ABAP Select data from SAP table COCOMP into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COCOMP
*  INTO TABLE @DATA(IT_COCOMP2).
*--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_COCOMP INDEX 1 INTO DATA(WA_COCOMP2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COCOMP>-NAME = 1.
<COCOMP>-NAME2 = 1.
<COCOMP>-STATUS = 1.
<COCOMP>-COMMNT = 1.
<COCOMP>-LANGUAGE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COCOMP-LANGTEXT, sy-vline,
  WA_COCOMP-PACKG, sy-vline,
  WA_COCOMP-CNAM, sy-vline,
  WA_COCOMP-CDAT, sy-vline,
  WA_COCOMP-CTIM, sy-vline,
  WA_COCOMP-UNAM, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COCOMP 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_COCOMP 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_COCOMP INTO WA_COCOMP.


*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 ISOLA, internal->external for field LANGUAGE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_COCOMP-LANGUAGE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COCOMP-LANGUAGE.
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_COCOMP_STR, 
NAME TYPE STRING,
NAME2 TYPE STRING,
STATUS TYPE STRING,
COMMNT TYPE STRING,
LANGUAGE TYPE STRING,
LANGTEXT TYPE STRING,
PACKG TYPE STRING,
CNAM TYPE STRING,
CDAT TYPE STRING,
CTIM TYPE STRING,
UNAM TYPE STRING,
UDAT TYPE STRING,
UTIM TYPE STRING,
FPRO TYPE STRING,
FLAY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COCOMP_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_COCOMP_STR-NAME sy-vline 
WA_COCOMP_STR-NAME2 sy-vline 
WA_COCOMP_STR-STATUS sy-vline 
WA_COCOMP_STR-COMMNT sy-vline 
WA_COCOMP_STR-LANGUAGE sy-vline 
WA_COCOMP_STR-LANGTEXT sy-vline 
WA_COCOMP_STR-PACKG sy-vline 
WA_COCOMP_STR-CNAM sy-vline 
WA_COCOMP_STR-CDAT sy-vline 
WA_COCOMP_STR-CTIM sy-vline 
WA_COCOMP_STR-UNAM sy-vline 
WA_COCOMP_STR-UDAT sy-vline 
WA_COCOMP_STR-UTIM sy-vline 
WA_COCOMP_STR-FPRO sy-vline 
WA_COCOMP_STR-FLAY sy-vline      INTO ld_text SEPARATED BY SPACE.

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