ABAP Select data from SAP table TPDA_SESSIONS_WPS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TPDA_SESSIONS_WPS 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_SESSIONS_WPS. 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_SESSIONS_WPS 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_SESSIONS_WPS TYPE STANDARD TABLE OF TPDA_SESSIONS_WPS,
      WA_TPDA_SESSIONS_WPS TYPE TPDA_SESSIONS_WPS,
      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_SESSIONS_WPS> TYPE TPDA_SESSIONS_WPS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPDA_SESSIONS_WPS
*  INTO TABLE @DATA(IT_TPDA_SESSIONS_WPS2).
*--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_SESSIONS_WPS INDEX 1 INTO DATA(WA_TPDA_SESSIONS_WPS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPDA_SESSIONS_WPS>-APPLID = 1.
<TPDA_SESSIONS_WPS>-DUSER = 1.
<TPDA_SESSIONS_WPS>-LNAME = 1.
<TPDA_SESSIONS_WPS>-WPID = 1.
<TPDA_SESSIONS_WPS>-IDXXX = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPDA_SESSIONS_WPS-KINDXXX, sy-vline,
  WA_TPDA_SESSIONS_WPS-FLAGACTIVEXXX, sy-vline,
  WA_TPDA_SESSIONS_WPS-SYMBNAMEXXX, sy-vline,
  WA_TPDA_SESSIONS_WPS-CONDITIONXXX, sy-vline,
  WA_TPDA_SESSIONS_WPS-PROGRAMXXX, sy-vline,
  WA_TPDA_SESSIONS_WPS-CLASSXXX, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPDA_SESSIONS_WPS 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_SESSIONS_WPS 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_SESSIONS_WPS INTO WA_TPDA_SESSIONS_WPS.


*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_SESSIONS_WPS_STR, 
APPLID TYPE STRING,
DUSER TYPE STRING,
LNAME TYPE STRING,
WPID TYPE STRING,
IDXXX TYPE STRING,
KINDXXX TYPE STRING,
FLAGACTIVEXXX TYPE STRING,
SYMBNAMEXXX TYPE STRING,
CONDITIONXXX TYPE STRING,
PROGRAMXXX TYPE STRING,
CLASSXXX TYPE STRING,
PROCEDUREXXX TYPE STRING,
SKIPCNTXXX TYPE STRING,
FLAGSIGNALINGXXX TYPE STRING,
CLONEXXX TYPE STRING,
SYMBDATREFXXX TYPE STRING,
WPVALUEXXX TYPE STRING,
FLAGEXPIREDXXX TYPE STRING,
SUBKEYXXX TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPDA_SESSIONS_WPS_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_SESSIONS_WPS_STR-APPLID sy-vline 
WA_TPDA_SESSIONS_WPS_STR-DUSER sy-vline 
WA_TPDA_SESSIONS_WPS_STR-LNAME sy-vline 
WA_TPDA_SESSIONS_WPS_STR-WPID sy-vline 
WA_TPDA_SESSIONS_WPS_STR-IDXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-KINDXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-FLAGACTIVEXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-SYMBNAMEXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-CONDITIONXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-PROGRAMXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-CLASSXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-PROCEDUREXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-SKIPCNTXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-FLAGSIGNALINGXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-CLONEXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-SYMBDATREFXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-WPVALUEXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-FLAGEXPIREDXXX sy-vline 
WA_TPDA_SESSIONS_WPS_STR-SUBKEYXXX sy-vline      INTO ld_text SEPARATED BY SPACE.

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