ABAP Select data from SAP table T440P into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T440P 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 T440P. 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 T440P 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_T440P TYPE STANDARD TABLE OF T440P,
      WA_T440P TYPE T440P,
      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: <T440P> TYPE T440P.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T440P.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T440P
  INTO TABLE IT_T440P.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T440P
*  INTO TABLE @DATA(IT_T440P2).
*--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_T440P INDEX 1 INTO DATA(WA_T440P2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T440P ASSIGNING <T440P>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T440P>-MANDT = 1.
<T440P>-PRPFL = 1.
<T440P>-PERKZ = 1.
<T440P>-PERIV = 1.
<T440P>-FABKL = 1.

ENDLOOP.

LOOP AT IT_T440P INTO WA_T440P.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T440P-ANZNK, sy-vline,
  WA_T440P-VOPER, sy-vline,
  WA_T440P-BIPER, sy-vline,
  WA_T440P-VGVON, sy-vline,
  WA_T440P-VGBIS, sy-vline,
  WA_T440P-WAERS, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T440P 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_T440P 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_T440P INTO WA_T440P.


*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 CUNIT, internal->external for field MEINS
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_T440P-MEINS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_T440P-MEINS.
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_T440P_STR, 
MANDT TYPE STRING,
PRPFL TYPE STRING,
PERKZ TYPE STRING,
PERIV TYPE STRING,
FABKL TYPE STRING,
ANZNK TYPE STRING,
VOPER TYPE STRING,
BIPER TYPE STRING,
VGVON TYPE STRING,
VGBIS TYPE STRING,
WAERS TYPE STRING,
MEINS TYPE STRING,
FNULL TYPE STRING,
PRSTR TYPE STRING,
ALPHX TYPE STRING,
BETAX TYPE STRING,
GAMMX TYPE STRING,
PERAN TYPE STRING,
GEWGR TYPE STRING,
PERIO TYPE STRING,
FLG01 TYPE STRING,
FLG02 TYPE STRING,
PFITX TYPE STRING,
APPLI TYPE STRING,
MAXVG TYPE STRING,
VBKEZ TYPE STRING,
PRWUG TYPE STRING,
PRWOG TYPE STRING,
ANZPR TYPE STRING,
FAUSR TYPE STRING,
SIGMA TYPE STRING,
AVGPER TYPE STRING,
FLGEXC TYPE STRING,
FLGCOR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T440P_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_T440P_STR-MANDT sy-vline 
WA_T440P_STR-PRPFL sy-vline 
WA_T440P_STR-PERKZ sy-vline 
WA_T440P_STR-PERIV sy-vline 
WA_T440P_STR-FABKL sy-vline 
WA_T440P_STR-ANZNK sy-vline 
WA_T440P_STR-VOPER sy-vline 
WA_T440P_STR-BIPER sy-vline 
WA_T440P_STR-VGVON sy-vline 
WA_T440P_STR-VGBIS sy-vline 
WA_T440P_STR-WAERS sy-vline 
WA_T440P_STR-MEINS sy-vline 
WA_T440P_STR-FNULL sy-vline 
WA_T440P_STR-PRSTR sy-vline 
WA_T440P_STR-ALPHX sy-vline 
WA_T440P_STR-BETAX sy-vline 
WA_T440P_STR-GAMMX sy-vline 
WA_T440P_STR-PERAN sy-vline 
WA_T440P_STR-GEWGR sy-vline 
WA_T440P_STR-PERIO sy-vline 
WA_T440P_STR-FLG01 sy-vline 
WA_T440P_STR-FLG02 sy-vline 
WA_T440P_STR-PFITX sy-vline 
WA_T440P_STR-APPLI sy-vline 
WA_T440P_STR-MAXVG sy-vline 
WA_T440P_STR-VBKEZ sy-vline 
WA_T440P_STR-PRWUG sy-vline 
WA_T440P_STR-PRWOG sy-vline 
WA_T440P_STR-ANZPR sy-vline 
WA_T440P_STR-FAUSR sy-vline 
WA_T440P_STR-SIGMA sy-vline 
WA_T440P_STR-AVGPER sy-vline 
WA_T440P_STR-FLGEXC sy-vline 
WA_T440P_STR-FLGCOR sy-vline      INTO ld_text SEPARATED BY SPACE.

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