ABAP Select data from SAP table CATS_CO_RECEIVER into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CATS_CO_RECEIVER
*  INTO TABLE @DATA(IT_CATS_CO_RECEIVER2).
*--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_CATS_CO_RECEIVER INDEX 1 INTO DATA(WA_CATS_CO_RECEIVER2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CATS_CO_RECEIVER>-KOKRS = 1.
<CATS_CO_RECEIVER>-RKOSTL = 1.
<CATS_CO_RECEIVER>-RPROJ = 1.
<CATS_CO_RECEIVER>-RAUFNR = 1.
<CATS_CO_RECEIVER>-RNPLNR = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CATS_CO_RECEIVER-VORNR, sy-vline,
  WA_CATS_CO_RECEIVER-RKDAUF, sy-vline,
  WA_CATS_CO_RECEIVER-RKDPOS, sy-vline,
  WA_CATS_CO_RECEIVER-RKSTR, sy-vline,
  WA_CATS_CO_RECEIVER-RPRZNR, sy-vline,
  WA_CATS_CO_RECEIVER-PAOBJNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CATS_CO_RECEIVER 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_CATS_CO_RECEIVER 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_CATS_CO_RECEIVER INTO WA_CATS_CO_RECEIVER.


*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 RKOSTL
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CATS_CO_RECEIVER-RKOSTL
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATS_CO_RECEIVER-RKOSTL.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ABPSP, internal->external for field RPROJ
CALL FUNCTION 'CONVERSION_EXIT_ABPSP_OUTPUT'
  EXPORTING
    input =                      WA_CATS_CO_RECEIVER-RPROJ
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATS_CO_RECEIVER-RPROJ.
WRITE:/ 'New Value:', ld_input.

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field SERVICE_DOC_ID
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CATS_CO_RECEIVER-SERVICE_DOC_ID
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CATS_CO_RECEIVER-SERVICE_DOC_ID.
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_CATS_CO_RECEIVER_STR, 
KOKRS TYPE STRING,
RKOSTL TYPE STRING,
RPROJ TYPE STRING,
RAUFNR TYPE STRING,
RNPLNR TYPE STRING,
VORNR TYPE STRING,
RKDAUF TYPE STRING,
RKDPOS TYPE STRING,
RKSTR TYPE STRING,
RPRZNR TYPE STRING,
PAOBJNR TYPE STRING,
FUND TYPE STRING,
FUNC_AREA TYPE STRING,
GRANT_NBR TYPE STRING,
BEMOT TYPE STRING,
BUDGET_PD TYPE STRING,
SERVICE_DOC_TYPE TYPE STRING,
SERVICE_DOC_ID TYPE STRING,
SERVICE_DOC_ITEM_ID TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CATS_CO_RECEIVER_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_CATS_CO_RECEIVER_STR-KOKRS sy-vline 
WA_CATS_CO_RECEIVER_STR-RKOSTL sy-vline 
WA_CATS_CO_RECEIVER_STR-RPROJ sy-vline 
WA_CATS_CO_RECEIVER_STR-RAUFNR sy-vline 
WA_CATS_CO_RECEIVER_STR-RNPLNR sy-vline 
WA_CATS_CO_RECEIVER_STR-VORNR sy-vline 
WA_CATS_CO_RECEIVER_STR-RKDAUF sy-vline 
WA_CATS_CO_RECEIVER_STR-RKDPOS sy-vline 
WA_CATS_CO_RECEIVER_STR-RKSTR sy-vline 
WA_CATS_CO_RECEIVER_STR-RPRZNR sy-vline 
WA_CATS_CO_RECEIVER_STR-PAOBJNR sy-vline 
WA_CATS_CO_RECEIVER_STR-FUND sy-vline 
WA_CATS_CO_RECEIVER_STR-FUNC_AREA sy-vline 
WA_CATS_CO_RECEIVER_STR-GRANT_NBR sy-vline 
WA_CATS_CO_RECEIVER_STR-BEMOT sy-vline 
WA_CATS_CO_RECEIVER_STR-BUDGET_PD sy-vline 
WA_CATS_CO_RECEIVER_STR-SERVICE_DOC_TYPE sy-vline 
WA_CATS_CO_RECEIVER_STR-SERVICE_DOC_ID sy-vline 
WA_CATS_CO_RECEIVER_STR-SERVICE_DOC_ITEM_ID sy-vline      INTO ld_text SEPARATED BY SPACE.

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