ABAP Select data from SAP table /DSD/RP_TOP into internal table

Get Example source ABAP code based on a different SAP table
  

Below is a number of ABAP code snippets to demonstrate how to select data from SAP /DSD/RP_TOP 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 /DSD/RP_TOP. 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 /DSD/RP_TOP 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_/DSD/RP_TOP TYPE STANDARD TABLE OF /DSD/RP_TOP,
      WA_/DSD/RP_TOP TYPE /DSD/RP_TOP,
      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: </DSD/RP_TOP> TYPE /DSD/RP_TOP.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /DSD/RP_TOP
  INTO TABLE IT_/DSD/RP_TOP.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /DSD/RP_TOP
*  INTO TABLE @DATA(IT_/DSD/RP_TOP2).
*--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_/DSD/RP_TOP INDEX 1 INTO DATA(WA_/DSD/RP_TOP2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/DSD/RP_TOP ASSIGNING </DSD/RP_TOP>.
*To update a field value using a field symbol simply change the value via the field symbol pointer
</DSD/RP_TOP>-MANDT = 1.
</DSD/RP_TOP>-ROUTE = 1.
</DSD/RP_TOP>-VPTYP = 1.
</DSD/RP_TOP>-LFDNR = 1.
</DSD/RP_TOP>-SEQUENCENR = 1.
ENDLOOP.

LOOP AT IT_/DSD/RP_TOP INTO WA_/DSD/RP_TOP.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/DSD/RP_TOP-DRIVER1, sy-vline,
WA_/DSD/RP_TOP-DRIVER2, sy-vline,
WA_/DSD/RP_TOP-TRUCK, sy-vline,
WA_/DSD/RP_TOP-TRAIL, sy-vline,
WA_/DSD/RP_TOP-STOPS, sy-vline,
WA_/DSD/RP_TOP-MAXTIME, sy-vline.
ENDLOOP. *Add any further fields from structure WA_/DSD/RP_TOP 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_/DSD/RP_TOP 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_/DSD/RP_TOP INTO WA_/DSD/RP_TOP. *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 ALPHA, internal->external for field DRIVER1 CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_/DSD/RP_TOP-DRIVER1 IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_/DSD/RP_TOP-DRIVER1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field DRIVER2 CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_/DSD/RP_TOP-DRIVER2 IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_/DSD/RP_TOP-DRIVER2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TRUCK CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_/DSD/RP_TOP-TRUCK IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_/DSD/RP_TOP-TRUCK.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field TRAIL CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT' EXPORTING input = WA_/DSD/RP_TOP-TRAIL IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_/DSD/RP_TOP-TRAIL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit TSTRN, internal->external for field MAXTIME CALL FUNCTION 'CONVERSION_EXIT_TSTRN_OUTPUT' EXPORTING input = WA_/DSD/RP_TOP-MAXTIME IMPORTING output = ld_input.
WRITE:/ 'Org Value:', WA_/DSD/RP_TOP-MAXTIME.
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_/DSD/RP_TOP_STR,
MANDT TYPE STRING,
ROUTE TYPE STRING,
VPTYP TYPE STRING,
LFDNR TYPE STRING,
SEQUENCENR TYPE STRING,
DRIVER1 TYPE STRING,
DRIVER2 TYPE STRING,
TRUCK TYPE STRING,
TRAIL TYPE STRING,
STOPS TYPE STRING,
MAXTIME TYPE STRING,
LOCKED TYPE STRING,END OF T_EKKO_STR. DATA: WA_/DSD/RP_TOP_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_/DSD/RP_TOP_STR-MANDT sy-vline
WA_/DSD/RP_TOP_STR-ROUTE sy-vline
WA_/DSD/RP_TOP_STR-VPTYP sy-vline
WA_/DSD/RP_TOP_STR-LFDNR sy-vline
WA_/DSD/RP_TOP_STR-SEQUENCENR sy-vline
WA_/DSD/RP_TOP_STR-DRIVER1 sy-vline
WA_/DSD/RP_TOP_STR-DRIVER2 sy-vline
WA_/DSD/RP_TOP_STR-TRUCK sy-vline
WA_/DSD/RP_TOP_STR-TRAIL sy-vline
WA_/DSD/RP_TOP_STR-STOPS sy-vline
WA_/DSD/RP_TOP_STR-MAXTIME sy-vline
WA_/DSD/RP_TOP_STR-LOCKED sy-vline INTO ld_text SEPARATED BY SPACE. *Add any further fields from structure WA_EKKO_STR you want to CONCATENATE... ENDLOOP. ENDFORM.