ABAP Select data from SAP table SNWD_VT_I_TELCO into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SNWD_VT_I_TELCO
*  INTO TABLE @DATA(IT_SNWD_VT_I_TELCO2).
*--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_SNWD_VT_I_TELCO INDEX 1 INTO DATA(WA_SNWD_VT_I_TELCO2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SNWD_VT_I_TELCO>-MANDT = 1.
<SNWD_VT_I_TELCO>-VTKEY = 1.
<SNWD_VT_I_TELCO>-VTPOS = 1.
<SNWD_VT_I_TELCO>-ERDAT = 1.
<SNWD_VT_I_TELCO>-ERTIM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SNWD_VT_I_TELCO-ERNAM, sy-vline,
  WA_SNWD_VT_I_TELCO-AEDAT, sy-vline,
  WA_SNWD_VT_I_TELCO-AETIM, sy-vline,
  WA_SNWD_VT_I_TELCO-AENAM, sy-vline,
  WA_SNWD_VT_I_TELCO-VTPID, sy-vline,
  WA_SNWD_VT_I_TELCO-VALFR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SNWD_VT_I_TELCO 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_SNWD_VT_I_TELCO 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_SNWD_VT_I_TELCO INTO WA_SNWD_VT_I_TELCO.


*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_SNWD_VT_I_TELCO_STR, 
MANDT TYPE STRING,
VTKEY TYPE STRING,
VTPOS TYPE STRING,
ERDAT TYPE STRING,
ERTIM TYPE STRING,
ERNAM TYPE STRING,
AEDAT TYPE STRING,
AETIM TYPE STRING,
AENAM TYPE STRING,
VTPID TYPE STRING,
VALFR TYPE STRING,
VALFR_LOCL TYPE STRING,
VALTO TYPE STRING,
VALTO_LOCL TYPE STRING,
CANCL TYPE STRING,
PAPID TYPE STRING,
VTITT TYPE STRING,
VKONT TYPE STRING,
PPACC TYPE STRING,
VKORG TYPE STRING,
VTWEG TYPE STRING,
SPART TYPE STRING,
VBER1 TYPE STRING,
VBER2 TYPE STRING,
BUKRS TYPE STRING,
PRCTR TYPE STRING,
SEGMT TYPE STRING,
STDSP TYPE STRING,
GSBER TYPE STRING,
PRDNR TYPE STRING,
CYCLE TYPE STRING,
CYCLE_DAY TYPE STRING,
CYCLE_DATE TYPE STRING,
VALTO_PRE TYPE STRING,
INV_SCHEDULE TYPE STRING,
VTTRG TYPE STRING,
MAKEY TYPE STRING,
MAPRD TYPE STRING,
SRVRP TYPE STRING,
PTSRL TYPE STRING,
VTKRF TYPE STRING,
AUFNR TYPE STRING,
PS_PSP_PNR TYPE STRING,
CB_SOLDTO TYPE STRING,
CB_BILLTO TYPE STRING,
CB_DZTERM TYPE STRING,
CB_BEMOT TYPE STRING,
CB_MNDID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SNWD_VT_I_TELCO_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_SNWD_VT_I_TELCO_STR-MANDT sy-vline 
WA_SNWD_VT_I_TELCO_STR-VTKEY sy-vline 
WA_SNWD_VT_I_TELCO_STR-VTPOS sy-vline 
WA_SNWD_VT_I_TELCO_STR-ERDAT sy-vline 
WA_SNWD_VT_I_TELCO_STR-ERTIM sy-vline 
WA_SNWD_VT_I_TELCO_STR-ERNAM sy-vline 
WA_SNWD_VT_I_TELCO_STR-AEDAT sy-vline 
WA_SNWD_VT_I_TELCO_STR-AETIM sy-vline 
WA_SNWD_VT_I_TELCO_STR-AENAM sy-vline 
WA_SNWD_VT_I_TELCO_STR-VTPID sy-vline 
WA_SNWD_VT_I_TELCO_STR-VALFR sy-vline 
WA_SNWD_VT_I_TELCO_STR-VALFR_LOCL sy-vline 
WA_SNWD_VT_I_TELCO_STR-VALTO sy-vline 
WA_SNWD_VT_I_TELCO_STR-VALTO_LOCL sy-vline 
WA_SNWD_VT_I_TELCO_STR-CANCL sy-vline 
WA_SNWD_VT_I_TELCO_STR-PAPID sy-vline 
WA_SNWD_VT_I_TELCO_STR-VTITT sy-vline 
WA_SNWD_VT_I_TELCO_STR-VKONT sy-vline 
WA_SNWD_VT_I_TELCO_STR-PPACC sy-vline 
WA_SNWD_VT_I_TELCO_STR-VKORG sy-vline 
WA_SNWD_VT_I_TELCO_STR-VTWEG sy-vline 
WA_SNWD_VT_I_TELCO_STR-SPART sy-vline 
WA_SNWD_VT_I_TELCO_STR-VBER1 sy-vline 
WA_SNWD_VT_I_TELCO_STR-VBER2 sy-vline 
WA_SNWD_VT_I_TELCO_STR-BUKRS sy-vline 
WA_SNWD_VT_I_TELCO_STR-PRCTR sy-vline 
WA_SNWD_VT_I_TELCO_STR-SEGMT sy-vline 
WA_SNWD_VT_I_TELCO_STR-STDSP sy-vline 
WA_SNWD_VT_I_TELCO_STR-GSBER sy-vline 
WA_SNWD_VT_I_TELCO_STR-PRDNR sy-vline 
WA_SNWD_VT_I_TELCO_STR-CYCLE sy-vline 
WA_SNWD_VT_I_TELCO_STR-CYCLE_DAY sy-vline 
WA_SNWD_VT_I_TELCO_STR-CYCLE_DATE sy-vline 
WA_SNWD_VT_I_TELCO_STR-VALTO_PRE sy-vline 
WA_SNWD_VT_I_TELCO_STR-INV_SCHEDULE sy-vline 
WA_SNWD_VT_I_TELCO_STR-VTTRG sy-vline 
WA_SNWD_VT_I_TELCO_STR-MAKEY sy-vline 
WA_SNWD_VT_I_TELCO_STR-MAPRD sy-vline 
WA_SNWD_VT_I_TELCO_STR-SRVRP sy-vline 
WA_SNWD_VT_I_TELCO_STR-PTSRL sy-vline 
WA_SNWD_VT_I_TELCO_STR-VTKRF sy-vline 
WA_SNWD_VT_I_TELCO_STR-AUFNR sy-vline 
WA_SNWD_VT_I_TELCO_STR-PS_PSP_PNR sy-vline 
WA_SNWD_VT_I_TELCO_STR-CB_SOLDTO sy-vline 
WA_SNWD_VT_I_TELCO_STR-CB_BILLTO sy-vline 
WA_SNWD_VT_I_TELCO_STR-CB_DZTERM sy-vline 
WA_SNWD_VT_I_TELCO_STR-CB_BEMOT sy-vline 
WA_SNWD_VT_I_TELCO_STR-CB_MNDID sy-vline      INTO ld_text SEPARATED BY SPACE.

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