ABAP Select data from SAP table TADWP00A into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TADWP00A 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 TADWP00A. 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 TADWP00A 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_TADWP00A TYPE STANDARD TABLE OF TADWP00A,
      WA_TADWP00A TYPE TADWP00A,
      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: <TADWP00A> TYPE TADWP00A.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_TADWP00A.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM TADWP00A
  INTO TABLE IT_TADWP00A.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TADWP00A
*  INTO TABLE @DATA(IT_TADWP00A2).
*--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_TADWP00A INDEX 1 INTO DATA(WA_TADWP00A2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_TADWP00A ASSIGNING <TADWP00A>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TADWP00A>-GLOB = 1.
<TADWP00A>-NOTIFICATION = 1.
<TADWP00A>-TRACING = 1.
<TADWP00A>-ADD_READTABS = 1.
<TADWP00A>-PARAM01 = 1.

ENDLOOP.

LOOP AT IT_TADWP00A INTO WA_TADWP00A.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TADWP00A-PARAM02, sy-vline,
  WA_TADWP00A-PARAM03, sy-vline,
  WA_TADWP00A-PARAM04, sy-vline,
  WA_TADWP00A-PARAM05, sy-vline,
  WA_TADWP00A-CHANNEL, sy-vline,
  WA_TADWP00A-ARCHIVEPOLICY, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TADWP00A 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_TADWP00A 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_TADWP00A INTO WA_TADWP00A.


*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_TADWP00A_STR, 
GLOB TYPE STRING,
NOTIFICATION TYPE STRING,
TRACING TYPE STRING,
ADD_READTABS TYPE STRING,
PARAM01 TYPE STRING,
PARAM02 TYPE STRING,
PARAM03 TYPE STRING,
PARAM04 TYPE STRING,
PARAM05 TYPE STRING,
CHANNEL TYPE STRING,
ARCHIVEPOLICY TYPE STRING,
SWITCH01 TYPE STRING,
SWITCH02 TYPE STRING,
SWITCH03 TYPE STRING,
SWITCH04 TYPE STRING,
SWITCH05 TYPE STRING,
SWITCH06 TYPE STRING,
SWITCH07 TYPE STRING,
SWITCH08 TYPE STRING,
SWITCH09 TYPE STRING,
SWITCH10 TYPE STRING,
SWITCH11 TYPE STRING,
SWITCH12 TYPE STRING,
SWITCH13 TYPE STRING,
SWITCH14 TYPE STRING,
SWITCH15 TYPE STRING,
STRIPE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TADWP00A_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_TADWP00A_STR-GLOB sy-vline 
WA_TADWP00A_STR-NOTIFICATION sy-vline 
WA_TADWP00A_STR-TRACING sy-vline 
WA_TADWP00A_STR-ADD_READTABS sy-vline 
WA_TADWP00A_STR-PARAM01 sy-vline 
WA_TADWP00A_STR-PARAM02 sy-vline 
WA_TADWP00A_STR-PARAM03 sy-vline 
WA_TADWP00A_STR-PARAM04 sy-vline 
WA_TADWP00A_STR-PARAM05 sy-vline 
WA_TADWP00A_STR-CHANNEL sy-vline 
WA_TADWP00A_STR-ARCHIVEPOLICY sy-vline 
WA_TADWP00A_STR-SWITCH01 sy-vline 
WA_TADWP00A_STR-SWITCH02 sy-vline 
WA_TADWP00A_STR-SWITCH03 sy-vline 
WA_TADWP00A_STR-SWITCH04 sy-vline 
WA_TADWP00A_STR-SWITCH05 sy-vline 
WA_TADWP00A_STR-SWITCH06 sy-vline 
WA_TADWP00A_STR-SWITCH07 sy-vline 
WA_TADWP00A_STR-SWITCH08 sy-vline 
WA_TADWP00A_STR-SWITCH09 sy-vline 
WA_TADWP00A_STR-SWITCH10 sy-vline 
WA_TADWP00A_STR-SWITCH11 sy-vline 
WA_TADWP00A_STR-SWITCH12 sy-vline 
WA_TADWP00A_STR-SWITCH13 sy-vline 
WA_TADWP00A_STR-SWITCH14 sy-vline 
WA_TADWP00A_STR-SWITCH15 sy-vline 
WA_TADWP00A_STR-STRIPE sy-vline      INTO ld_text SEPARATED BY SPACE.

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