ABAP Select data from SAP table /ACCGO/CAK_S_EXPENSES_STL into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /ACCGO/CAK_S_EXPENSES_STL 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 /ACCGO/CAK_S_EXPENSES_STL. 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 /ACCGO/CAK_S_EXPENSES_STL 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_/ACCGO/CAK_S_EXPENSES_STL TYPE STANDARD TABLE OF /ACCGO/CAK_S_EXPENSES_STL,
      WA_/ACCGO/CAK_S_EXPENSES_STL TYPE /ACCGO/CAK_S_EXPENSES_STL,
      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: </ACCGO/CAK_S_EXPENSES_STL> TYPE /ACCGO/CAK_S_EXPENSES_STL.

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

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /ACCGO/CAK_S_EXPENSES_STL
  INTO TABLE IT_/ACCGO/CAK_S_EXPENSES_STL.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /ACCGO/CAK_S_EXPENSES_STL
*  INTO TABLE @DATA(IT_/ACCGO/CAK_S_EXPENSES_STL2).
*--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_/ACCGO/CAK_S_EXPENSES_STL INDEX 1 INTO DATA(WA_/ACCGO/CAK_S_EXPENSES_STL2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/ACCGO/CAK_S_EXPENSES_STL ASSIGNING </ACCGO/CAK_S_EXPENSES_STL>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</ACCGO/CAK_S_EXPENSES_STL>-TRADING_CONTRACT_NUMBER = 1.
</ACCGO/CAK_S_EXPENSES_STL>-TRADING_CONTRACT_TYPE = 1.
</ACCGO/CAK_S_EXPENSES_STL>-APPLICATION = 1.
</ACCGO/CAK_S_EXPENSES_STL>-CONDITION_TABLE_NUMBER = 1.
</ACCGO/CAK_S_EXPENSES_STL>-CONDITION_SEQ_NUMBER = 1.

ENDLOOP.

LOOP AT IT_/ACCGO/CAK_S_EXPENSES_STL INTO WA_/ACCGO/CAK_S_EXPENSES_STL.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/ACCGO/CAK_S_EXPENSES_STL-CONDITION_RECORD_NUM, sy-vline,
  WA_/ACCGO/CAK_S_EXPENSES_STL-EXPENSE_CLASS_GROUP, sy-vline,
  WA_/ACCGO/CAK_S_EXPENSES_STL-EXPENSE_CLASS_GROUP_TEXT, sy-vline,
  WA_/ACCGO/CAK_S_EXPENSES_STL-EXPENSE_CLASS, sy-vline,
  WA_/ACCGO/CAK_S_EXPENSES_STL-EXPENSE_CLASS_TEXT, sy-vline,
  WA_/ACCGO/CAK_S_EXPENSES_STL-ACCOUNT_TYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/ACCGO/CAK_S_EXPENSES_STL 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_/ACCGO/CAK_S_EXPENSES_STL 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_/ACCGO/CAK_S_EXPENSES_STL INTO WA_/ACCGO/CAK_S_EXPENSES_STL.


*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 TRADING_CONTRACT_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/CAK_S_EXPENSES_STL-TRADING_CONTRACT_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/CAK_S_EXPENSES_STL-TRADING_CONTRACT_NUMBER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit KOTAB, internal->external for field CONDITION_TABLE_NUMBER
CALL FUNCTION 'CONVERSION_EXIT_KOTAB_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/CAK_S_EXPENSES_STL-CONDITION_TABLE_NUMBER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/CAK_S_EXPENSES_STL-CONDITION_TABLE_NUMBER.
WRITE:/ 'New Value:', ld_input.

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

*Conversion exit CUNIT, internal->external for field CONDITION_DOC_UNIT
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_/ACCGO/CAK_S_EXPENSES_STL-CONDITION_DOC_UNIT
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_/ACCGO/CAK_S_EXPENSES_STL-CONDITION_DOC_UNIT.
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_/ACCGO/CAK_S_EXPENSES_STL_STR, 
TRADING_CONTRACT_NUMBER TYPE STRING,
TRADING_CONTRACT_TYPE TYPE STRING,
APPLICATION TYPE STRING,
CONDITION_TABLE_NUMBER TYPE STRING,
CONDITION_SEQ_NUMBER TYPE STRING,
CONDITION_RECORD_NUM TYPE STRING,
EXPENSE_CLASS_GROUP TYPE STRING,
EXPENSE_CLASS_GROUP_TEXT TYPE STRING,
EXPENSE_CLASS TYPE STRING,
EXPENSE_CLASS_TEXT TYPE STRING,
ACCOUNT_TYPE TYPE STRING,
ACCOUNT_TYPE_TEXT TYPE STRING,
POSTING_TYPE TYPE STRING,
POSTING_TYPE_TEXT TYPE STRING,
CONDITION_TYPE TYPE STRING,
CONDITION_TYPE_TEXT TYPE STRING,
PARTNER TYPE STRING,
PARTNER_NAME TYPE STRING,
AMOUNT_OR_PERCENTAGE TYPE STRING,
CURRENCY_KEY TYPE STRING,
PRICING_UNIT TYPE STRING,
CONDITION_DOC_UNIT TYPE STRING,
EXPENSE_TYPE TYPE STRING,
CONDITION_GROUP TYPE STRING,
CONDITION_GROUP_TEXT TYPE STRING,
PAYMENT_KEY TYPE STRING,
FIXED_VALUE_DATE TYPE STRING,
TEXT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/ACCGO/CAK_S_EXPENSES_STL_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_/ACCGO/CAK_S_EXPENSES_STL_STR-TRADING_CONTRACT_NUMBER sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-TRADING_CONTRACT_TYPE sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-APPLICATION sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-CONDITION_TABLE_NUMBER sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-CONDITION_SEQ_NUMBER sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-CONDITION_RECORD_NUM sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-EXPENSE_CLASS_GROUP sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-EXPENSE_CLASS_GROUP_TEXT sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-EXPENSE_CLASS sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-EXPENSE_CLASS_TEXT sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-ACCOUNT_TYPE sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-ACCOUNT_TYPE_TEXT sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-POSTING_TYPE sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-POSTING_TYPE_TEXT sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-CONDITION_TYPE sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-CONDITION_TYPE_TEXT sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-PARTNER sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-PARTNER_NAME sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-AMOUNT_OR_PERCENTAGE sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-CURRENCY_KEY sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-PRICING_UNIT sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-CONDITION_DOC_UNIT sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-EXPENSE_TYPE sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-CONDITION_GROUP sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-CONDITION_GROUP_TEXT sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-PAYMENT_KEY sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-FIXED_VALUE_DATE sy-vline 
WA_/ACCGO/CAK_S_EXPENSES_STL_STR-TEXT sy-vline      INTO ld_text SEPARATED BY SPACE.

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