ABAP Select data from SAP table COES into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM COES
*  INTO TABLE @DATA(IT_COES2).
*--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_COES INDEX 1 INTO DATA(WA_COES2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<COES>-MANDT = 1.
<COES>-OBJNR = 1.
<COES>-AWTYP = 1.
<COES>-AWKEY = 1.
<COES>-AWSYS = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_COES-AWPOS, sy-vline,
  WA_COES-WRTTP, sy-vline,
  WA_COES-VRGNG, sy-vline,
  WA_COES-GJAHR, sy-vline,
  WA_COES-PERIO, sy-vline,
  WA_COES-KSTAR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_COES 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_COES 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_COES INTO WA_COES.


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

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

*Conversion exit GJAHR, internal->external for field GJAHR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_COES-GJAHR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COES-GJAHR.
WRITE:/ 'New Value:', ld_input.

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

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

*Conversion exit ALPHA, internal->external for field BELNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_COES-BELNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_COES-BELNR.
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_COES_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
AWTYP TYPE STRING,
AWKEY TYPE STRING,
AWSYS TYPE STRING,
AWPOS TYPE STRING,
WRTTP TYPE STRING,
VRGNG TYPE STRING,
GJAHR TYPE STRING,
PERIO TYPE STRING,
KSTAR TYPE STRING,
POSIT TYPE STRING,
TWAER TYPE STRING,
WTGBTR TYPE STRING,
WOGBTR TYPE STRING,
WKGBTR TYPE STRING,
KOKRS TYPE STRING,
OWAER TYPE STRING,
WRTTP_PLAN TYPE STRING,
BELNR TYPE STRING,
BELTP TYPE STRING,
HRKFT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_COES_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_COES_STR-MANDT sy-vline 
WA_COES_STR-OBJNR sy-vline 
WA_COES_STR-AWTYP sy-vline 
WA_COES_STR-AWKEY sy-vline 
WA_COES_STR-AWSYS sy-vline 
WA_COES_STR-AWPOS sy-vline 
WA_COES_STR-WRTTP sy-vline 
WA_COES_STR-VRGNG sy-vline 
WA_COES_STR-GJAHR sy-vline 
WA_COES_STR-PERIO sy-vline 
WA_COES_STR-KSTAR sy-vline 
WA_COES_STR-POSIT sy-vline 
WA_COES_STR-TWAER sy-vline 
WA_COES_STR-WTGBTR sy-vline 
WA_COES_STR-WOGBTR sy-vline 
WA_COES_STR-WKGBTR sy-vline 
WA_COES_STR-KOKRS sy-vline 
WA_COES_STR-OWAER sy-vline 
WA_COES_STR-WRTTP_PLAN sy-vline 
WA_COES_STR-BELNR sy-vline 
WA_COES_STR-BELTP sy-vline 
WA_COES_STR-HRKFT sy-vline      INTO ld_text SEPARATED BY SPACE.

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