ABAP Select data from SAP table P01P_RPSPSTD0_FORSCH into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP P01P_RPSPSTD0_FORSCH 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 P01P_RPSPSTD0_FORSCH. 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 P01P_RPSPSTD0_FORSCH 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_P01P_RPSPSTD0_FORSCH TYPE STANDARD TABLE OF P01P_RPSPSTD0_FORSCH,
      WA_P01P_RPSPSTD0_FORSCH TYPE P01P_RPSPSTD0_FORSCH,
      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: <P01P_RPSPSTD0_FORSCH> TYPE P01P_RPSPSTD0_FORSCH.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_P01P_RPSPSTD0_FORSCH.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM P01P_RPSPSTD0_FORSCH
  INTO TABLE IT_P01P_RPSPSTD0_FORSCH.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM P01P_RPSPSTD0_FORSCH
*  INTO TABLE @DATA(IT_P01P_RPSPSTD0_FORSCH2).
*--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_P01P_RPSPSTD0_FORSCH INDEX 1 INTO DATA(WA_P01P_RPSPSTD0_FORSCH2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_P01P_RPSPSTD0_FORSCH ASSIGNING <P01P_RPSPSTD0_FORSCH>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<P01P_RPSPSTD0_FORSCH>-LAND = 1.
<P01P_RPSPSTD0_FORSCH>-BESCHBER = 1.
<P01P_RPSPSTD0_FORSCH>-BERSTNR = 1.
<P01P_RPSPSTD0_FORSCH>-LFDNR = 1.
<P01P_RPSPSTD0_FORSCH>-STAUFGB = 1.

ENDLOOP.

LOOP AT IT_P01P_RPSPSTD0_FORSCH INTO WA_P01P_RPSPSTD0_FORSCH.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_P01P_RPSPSTD0_FORSCH-KAUFGB, sy-vline,
  WA_P01P_RPSPSTD0_FORSCH-GESCH, sy-vline,
  WA_P01P_RPSPSTD0_FORSCH-GEBMON, sy-vline,
  WA_P01P_RPSPSTD0_FORSCH-GEBJAHR, sy-vline,
  WA_P01P_RPSPSTD0_FORSCH-BESCHUMF, sy-vline,
  WA_P01P_RPSPSTD0_FORSCH-DIENSTD, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_P01P_RPSPSTD0_FORSCH 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_P01P_RPSPSTD0_FORSCH 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_P01P_RPSPSTD0_FORSCH INTO WA_P01P_RPSPSTD0_FORSCH.


*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_P01P_RPSPSTD0_FORSCH_STR, 
LAND TYPE STRING,
BESCHBER TYPE STRING,
BERSTNR TYPE STRING,
LFDNR TYPE STRING,
STAUFGB TYPE STRING,
KAUFGB TYPE STRING,
GESCH TYPE STRING,
GEBMON TYPE STRING,
GEBJAHR TYPE STRING,
BESCHUMF TYPE STRING,
DIENSTD TYPE STRING,
DIENSTA TYPE STRING,
LBGRUPPE TYPE STRING,
EINSTUF TYPE STRING,
DIOLAND TYPE STRING,
DIORBEZ TYPE STRING,
DIOKREIS TYPE STRING,
DIOGEM TYPE STRING,
GEMGRKL TYPE STRING,
KAPLHAUS TYPE STRING,
DLASTUFE TYPE STRING,
FAMSTOZ TYPE STRING,
KIANTOZ TYPE STRING,
WOHNLAND TYPE STRING,
WOHNRBEZ TYPE STRING,
WOHNKREIS TYPE STRING,
WOHNGEM TYPE STRING,
ARBFAKT TYPE STRING,
ARBFAKTU2 TYPE STRING,
PLZ TYPE STRING,
LEER TYPE STRING,
GKZNAME TYPE STRING,
VWDBR TYPE STRING,
BEFHG TYPE STRING,
LIEFERANT TYPE STRING,
FILLER TYPE STRING,
STEUBRU TYPE STRING,
OWKZN TYPE STRING,
STAAT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_P01P_RPSPSTD0_FORSCH_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_P01P_RPSPSTD0_FORSCH_STR-LAND sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-BESCHBER sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-BERSTNR sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-LFDNR sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-STAUFGB sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-KAUFGB sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-GESCH sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-GEBMON sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-GEBJAHR sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-BESCHUMF sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-DIENSTD sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-DIENSTA sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-LBGRUPPE sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-EINSTUF sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-DIOLAND sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-DIORBEZ sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-DIOKREIS sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-DIOGEM sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-GEMGRKL sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-KAPLHAUS sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-DLASTUFE sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-FAMSTOZ sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-KIANTOZ sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-WOHNLAND sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-WOHNRBEZ sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-WOHNKREIS sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-WOHNGEM sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-ARBFAKT sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-ARBFAKTU2 sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-PLZ sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-LEER sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-GKZNAME sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-VWDBR sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-BEFHG sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-LIEFERANT sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-FILLER sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-STEUBRU sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-OWKZN sy-vline 
WA_P01P_RPSPSTD0_FORSCH_STR-STAAT sy-vline      INTO ld_text SEPARATED BY SPACE.

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