ABAP Select data from SAP table TPDA_LOADED_PROGS into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP TPDA_LOADED_PROGS 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_LOADED_PROGS. 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_LOADED_PROGS 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_LOADED_PROGS TYPE STANDARD TABLE OF TPDA_LOADED_PROGS,
      WA_TPDA_LOADED_PROGS TYPE TPDA_LOADED_PROGS,
      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_LOADED_PROGS> TYPE TPDA_LOADED_PROGS.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TPDA_LOADED_PROGS
*  INTO TABLE @DATA(IT_TPDA_LOADED_PROGS2).
*--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_LOADED_PROGS INDEX 1 INTO DATA(WA_TPDA_LOADED_PROGS2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TPDA_LOADED_PROGS>-CURRPROG = 1.
<TPDA_LOADED_PROGS>-PRG_COUNT = 1.
<TPDA_LOADED_PROGS>-HEADOFGROUP = 1.
<TPDA_LOADED_PROGS>-PRG_TYPE = 1.
<TPDA_LOADED_PROGS>-PROGRAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TPDA_LOADED_PROGS-PRGHEAD, sy-vline,
  WA_TPDA_LOADED_PROGS-SYS, sy-vline,
  WA_TPDA_LOADED_PROGS-MAINID, sy-vline,
  WA_TPDA_LOADED_PROGS-LANGU, sy-vline,
  WA_TPDA_LOADED_PROGS-LSIZE, sy-vline,
  WA_TPDA_LOADED_PROGS-GTIME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TPDA_LOADED_PROGS 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_LOADED_PROGS 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_LOADED_PROGS INTO WA_TPDA_LOADED_PROGS.


*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.

*Conversion exit ISOLA, internal->external for field LANGU
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_TPDA_LOADED_PROGS-LANGU
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TPDA_LOADED_PROGS-LANGU.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_TPDA_LOADED_PROGS_STR, 
CURRPROG TYPE STRING,
PRG_COUNT TYPE STRING,
HEADOFGROUP TYPE STRING,
PRG_TYPE TYPE STRING,
PROGRAM TYPE STRING,
PRGHEAD TYPE STRING,
SYS TYPE STRING,
MAINID TYPE STRING,
LANGU TYPE STRING,
LSIZE TYPE STRING,
GTIME TYPE STRING,
LCHANGEDATE TYPE STRING,
LCHANGETIME TYPE STRING,
NAV_TO_GLOBALS TYPE STRING,
NAV_TO_ATTR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TPDA_LOADED_PROGS_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_LOADED_PROGS_STR-CURRPROG sy-vline 
WA_TPDA_LOADED_PROGS_STR-PRG_COUNT sy-vline 
WA_TPDA_LOADED_PROGS_STR-HEADOFGROUP sy-vline 
WA_TPDA_LOADED_PROGS_STR-PRG_TYPE sy-vline 
WA_TPDA_LOADED_PROGS_STR-PROGRAM sy-vline 
WA_TPDA_LOADED_PROGS_STR-PRGHEAD sy-vline 
WA_TPDA_LOADED_PROGS_STR-SYS sy-vline 
WA_TPDA_LOADED_PROGS_STR-MAINID sy-vline 
WA_TPDA_LOADED_PROGS_STR-LANGU sy-vline 
WA_TPDA_LOADED_PROGS_STR-LSIZE sy-vline 
WA_TPDA_LOADED_PROGS_STR-GTIME sy-vline 
WA_TPDA_LOADED_PROGS_STR-LCHANGEDATE sy-vline 
WA_TPDA_LOADED_PROGS_STR-LCHANGETIME sy-vline 
WA_TPDA_LOADED_PROGS_STR-NAV_TO_GLOBALS sy-vline 
WA_TPDA_LOADED_PROGS_STR-NAV_TO_ATTR sy-vline      INTO ld_text SEPARATED BY SPACE.

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