_STR-ITABN sy-vline 
WA_V_T50G_XML_STR-XMLEX sy-vline 
WA_V_T50G_XML_STR-DOCTX sy-vline 
WA_V_T50G_XML_STR-GRPTX sy-vline      INTO ld_text SEPARATED BY SPACE.

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