ABAP Select data from SAP table CSTCPACTLFLW into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSTCPACTLFLW
*  INTO TABLE @DATA(IT_CSTCPACTLFLW2).
*--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_CSTCPACTLFLW INDEX 1 INTO DATA(WA_CSTCPACTLFLW2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSTCPACTLFLW>-MANDT = 1.
<CSTCPACTLFLW>-CASHPOSITIONPROFILE = 1.
<CSTCPACTLFLW>-ORIGINSYSTEM = 1.
<CSTCPACTLFLW>-ORIGINAPPLICATION = 1.
<CSTCPACTLFLW>-ORIGINDOCUMENT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSTCPACTLFLW-ORIGINTRANSACTION, sy-vline,
  WA_CSTCPACTLFLW-ORIGINTRANSACTIONQUALIFIER, sy-vline,
  WA_CSTCPACTLFLW-CASHFLOW, sy-vline,
  WA_CSTCPACTLFLW-TRANSACTIONDATE, sy-vline,
  WA_CSTCPACTLFLW-BANKACCOUNTINTERNALID, sy-vline,
  WA_CSTCPACTLFLW-COMPANYCODE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSTCPACTLFLW 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_CSTCPACTLFLW 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_CSTCPACTLFLW INTO WA_CSTCPACTLFLW.


*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 ORIGINSYSTEM
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSTCPACTLFLW-ORIGINSYSTEM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSTCPACTLFLW-ORIGINSYSTEM.
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_CSTCPACTLFLW_STR, 
MANDT TYPE STRING,
CASHPOSITIONPROFILE TYPE STRING,
ORIGINSYSTEM TYPE STRING,
ORIGINAPPLICATION TYPE STRING,
ORIGINDOCUMENT TYPE STRING,
ORIGINTRANSACTION TYPE STRING,
ORIGINTRANSACTIONQUALIFIER TYPE STRING,
CASHFLOW TYPE STRING,
TRANSACTIONDATE TYPE STRING,
BANKACCOUNTINTERNALID TYPE STRING,
COMPANYCODE TYPE STRING,
AMOUNTINBANKACCOUNTCURRENCY TYPE STRING,
BANKACCOUNTCURRENCY TYPE STRING,
AMOUNTINDISPLAYCURRENCY TYPE STRING,
CASHPOSITIONDISPLAYCURRENCY TYPE STRING,
CSHPOSSCALEDAMOUNTINTRANSCRCY TYPE STRING,
AMOUNTINTRANSACTIONCURRENCY TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSTCPACTLFLW_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_CSTCPACTLFLW_STR-MANDT sy-vline 
WA_CSTCPACTLFLW_STR-CASHPOSITIONPROFILE sy-vline 
WA_CSTCPACTLFLW_STR-ORIGINSYSTEM sy-vline 
WA_CSTCPACTLFLW_STR-ORIGINAPPLICATION sy-vline 
WA_CSTCPACTLFLW_STR-ORIGINDOCUMENT sy-vline 
WA_CSTCPACTLFLW_STR-ORIGINTRANSACTION sy-vline 
WA_CSTCPACTLFLW_STR-ORIGINTRANSACTIONQUALIFIER sy-vline 
WA_CSTCPACTLFLW_STR-CASHFLOW sy-vline 
WA_CSTCPACTLFLW_STR-TRANSACTIONDATE sy-vline 
WA_CSTCPACTLFLW_STR-BANKACCOUNTINTERNALID sy-vline 
WA_CSTCPACTLFLW_STR-COMPANYCODE sy-vline 
WA_CSTCPACTLFLW_STR-AMOUNTINBANKACCOUNTCURRENCY sy-vline 
WA_CSTCPACTLFLW_STR-BANKACCOUNTCURRENCY sy-vline 
WA_CSTCPACTLFLW_STR-AMOUNTINDISPLAYCURRENCY sy-vline 
WA_CSTCPACTLFLW_STR-CASHPOSITIONDISPLAYCURRENCY sy-vline 
WA_CSTCPACTLFLW_STR-CSHPOSSCALEDAMOUNTINTRANSCRCY sy-vline 
WA_CSTCPACTLFLW_STR-AMOUNTINTRANSACTIONCURRENCY sy-vline 
WA_CSTCPACTLFLW_STR-TRANSACTIONCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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