ABAP Select data from SAP table ICAICOETMPL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM ICAICOETMPL
*  INTO TABLE @DATA(IT_ICAICOETMPL2).
*--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_ICAICOETMPL INDEX 1 INTO DATA(WA_ICAICOETMPL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<ICAICOETMPL>-MANDT = 1.
<ICAICOETMPL>-MATCHINGMETHODID = 1.
<ICAICOETMPL>-MATCHINGDOCUMENT = 1.
<ICAICOETMPL>-MATCHINGDOCUMENTITEM = 1.
<ICAICOETMPL>-COMPANY = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_ICAICOETMPL-TRADINGPARTNER, sy-vline,
  WA_ICAICOETMPL-MATCHINGASSIGNMENTNUMBER, sy-vline,
  WA_ICAICOETMPL-MATCHINGMETHODDESC, sy-vline,
  WA_ICAICOETMPL-MATCHINGRULEID, sy-vline,
  WA_ICAICOETMPL-MATCHINGRULEDESC, sy-vline,
  WA_ICAICOETMPL-MATCHINGREASONCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_ICAICOETMPL 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_ICAICOETMPL 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_ICAICOETMPL INTO WA_ICAICOETMPL.


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

*Conversion exit ALPHA, internal->external for field TRADINGPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_ICAICOETMPL-TRADINGPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_ICAICOETMPL-TRADINGPARTNER.
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_ICAICOETMPL_STR, 
MANDT TYPE STRING,
MATCHINGMETHODID TYPE STRING,
MATCHINGDOCUMENT TYPE STRING,
MATCHINGDOCUMENTITEM TYPE STRING,
COMPANY TYPE STRING,
TRADINGPARTNER TYPE STRING,
MATCHINGASSIGNMENTNUMBER TYPE STRING,
MATCHINGMETHODDESC TYPE STRING,
MATCHINGRULEID TYPE STRING,
MATCHINGRULEDESC TYPE STRING,
MATCHINGREASONCODE TYPE STRING,
MATCHINGREASONCODEDESC TYPE STRING,
FISCALYEARPERIOD TYPE STRING,
RECONCILIATIONCASEID TYPE STRING,
RECONCILIATIONCASEDESC TYPE STRING,
LOGGEDINUSER TYPE STRING,
USERDESCRIPTION TYPE STRING,END OF T_EKKO_STR.
DATA: WA_ICAICOETMPL_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_ICAICOETMPL_STR-MANDT sy-vline 
WA_ICAICOETMPL_STR-MATCHINGMETHODID sy-vline 
WA_ICAICOETMPL_STR-MATCHINGDOCUMENT sy-vline 
WA_ICAICOETMPL_STR-MATCHINGDOCUMENTITEM sy-vline 
WA_ICAICOETMPL_STR-COMPANY sy-vline 
WA_ICAICOETMPL_STR-TRADINGPARTNER sy-vline 
WA_ICAICOETMPL_STR-MATCHINGASSIGNMENTNUMBER sy-vline 
WA_ICAICOETMPL_STR-MATCHINGMETHODDESC sy-vline 
WA_ICAICOETMPL_STR-MATCHINGRULEID sy-vline 
WA_ICAICOETMPL_STR-MATCHINGRULEDESC sy-vline 
WA_ICAICOETMPL_STR-MATCHINGREASONCODE sy-vline 
WA_ICAICOETMPL_STR-MATCHINGREASONCODEDESC sy-vline 
WA_ICAICOETMPL_STR-FISCALYEARPERIOD sy-vline 
WA_ICAICOETMPL_STR-RECONCILIATIONCASEID sy-vline 
WA_ICAICOETMPL_STR-RECONCILIATIONCASEDESC sy-vline 
WA_ICAICOETMPL_STR-LOGGEDINUSER sy-vline 
WA_ICAICOETMPL_STR-USERDESCRIPTION sy-vline      INTO ld_text SEPARATED BY SPACE.

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