ABAP Select data from SAP table TDS_RFC_WEC_VCFG_CHAR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_RFC_WEC_VCFG_CHAR
*  INTO TABLE @DATA(IT_TDS_RFC_WEC_VCFG_CHAR2).
*--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_TDS_RFC_WEC_VCFG_CHAR INDEX 1 INTO DATA(WA_TDS_RFC_WEC_VCFG_CHAR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_RFC_WEC_VCFG_CHAR>-HANDLE_ITEM = 1.
<TDS_RFC_WEC_VCFG_CHAR>-INSTANCE = 1.
<TDS_RFC_WEC_VCFG_CHAR>-ATNAM = 1.
<TDS_RFC_WEC_VCFG_CHAR>-ATNAM_T = 1.
<TDS_RFC_WEC_VCFG_CHAR>-ATVAL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_RFC_WEC_VCFG_CHAR-ATVAL_T, sy-vline,
  WA_TDS_RFC_WEC_VCFG_CHAR-ATEIN, sy-vline,
  WA_TDS_RFC_WEC_VCFG_CHAR-ATSON, sy-vline,
  WA_TDS_RFC_WEC_VCFG_CHAR-ATVIE, sy-vline,
  WA_TDS_RFC_WEC_VCFG_CHAR-ATINP, sy-vline,
  WA_TDS_RFC_WEC_VCFG_CHAR-ATERF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_RFC_WEC_VCFG_CHAR 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_TDS_RFC_WEC_VCFG_CHAR 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_TDS_RFC_WEC_VCFG_CHAR INTO WA_TDS_RFC_WEC_VCFG_CHAR.


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

*Conversion exit ATINN, internal->external for field ATINN
CALL FUNCTION 'CONVERSION_EXIT_ATINN_OUTPUT'
  EXPORTING
    input =                      WA_TDS_RFC_WEC_VCFG_CHAR-ATINN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_RFC_WEC_VCFG_CHAR-ATINN.
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_TDS_RFC_WEC_VCFG_CHAR_STR, 
HANDLE_ITEM TYPE STRING,
INSTANCE TYPE STRING,
ATNAM TYPE STRING,
ATNAM_T TYPE STRING,
ATVAL TYPE STRING,
ATVAL_T TYPE STRING,
ATEIN TYPE STRING,
ATSON TYPE STRING,
ATVIE TYPE STRING,
ATINP TYPE STRING,
ATERF TYPE STRING,
ATINT TYPE STRING,
ATFOR TYPE STRING,
ATKLE TYPE STRING,
ATAUT TYPE STRING,
VKOND TYPE STRING,
PRICE TYPE STRING,
MSEHI TYPE STRING,
ATINN TYPE STRING,
ANZST TYPE STRING,
ANZDZ TYPE STRING,
ATFLV TYPE STRING,
ATFLB TYPE STRING,
ATCOD TYPE STRING,
ATINC TYPE STRING,
ADDVAL TYPE STRING,
MSEH6 TYPE STRING,
ATVAL_LONG TYPE STRING,
ATVAL_T_LONG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_RFC_WEC_VCFG_CHAR_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_TDS_RFC_WEC_VCFG_CHAR_STR-HANDLE_ITEM sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-INSTANCE sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATNAM sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATNAM_T sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATVAL sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATVAL_T sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATEIN sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATSON sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATVIE sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATINP sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATERF sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATINT sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATFOR sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATKLE sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATAUT sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-VKOND sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-PRICE sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-MSEHI sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATINN sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ANZST sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ANZDZ sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATFLV sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATFLB sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATCOD sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATINC sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ADDVAL sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-MSEH6 sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATVAL_LONG sy-vline 
WA_TDS_RFC_WEC_VCFG_CHAR_STR-ATVAL_T_LONG sy-vline      INTO ld_text SEPARATED BY SPACE.

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