ABAP Select data from SAP table TDWS into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TDWS
*  INTO TABLE @DATA(IT_TDWS2).
*--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_TDWS INDEX 1 INTO DATA(WA_TDWS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TDWS>-MANDT = 1.
<TDWS>-DOKAR = 1.
<TDWS>-DOKST = 1.
<TDWS>-PRFAW = 1.
<TDWS>-DOSAR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TDWS-OBJPK, sy-vline,
  WA_TDWS-FRKNZ, sy-vline,
  WA_TDWS-SVOR1, sy-vline,
  WA_TDWS-SVOR2, sy-vline,
  WA_TDWS-SVOR3, sy-vline,
  WA_TDWS-SVOR4, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TDWS 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_TDWS 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_TDWS INTO WA_TDWS.


*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_TDWS_STR, 
MANDT TYPE STRING,
DOKAR TYPE STRING,
DOKST TYPE STRING,
PRFAW TYPE STRING,
DOSAR TYPE STRING,
OBJPK TYPE STRING,
FRKNZ TYPE STRING,
SVOR1 TYPE STRING,
SVOR2 TYPE STRING,
SVOR3 TYPE STRING,
SVOR4 TYPE STRING,
SVOR5 TYPE STRING,
SVOR6 TYPE STRING,
FRTAE TYPE STRING,
AUDIT1 TYPE STRING,
WFAUFGABE TYPE STRING,
STATEXIT TYPE STRING,
STATFORM TYPE STRING,
OTYPE TYPE STRING,
OBJID TYPE STRING,
CV_IMMEDT TYPE STRING,
DLOCK TYPE STRING,
SIGNSTRAT TYPE STRING,
CHECKIN_FLAG TYPE STRING,
CC_HIST_REQ TYPE STRING,
CHECKIN_REQ TYPE STRING,
ONLY_ONE_VERSION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TDWS_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_TDWS_STR-MANDT sy-vline 
WA_TDWS_STR-DOKAR sy-vline 
WA_TDWS_STR-DOKST sy-vline 
WA_TDWS_STR-PRFAW sy-vline 
WA_TDWS_STR-DOSAR sy-vline 
WA_TDWS_STR-OBJPK sy-vline 
WA_TDWS_STR-FRKNZ sy-vline 
WA_TDWS_STR-SVOR1 sy-vline 
WA_TDWS_STR-SVOR2 sy-vline 
WA_TDWS_STR-SVOR3 sy-vline 
WA_TDWS_STR-SVOR4 sy-vline 
WA_TDWS_STR-SVOR5 sy-vline 
WA_TDWS_STR-SVOR6 sy-vline 
WA_TDWS_STR-FRTAE sy-vline 
WA_TDWS_STR-AUDIT1 sy-vline 
WA_TDWS_STR-WFAUFGABE sy-vline 
WA_TDWS_STR-STATEXIT sy-vline 
WA_TDWS_STR-STATFORM sy-vline 
WA_TDWS_STR-OTYPE sy-vline 
WA_TDWS_STR-OBJID sy-vline 
WA_TDWS_STR-CV_IMMEDT sy-vline 
WA_TDWS_STR-DLOCK sy-vline 
WA_TDWS_STR-SIGNSTRAT sy-vline 
WA_TDWS_STR-CHECKIN_FLAG sy-vline 
WA_TDWS_STR-CC_HIST_REQ sy-vline 
WA_TDWS_STR-CHECKIN_REQ sy-vline 
WA_TDWS_STR-ONLY_ONE_VERSION sy-vline      INTO ld_text SEPARATED BY SPACE.

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