ABAP Select data from SAP table TPDASESSIONWP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPDASESSIONWP
*  INTO TABLE @DATA(IT_TPDASESSIONWP2).
*--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_TPDASESSIONWP INDEX 1 INTO DATA(WA_TPDASESSIONWP2).


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

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

ENDLOOP.

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

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


*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_TPDASESSIONWP_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_TPDASESSIONWP_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_TPDASESSIONWP_STR-APPLID sy-vline 
WA_TPDASESSIONWP_STR-DUSER sy-vline 
WA_TPDASESSIONWP_STR-LNAME sy-vline 
WA_TPDASESSIONWP_STR-WPID sy-vline 
WA_TPDASESSIONWP_STR-IDXXX sy-vline 
WA_TPDASESSIONWP_STR-KINDXXX sy-vline 
WA_TPDASESSIONWP_STR-FLAGACTIVEXXX sy-vline 
WA_TPDASESSIONWP_STR-SYMBNAMEXXX sy-vline 
WA_TPDASESSIONWP_STR-CONDITIONXXX sy-vline 
WA_TPDASESSIONWP_STR-PROGRAMXXX sy-vline 
WA_TPDASESSIONWP_STR-CLASSXXX sy-vline 
WA_TPDASESSIONWP_STR-PROCEDUREXXX sy-vline 
WA_TPDASESSIONWP_STR-SKIPCNTXXX sy-vline 
WA_TPDASESSIONWP_STR-FLAGSIGNALINGXXX sy-vline 
WA_TPDASESSIONWP_STR-CLONEXXX sy-vline 
WA_TPDASESSIONWP_STR-SYMBDATREFXXX sy-vline 
WA_TPDASESSIONWP_STR-WPVALUEXXX sy-vline 
WA_TPDASESSIONWP_STR-FLAGEXPIREDXXX sy-vline 
WA_TPDASESSIONWP_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.