ABAP Select data from SAP table TDS_TOCONF into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TDS_TOCONF 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_TOCONF. 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_TOCONF 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_TOCONF TYPE STANDARD TABLE OF TDS_TOCONF,
      WA_TDS_TOCONF TYPE TDS_TOCONF,
      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_TOCONF> TYPE TDS_TOCONF.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDS_TOCONF
*  INTO TABLE @DATA(IT_TDS_TOCONF2).
*--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_TOCONF INDEX 1 INTO DATA(WA_TDS_TOCONF2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDS_TOCONF>-VSTEL = 1.
<TDS_TOCONF>-VBELN = 1.
<TDS_TOCONF>-POSNR = 1.
<TDS_TOCONF>-TANUM = 1.
<TDS_TOCONF>-LGNUM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDS_TOCONF-KUNWE, sy-vline,
  WA_TDS_TOCONF-KUNWE_T, sy-vline,
  WA_TDS_TOCONF-WERKS, sy-vline,
  WA_TDS_TOCONF-LGORT, sy-vline,
  WA_TDS_TOCONF-MATNR, sy-vline,
  WA_TDS_TOCONF-ARKTX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDS_TOCONF 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_TOCONF 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_TOCONF INTO WA_TDS_TOCONF.


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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_TDS_TOCONF-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_TOCONF-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field VRKME
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_TDS_TOCONF-VRKME
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TDS_TOCONF-VRKME.
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_TOCONF_STR, 
VSTEL TYPE STRING,
VBELN TYPE STRING,
POSNR TYPE STRING,
TANUM TYPE STRING,
LGNUM TYPE STRING,
KUNWE TYPE STRING,
KUNWE_T TYPE STRING,
WERKS TYPE STRING,
LGORT TYPE STRING,
MATNR TYPE STRING,
ARKTX TYPE STRING,
LFIMG TYPE STRING,
VRKME TYPE STRING,
XCHPF TYPE STRING,
UECHA TYPE STRING,
CHARG TYPE STRING,
KODAT TYPE STRING,
LDDAT TYPE STRING,
WADAT TYPE STRING,
TANUM_INT TYPE STRING,
POSNR_INT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDS_TOCONF_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_TOCONF_STR-VSTEL sy-vline 
WA_TDS_TOCONF_STR-VBELN sy-vline 
WA_TDS_TOCONF_STR-POSNR sy-vline 
WA_TDS_TOCONF_STR-TANUM sy-vline 
WA_TDS_TOCONF_STR-LGNUM sy-vline 
WA_TDS_TOCONF_STR-KUNWE sy-vline 
WA_TDS_TOCONF_STR-KUNWE_T sy-vline 
WA_TDS_TOCONF_STR-WERKS sy-vline 
WA_TDS_TOCONF_STR-LGORT sy-vline 
WA_TDS_TOCONF_STR-MATNR sy-vline 
WA_TDS_TOCONF_STR-ARKTX sy-vline 
WA_TDS_TOCONF_STR-LFIMG sy-vline 
WA_TDS_TOCONF_STR-VRKME sy-vline 
WA_TDS_TOCONF_STR-XCHPF sy-vline 
WA_TDS_TOCONF_STR-UECHA sy-vline 
WA_TDS_TOCONF_STR-CHARG sy-vline 
WA_TDS_TOCONF_STR-KODAT sy-vline 
WA_TDS_TOCONF_STR-LDDAT sy-vline 
WA_TDS_TOCONF_STR-WADAT sy-vline 
WA_TDS_TOCONF_STR-TANUM_INT sy-vline 
WA_TDS_TOCONF_STR-POSNR_INT sy-vline      INTO ld_text SEPARATED BY SPACE.

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