ABAP Select data from SAP table DERTPIFACEINP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DERTPIFACEINP
*  INTO TABLE @DATA(IT_DERTPIFACEINP2).
*--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_DERTPIFACEINP INDEX 1 INTO DATA(WA_DERTPIFACEINP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DERTPIFACEINP>-MANDT = 1.
<DERTPIFACEINP>-RTPINTERFACE = 1.
<DERTPIFACEINP>-RTPCOMP = 1.
<DERTPIFACEINP>-PARNUMBER = 1.
<DERTPIFACEINP>-RTPCOMPCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DERTPIFACEINP-DATEFROM, sy-vline,
  WA_DERTPIFACEINP-TIMEFROM, sy-vline,
  WA_DERTPIFACEINP-DATETO, sy-vline,
  WA_DERTPIFACEINP-TIMETO, sy-vline,
  WA_DERTPIFACEINP-CONSTANT_VALUE, sy-vline,
  WA_DERTPIFACEINP-CONSTANT_VALUEC, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DERTPIFACEINP 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_DERTPIFACEINP 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_DERTPIFACEINP INTO WA_DERTPIFACEINP.


*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_DERTPIFACEINP_STR, 
MANDT TYPE STRING,
RTPINTERFACE TYPE STRING,
RTPCOMP TYPE STRING,
PARNUMBER TYPE STRING,
RTPCOMPCODE TYPE STRING,
DATEFROM TYPE STRING,
TIMEFROM TYPE STRING,
DATETO TYPE STRING,
TIMETO TYPE STRING,
CONSTANT_VALUE TYPE STRING,
CONSTANT_VALUEC TYPE STRING,
PROFILE TYPE STRING,
PROFROLE TYPE STRING,
PROFTEXT TYPE STRING,
PROFROLETXT TYPE STRING,
SEASON TYPE STRING,
DAYTYPE TYPE STRING,
TOUPERIOD TYPE STRING,
SEASONTEXT TYPE STRING,
DAYTYPETEXT TYPE STRING,
TOUPERTEXT TYPE STRING,
FORMPARTEXT TYPE STRING,
RTPCOMPCODETEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DERTPIFACEINP_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_DERTPIFACEINP_STR-MANDT sy-vline 
WA_DERTPIFACEINP_STR-RTPINTERFACE sy-vline 
WA_DERTPIFACEINP_STR-RTPCOMP sy-vline 
WA_DERTPIFACEINP_STR-PARNUMBER sy-vline 
WA_DERTPIFACEINP_STR-RTPCOMPCODE sy-vline 
WA_DERTPIFACEINP_STR-DATEFROM sy-vline 
WA_DERTPIFACEINP_STR-TIMEFROM sy-vline 
WA_DERTPIFACEINP_STR-DATETO sy-vline 
WA_DERTPIFACEINP_STR-TIMETO sy-vline 
WA_DERTPIFACEINP_STR-CONSTANT_VALUE sy-vline 
WA_DERTPIFACEINP_STR-CONSTANT_VALUEC sy-vline 
WA_DERTPIFACEINP_STR-PROFILE sy-vline 
WA_DERTPIFACEINP_STR-PROFROLE sy-vline 
WA_DERTPIFACEINP_STR-PROFTEXT sy-vline 
WA_DERTPIFACEINP_STR-PROFROLETXT sy-vline 
WA_DERTPIFACEINP_STR-SEASON sy-vline 
WA_DERTPIFACEINP_STR-DAYTYPE sy-vline 
WA_DERTPIFACEINP_STR-TOUPERIOD sy-vline 
WA_DERTPIFACEINP_STR-SEASONTEXT sy-vline 
WA_DERTPIFACEINP_STR-DAYTYPETEXT sy-vline 
WA_DERTPIFACEINP_STR-TOUPERTEXT sy-vline 
WA_DERTPIFACEINP_STR-FORMPARTEXT sy-vline 
WA_DERTPIFACEINP_STR-RTPCOMPCODETEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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