ABAP Select data from SAP table SCPR_DESCR into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM SCPR_DESCR
*  INTO TABLE @DATA(IT_SCPR_DESCR2).
*--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_SCPR_DESCR INDEX 1 INTO DATA(WA_SCPR_DESCR2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<SCPR_DESCR>-TABLENAME = 1.
<SCPR_DESCR>-RECNUMBER = 1.
<SCPR_DESCR>-POSITION = 1.
<SCPR_DESCR>-FIELDNAME = 1.
<SCPR_DESCR>-FIELDTEXT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_SCPR_DESCR-REPTEXT, sy-vline,
  WA_SCPR_DESCR-DATAELEM, sy-vline,
  WA_SCPR_DESCR-DOMNAME, sy-vline,
  WA_SCPR_DESCR-FLAG, sy-vline,
  WA_SCPR_DESCR-VTYPE, sy-vline,
  WA_SCPR_DESCR-DATATYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_SCPR_DESCR 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_SCPR_DESCR 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_SCPR_DESCR INTO WA_SCPR_DESCR.


*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 DTYPE, internal->external for field DATATYPE
CALL FUNCTION 'CONVERSION_EXIT_DTYPE_OUTPUT'
  EXPORTING
    input =                      WA_SCPR_DESCR-DATATYPE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_SCPR_DESCR-DATATYPE.
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_SCPR_DESCR_STR, 
TABLENAME TYPE STRING,
RECNUMBER TYPE STRING,
POSITION TYPE STRING,
FIELDNAME TYPE STRING,
FIELDTEXT TYPE STRING,
REPTEXT TYPE STRING,
DATAELEM TYPE STRING,
DOMNAME TYPE STRING,
FLAG TYPE STRING,
VTYPE TYPE STRING,
DATATYPE TYPE STRING,
KEYFLAG TYPE STRING,
READONLY TYPE STRING,
OUTPUTLEN TYPE STRING,
INTLEN TYPE STRING,
DECIMALS TYPE STRING,
CONVEXIT TYPE STRING,
SIGN TYPE STRING,
LOWERCASE TYPE STRING,
BASTABNAME TYPE STRING,
BASTABFLD TYPE STRING,
TXTTABFLDN TYPE STRING,
TEXTTABFLD TYPE STRING,
REFTABLE TYPE STRING,
REFFIELD TYPE STRING,
TABINOBJS TYPE STRING,
TABDDICFLG TYPE STRING,
MAXBCSLEN TYPE STRING,
VALUE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_SCPR_DESCR_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_SCPR_DESCR_STR-TABLENAME sy-vline 
WA_SCPR_DESCR_STR-RECNUMBER sy-vline 
WA_SCPR_DESCR_STR-POSITION sy-vline 
WA_SCPR_DESCR_STR-FIELDNAME sy-vline 
WA_SCPR_DESCR_STR-FIELDTEXT sy-vline 
WA_SCPR_DESCR_STR-REPTEXT sy-vline 
WA_SCPR_DESCR_STR-DATAELEM sy-vline 
WA_SCPR_DESCR_STR-DOMNAME sy-vline 
WA_SCPR_DESCR_STR-FLAG sy-vline 
WA_SCPR_DESCR_STR-VTYPE sy-vline 
WA_SCPR_DESCR_STR-DATATYPE sy-vline 
WA_SCPR_DESCR_STR-KEYFLAG sy-vline 
WA_SCPR_DESCR_STR-READONLY sy-vline 
WA_SCPR_DESCR_STR-OUTPUTLEN sy-vline 
WA_SCPR_DESCR_STR-INTLEN sy-vline 
WA_SCPR_DESCR_STR-DECIMALS sy-vline 
WA_SCPR_DESCR_STR-CONVEXIT sy-vline 
WA_SCPR_DESCR_STR-SIGN sy-vline 
WA_SCPR_DESCR_STR-LOWERCASE sy-vline 
WA_SCPR_DESCR_STR-BASTABNAME sy-vline 
WA_SCPR_DESCR_STR-BASTABFLD sy-vline 
WA_SCPR_DESCR_STR-TXTTABFLDN sy-vline 
WA_SCPR_DESCR_STR-TEXTTABFLD sy-vline 
WA_SCPR_DESCR_STR-REFTABLE sy-vline 
WA_SCPR_DESCR_STR-REFFIELD sy-vline 
WA_SCPR_DESCR_STR-TABINOBJS sy-vline 
WA_SCPR_DESCR_STR-TABDDICFLG sy-vline 
WA_SCPR_DESCR_STR-MAXBCSLEN sy-vline 
WA_SCPR_DESCR_STR-VALUE sy-vline      INTO ld_text SEPARATED BY SPACE.

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