ABAP Select data from SAP table KSEL_COOI into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM KSEL_COOI
*  INTO TABLE @DATA(IT_KSEL_COOI2).
*--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_KSEL_COOI INDEX 1 INTO DATA(WA_KSEL_COOI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<KSEL_COOI>-VRGNG = 1.
<KSEL_COOI>-UNAME = 1.
<KSEL_COOI>-LIFNR = 1.
<KSEL_COOI>-BLDAT = 1.
<KSEL_COOI>-REFBT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_KSEL_COOI-REFBN, sy-vline,
  WA_KSEL_COOI-SGTXT, sy-vline,
  WA_KSEL_COOI-WKGBTR, sy-vline,
  WA_KSEL_COOI-MEGBTR, sy-vline,
  WA_KSEL_COOI-MEINH, sy-vline,
  WA_KSEL_COOI-MBGBTR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_KSEL_COOI 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_KSEL_COOI 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_KSEL_COOI INTO WA_KSEL_COOI.


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

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

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_KSEL_COOI-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_KSEL_COOI-MATNR.
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_KSEL_COOI_STR, 
VRGNG TYPE STRING,
UNAME TYPE STRING,
LIFNR TYPE STRING,
BLDAT TYPE STRING,
REFBT TYPE STRING,
REFBN TYPE STRING,
SGTXT TYPE STRING,
WKGBTR TYPE STRING,
MEGBTR TYPE STRING,
MEINH TYPE STRING,
MBGBTR TYPE STRING,
MEINB TYPE STRING,
BUKRS TYPE STRING,
MATKL TYPE STRING,
MATNR TYPE STRING,END OF T_EKKO_STR.
DATA: WA_KSEL_COOI_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_KSEL_COOI_STR-VRGNG sy-vline 
WA_KSEL_COOI_STR-UNAME sy-vline 
WA_KSEL_COOI_STR-LIFNR sy-vline 
WA_KSEL_COOI_STR-BLDAT sy-vline 
WA_KSEL_COOI_STR-REFBT sy-vline 
WA_KSEL_COOI_STR-REFBN sy-vline 
WA_KSEL_COOI_STR-SGTXT sy-vline 
WA_KSEL_COOI_STR-WKGBTR sy-vline 
WA_KSEL_COOI_STR-MEGBTR sy-vline 
WA_KSEL_COOI_STR-MEINH sy-vline 
WA_KSEL_COOI_STR-MBGBTR sy-vline 
WA_KSEL_COOI_STR-MEINB sy-vline 
WA_KSEL_COOI_STR-BUKRS sy-vline 
WA_KSEL_COOI_STR-MATKL sy-vline 
WA_KSEL_COOI_STR-MATNR sy-vline      INTO ld_text SEPARATED BY SPACE.

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