ABAP Select data from SAP table CO23I into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP CO23I 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 CO23I. 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 CO23I 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_CO23I TYPE STANDARD TABLE OF CO23I,
      WA_CO23I TYPE CO23I,
      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: <CO23I> TYPE CO23I.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_CO23I.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM CO23I
  INTO TABLE IT_CO23I.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CO23I
*  INTO TABLE @DATA(IT_CO23I2).
*--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_CO23I INDEX 1 INTO DATA(WA_CO23I2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_CO23I ASSIGNING <CO23I>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CO23I>-ZLENR = 1.
<CO23I>-SOBJNR = 1.
<CO23I>-OBJNR = 1.
<CO23I>-OBJNR_STAT = 1.
<CO23I>-GRTYP = 1.

ENDLOOP.

LOOP AT IT_CO23I INTO WA_CO23I.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CO23I-KATYP, sy-vline,
  WA_CO23I-VKSTA, sy-vline,
  WA_CO23I-WKGBTR, sy-vline,
  WA_CO23I-WKFBTR, sy-vline,
  WA_CO23I-WAERS, sy-vline,
  WA_CO23I-WOGBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CO23I 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_CO23I 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_CO23I INTO WA_CO23I.


*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 KATYP
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CO23I-KATYP
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CO23I-KATYP.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VKSTA
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CO23I-VKSTA
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CO23I-VKSTA.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_CO23I-WKGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CO23I-WKGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WKFBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_CO23I-WKFBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CO23I-WKFBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WOGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_CO23I-WOGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CO23I-WOGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit AC152, internal->external for field WSGBTR
CALL FUNCTION 'CONVERSION_EXIT_AC152_OUTPUT'
  EXPORTING
    input =                      WA_CO23I-WSGBTR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CO23I-WSGBTR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CO23I-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CO23I-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field SMEIN
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CO23I-SMEIN
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CO23I-SMEIN.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field AUSEH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_CO23I-AUSEH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CO23I-AUSEH.
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_CO23I_STR, 
ZLENR TYPE STRING,
SOBJNR TYPE STRING,
OBJNR TYPE STRING,
OBJNR_STAT TYPE STRING,
GRTYP TYPE STRING,
KATYP TYPE STRING,
VKSTA TYPE STRING,
WKGBTR TYPE STRING,
WKFBTR TYPE STRING,
WAERS TYPE STRING,
WOGBTR TYPE STRING,
OWAER TYPE STRING,
WSGBTR TYPE STRING,
SWAER TYPE STRING,
MEGBTR TYPE STRING,
LSTBTR TYPE STRING,
MEINH TYPE STRING,
MESBTR TYPE STRING,
SMEIN TYPE STRING,
AUSBTR TYPE STRING,
AUSEH TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CO23I_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_CO23I_STR-ZLENR sy-vline 
WA_CO23I_STR-SOBJNR sy-vline 
WA_CO23I_STR-OBJNR sy-vline 
WA_CO23I_STR-OBJNR_STAT sy-vline 
WA_CO23I_STR-GRTYP sy-vline 
WA_CO23I_STR-KATYP sy-vline 
WA_CO23I_STR-VKSTA sy-vline 
WA_CO23I_STR-WKGBTR sy-vline 
WA_CO23I_STR-WKFBTR sy-vline 
WA_CO23I_STR-WAERS sy-vline 
WA_CO23I_STR-WOGBTR sy-vline 
WA_CO23I_STR-OWAER sy-vline 
WA_CO23I_STR-WSGBTR sy-vline 
WA_CO23I_STR-SWAER sy-vline 
WA_CO23I_STR-MEGBTR sy-vline 
WA_CO23I_STR-LSTBTR sy-vline 
WA_CO23I_STR-MEINH sy-vline 
WA_CO23I_STR-MESBTR sy-vline 
WA_CO23I_STR-SMEIN sy-vline 
WA_CO23I_STR-AUSBTR sy-vline 
WA_CO23I_STR-AUSEH sy-vline      INTO ld_text SEPARATED BY SPACE.

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