ABAP Select data from SAP table RCOSU into internal table

Get Example source ABAP code based on a different SAP table
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Below is a number of ABAP code snippets to demonstrate how to select data from SAP RCOSU 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 RCOSU. 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 RCOSU 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_RCOSU TYPE STANDARD TABLE OF RCOSU,
      WA_RCOSU TYPE RCOSU,
      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: <RCOSU> TYPE RCOSU.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM RCOSU
*  INTO TABLE @DATA(IT_RCOSU2).
*--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_RCOSU INDEX 1 INTO DATA(WA_RCOSU2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<RCOSU>-POSNR = 1.
<RCOSU>-MATNR = 1.
<RCOSU>-MATXT = 1.
<RCOSU>-BDMNG = 1.
<RCOSU>-MEINS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_RCOSU-POSTP, sy-vline,
  WA_RCOSU-LGORT, sy-vline,
  WA_RCOSU-WERKS, sy-vline,
  WA_RCOSU-CHARG, sy-vline,
  WA_RCOSU-VORNR, sy-vline,
  WA_RCOSU-UVORN, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_RCOSU 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_RCOSU 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_RCOSU INTO WA_RCOSU.


*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 NUMCV, internal->external for field POSNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCOSU-POSNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOSU-POSNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_RCOSU-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOSU-MATNR.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit NUMCV, internal->external for field VORNR
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCOSU-VORNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOSU-VORNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit NUMCV, internal->external for field UVORN
CALL FUNCTION 'CONVERSION_EXIT_NUMCV_OUTPUT'
  EXPORTING
    input =                      WA_RCOSU-UVORN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOSU-UVORN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field APLFL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_RCOSU-APLFL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_RCOSU-APLFL.
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_RCOSU_STR, 
POSNR TYPE STRING,
MATNR TYPE STRING,
MATXT TYPE STRING,
BDMNG TYPE STRING,
MEINS TYPE STRING,
POSTP TYPE STRING,
LGORT TYPE STRING,
WERKS TYPE STRING,
CHARG TYPE STRING,
VORNR TYPE STRING,
UVORN TYPE STRING,
APLFL TYPE STRING,
DUMPS TYPE STRING,
RGEKZ TYPE STRING,
SCHGT TYPE STRING,
KZKUP TYPE STRING,
ARBPL TYPE STRING,
STEUS TYPE STRING,
KTSCH TYPE STRING,
LTXA1 TYPE STRING,
SSAVD TYPE STRING,
SSEVD TYPE STRING,
VSTTXT TYPE STRING,
STATUS1 TYPE STRING,
STATUS2 TYPE STRING,
STATUS3 TYPE STRING,
STATUS4 TYPE STRING,
RSPOS TYPE STRING,END OF T_EKKO_STR.
DATA: WA_RCOSU_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_RCOSU_STR-POSNR sy-vline 
WA_RCOSU_STR-MATNR sy-vline 
WA_RCOSU_STR-MATXT sy-vline 
WA_RCOSU_STR-BDMNG sy-vline 
WA_RCOSU_STR-MEINS sy-vline 
WA_RCOSU_STR-POSTP sy-vline 
WA_RCOSU_STR-LGORT sy-vline 
WA_RCOSU_STR-WERKS sy-vline 
WA_RCOSU_STR-CHARG sy-vline 
WA_RCOSU_STR-VORNR sy-vline 
WA_RCOSU_STR-UVORN sy-vline 
WA_RCOSU_STR-APLFL sy-vline 
WA_RCOSU_STR-DUMPS sy-vline 
WA_RCOSU_STR-RGEKZ sy-vline 
WA_RCOSU_STR-SCHGT sy-vline 
WA_RCOSU_STR-KZKUP sy-vline 
WA_RCOSU_STR-ARBPL sy-vline 
WA_RCOSU_STR-STEUS sy-vline 
WA_RCOSU_STR-KTSCH sy-vline 
WA_RCOSU_STR-LTXA1 sy-vline 
WA_RCOSU_STR-SSAVD sy-vline 
WA_RCOSU_STR-SSEVD sy-vline 
WA_RCOSU_STR-VSTTXT sy-vline 
WA_RCOSU_STR-STATUS1 sy-vline 
WA_RCOSU_STR-STATUS2 sy-vline 
WA_RCOSU_STR-STATUS3 sy-vline 
WA_RCOSU_STR-STATUS4 sy-vline 
WA_RCOSU_STR-RSPOS sy-vline      INTO ld_text SEPARATED BY SPACE.

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