ABAP Select data from SAP table VTRC_SCR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM VTRC_SCR
*  INTO TABLE @DATA(IT_VTRC_SCR2).
*--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_VTRC_SCR INDEX 1 INTO DATA(WA_VTRC_SCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<VTRC_SCR>-RFCDEST = 1.
<VTRC_SCR>-XMLURL = 1.
<VTRC_SCR>-NAME = 1.
<VTRC_SCR>-AS_DEST = 1.
<VTRC_SCR>-AS_URLS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_VTRC_SCR-AS_SERV, sy-vline,
  WA_VTRC_SCR-AS_TRAC, sy-vline,
  WA_VTRC_SCR-AS_TRST, sy-vline,
  WA_VTRC_SCR-AS_ROUT, sy-vline,
  WA_VTRC_SCR-AS_XSIE, sy-vline,
  WA_VTRC_SCR-AS_META, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_VTRC_SCR 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_VTRC_SCR 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_VTRC_SCR INTO WA_VTRC_SCR.


*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_VTRC_SCR_STR, 
RFCDEST TYPE STRING,
XMLURL TYPE STRING,
NAME TYPE STRING,
AS_DEST TYPE STRING,
AS_URLS TYPE STRING,
AS_SERV TYPE STRING,
AS_TRAC TYPE STRING,
AS_TRST TYPE STRING,
AS_ROUT TYPE STRING,
AS_XSIE TYPE STRING,
AS_META TYPE STRING,
AS_PRDC TYPE STRING,
TEST TYPE STRING,
PROD TYPE STRING,
NRFROM TYPE STRING,
NRTO TYPE STRING,
XSITD_SEL TYPE STRING,
CTRL_TB01 TYPE STRING,
CTRL_TB01A TYPE STRING,
CTRL_TB02 TYPE STRING,
CTRL_TB04 TYPE STRING,
VSTEL_ACTIVE TYPE STRING,
VSTEL_INACTIVE TYPE STRING,
XSITD_FROM TYPE STRING,
COPYMASTER TYPE STRING,
NROBJ TYPE STRING,
NRNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_VTRC_SCR_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_VTRC_SCR_STR-RFCDEST sy-vline 
WA_VTRC_SCR_STR-XMLURL sy-vline 
WA_VTRC_SCR_STR-NAME sy-vline 
WA_VTRC_SCR_STR-AS_DEST sy-vline 
WA_VTRC_SCR_STR-AS_URLS sy-vline 
WA_VTRC_SCR_STR-AS_SERV sy-vline 
WA_VTRC_SCR_STR-AS_TRAC sy-vline 
WA_VTRC_SCR_STR-AS_TRST sy-vline 
WA_VTRC_SCR_STR-AS_ROUT sy-vline 
WA_VTRC_SCR_STR-AS_XSIE sy-vline 
WA_VTRC_SCR_STR-AS_META sy-vline 
WA_VTRC_SCR_STR-AS_PRDC sy-vline 
WA_VTRC_SCR_STR-TEST sy-vline 
WA_VTRC_SCR_STR-PROD sy-vline 
WA_VTRC_SCR_STR-NRFROM sy-vline 
WA_VTRC_SCR_STR-NRTO sy-vline 
WA_VTRC_SCR_STR-XSITD_SEL sy-vline 
WA_VTRC_SCR_STR-CTRL_TB01 sy-vline 
WA_VTRC_SCR_STR-CTRL_TB01A sy-vline 
WA_VTRC_SCR_STR-CTRL_TB02 sy-vline 
WA_VTRC_SCR_STR-CTRL_TB04 sy-vline 
WA_VTRC_SCR_STR-VSTEL_ACTIVE sy-vline 
WA_VTRC_SCR_STR-VSTEL_INACTIVE sy-vline 
WA_VTRC_SCR_STR-XSITD_FROM sy-vline 
WA_VTRC_SCR_STR-COPYMASTER sy-vline 
WA_VTRC_SCR_STR-NROBJ sy-vline 
WA_VTRC_SCR_STR-NRNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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