ABAP Select data from SAP table TPDA_STACK_VIEW 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 TPDA_STACK_VIEW 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 TPDA_STACK_VIEW. 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 TPDA_STACK_VIEW 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_TPDA_STACK_VIEW TYPE STANDARD TABLE OF TPDA_STACK_VIEW,
      WA_TPDA_STACK_VIEW TYPE TPDA_STACK_VIEW,
      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: <TPDA_STACK_VIEW> TYPE TPDA_STACK_VIEW.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPDA_STACK_VIEW
*  INTO TABLE @DATA(IT_TPDA_STACK_VIEW2).
*--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_TPDA_STACK_VIEW INDEX 1 INTO DATA(WA_TPDA_STACK_VIEW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPDA_STACK_VIEW>-STACKPOINTER = 1.
<TPDA_STACK_VIEW>-STACKLEVEL = 1.
<TPDA_STACK_VIEW>-STACKINDEX = 1.
<TPDA_STACK_VIEW>-IMODELEVEL = 1.
<TPDA_STACK_VIEW>-ENHANCELEVEL = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPDA_STACK_VIEW-SYSTEMPROG, sy-vline,
  WA_TPDA_STACK_VIEW-FLAGDYNPCONT, sy-vline,
  WA_TPDA_STACK_VIEW-PROGRAM, sy-vline,
  WA_TPDA_STACK_VIEW-INCLUDE, sy-vline,
  WA_TPDA_STACK_VIEW-LINE, sy-vline,
  WA_TPDA_STACK_VIEW-EVENTTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPDA_STACK_VIEW 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_TPDA_STACK_VIEW 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_TPDA_STACK_VIEW INTO WA_TPDA_STACK_VIEW.


*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_TPDA_STACK_VIEW_STR, 
STACKPOINTER TYPE STRING,
STACKLEVEL TYPE STRING,
STACKINDEX TYPE STRING,
IMODELEVEL TYPE STRING,
ENHANCELEVEL TYPE STRING,
SYSTEMPROG TYPE STRING,
FLAGDYNPCONT TYPE STRING,
PROGRAM TYPE STRING,
INCLUDE TYPE STRING,
LINE TYPE STRING,
EVENTTYPE TYPE STRING,
EVENTNAME TYPE STRING,
LOCCLASSNAME TYPE STRING,
FLAG_EOEV TYPE STRING,
FLAG_EOEV_NOLREF TYPE STRING,
ACTION1 TYPE STRING,
STACK_KIND TYPE STRING,
MERGE TYPE STRING,
SUBINDEX TYPE STRING,
NAVI_PROG TYPE STRING,
NAVI_DYNNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPDA_STACK_VIEW_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_TPDA_STACK_VIEW_STR-STACKPOINTER sy-vline 
WA_TPDA_STACK_VIEW_STR-STACKLEVEL sy-vline 
WA_TPDA_STACK_VIEW_STR-STACKINDEX sy-vline 
WA_TPDA_STACK_VIEW_STR-IMODELEVEL sy-vline 
WA_TPDA_STACK_VIEW_STR-ENHANCELEVEL sy-vline 
WA_TPDA_STACK_VIEW_STR-SYSTEMPROG sy-vline 
WA_TPDA_STACK_VIEW_STR-FLAGDYNPCONT sy-vline 
WA_TPDA_STACK_VIEW_STR-PROGRAM sy-vline 
WA_TPDA_STACK_VIEW_STR-INCLUDE sy-vline 
WA_TPDA_STACK_VIEW_STR-LINE sy-vline 
WA_TPDA_STACK_VIEW_STR-EVENTTYPE sy-vline 
WA_TPDA_STACK_VIEW_STR-EVENTNAME sy-vline 
WA_TPDA_STACK_VIEW_STR-LOCCLASSNAME sy-vline 
WA_TPDA_STACK_VIEW_STR-FLAG_EOEV sy-vline 
WA_TPDA_STACK_VIEW_STR-FLAG_EOEV_NOLREF sy-vline 
WA_TPDA_STACK_VIEW_STR-ACTION1 sy-vline 
WA_TPDA_STACK_VIEW_STR-STACK_KIND sy-vline 
WA_TPDA_STACK_VIEW_STR-MERGE sy-vline 
WA_TPDA_STACK_VIEW_STR-SUBINDEX sy-vline 
WA_TPDA_STACK_VIEW_STR-NAVI_PROG sy-vline 
WA_TPDA_STACK_VIEW_STR-NAVI_DYNNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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