ABAP Select data from SAP table RCBDUPACK into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCBDUPACK
*  INTO TABLE @DATA(IT_RCBDUPACK2).
*--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_RCBDUPACK INDEX 1 INTO DATA(WA_RCBDUPACK2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCBDUPACK>-INSTR_ENCL = 1.
<RCBDUPACK>-PACOD_IN = 1.
<RCBDUPACK>-PACOD_OUT = 1.
<RCBDUPACK>-PACOD_SGL = 1.
<RCBDUPACK>-MAX_QUANT_IN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCBDUPACK-U_MAX_QUANT_IN, sy-vline,
  WA_RCBDUPACK-FLG_MAX_QU_IN, sy-vline,
  WA_RCBDUPACK-MAX_QUANT_OUT, sy-vline,
  WA_RCBDUPACK-U_MAX_QUANT_OUT, sy-vline,
  WA_RCBDUPACK-FLG_MAX_QU_OUT, sy-vline,
  WA_RCBDUPACK-MAX_QUANT_SGL, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCBDUPACK 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_RCBDUPACK 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_RCBDUPACK INTO WA_RCBDUPACK.


*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 U_MAX_QUANT_IN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCBDUPACK-U_MAX_QUANT_IN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDUPACK-U_MAX_QUANT_IN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field U_MAX_QUANT_OUT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCBDUPACK-U_MAX_QUANT_OUT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDUPACK-U_MAX_QUANT_OUT.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field U_MAX_QUANT_SGL
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCBDUPACK-U_MAX_QUANT_SGL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDUPACK-U_MAX_QUANT_SGL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field U_MAX_GRS_WEIGHT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_RCBDUPACK-U_MAX_GRS_WEIGHT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCBDUPACK-U_MAX_GRS_WEIGHT.
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_RCBDUPACK_STR, 
INSTR_ENCL TYPE STRING,
PACOD_IN TYPE STRING,
PACOD_OUT TYPE STRING,
PACOD_SGL TYPE STRING,
MAX_QUANT_IN TYPE STRING,
U_MAX_QUANT_IN TYPE STRING,
FLG_MAX_QU_IN TYPE STRING,
MAX_QUANT_OUT TYPE STRING,
U_MAX_QUANT_OUT TYPE STRING,
FLG_MAX_QU_OUT TYPE STRING,
MAX_QUANT_SGL TYPE STRING,
U_MAX_QUANT_SGL TYPE STRING,
FLG_MAX_QU_SGL TYPE STRING,
MAX_GROSS_WEIGHT TYPE STRING,
U_MAX_GRS_WEIGHT TYPE STRING,
FLG_MAX_GRS_WGHT TYPE STRING,
IPALL TYPE STRING,
AGAUN TYPE STRING,
REGNO TYPE STRING,
AGRNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCBDUPACK_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_RCBDUPACK_STR-INSTR_ENCL sy-vline 
WA_RCBDUPACK_STR-PACOD_IN sy-vline 
WA_RCBDUPACK_STR-PACOD_OUT sy-vline 
WA_RCBDUPACK_STR-PACOD_SGL sy-vline 
WA_RCBDUPACK_STR-MAX_QUANT_IN sy-vline 
WA_RCBDUPACK_STR-U_MAX_QUANT_IN sy-vline 
WA_RCBDUPACK_STR-FLG_MAX_QU_IN sy-vline 
WA_RCBDUPACK_STR-MAX_QUANT_OUT sy-vline 
WA_RCBDUPACK_STR-U_MAX_QUANT_OUT sy-vline 
WA_RCBDUPACK_STR-FLG_MAX_QU_OUT sy-vline 
WA_RCBDUPACK_STR-MAX_QUANT_SGL sy-vline 
WA_RCBDUPACK_STR-U_MAX_QUANT_SGL sy-vline 
WA_RCBDUPACK_STR-FLG_MAX_QU_SGL sy-vline 
WA_RCBDUPACK_STR-MAX_GROSS_WEIGHT sy-vline 
WA_RCBDUPACK_STR-U_MAX_GRS_WEIGHT sy-vline 
WA_RCBDUPACK_STR-FLG_MAX_GRS_WGHT sy-vline 
WA_RCBDUPACK_STR-IPALL sy-vline 
WA_RCBDUPACK_STR-AGAUN sy-vline 
WA_RCBDUPACK_STR-REGNO sy-vline 
WA_RCBDUPACK_STR-AGRNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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