ABAP Select data from SAP table CSNAPCOMPARE into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM CSNAPCOMPARE
*  INTO TABLE @DATA(IT_CSNAPCOMPARE2).
*--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_CSNAPCOMPARE INDEX 1 INTO DATA(WA_CSNAPCOMPARE2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<CSNAPCOMPARE>-MANDT = 1.
<CSNAPCOMPARE>-CASHFLOW = 1.
<CSNAPCOMPARE>-BANK = 1.
<CSNAPCOMPARE>-BANKACCOUNTCURRENCY = 1.
<CSNAPCOMPARE>-COMPANYCODE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_CSNAPCOMPARE-BANKACCOUNT, sy-vline,
  WA_CSNAPCOMPARE-BANKACCOUNTDESCRIPTION, sy-vline,
  WA_CSNAPCOMPARE-BANKACCOUNTTYPE, sy-vline,
  WA_CSNAPCOMPARE-BANKCOUNTRY, sy-vline,
  WA_CSNAPCOMPARE-BUSINESSPARTNER, sy-vline,
  WA_CSNAPCOMPARE-BANKGROUPNAME, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_CSNAPCOMPARE 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_CSNAPCOMPARE 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_CSNAPCOMPARE INTO WA_CSNAPCOMPARE.


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

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

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

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

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

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

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

*Conversion exit ALPHA, internal->external for field TRADINGPARTNER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_CSNAPCOMPARE-TRADINGPARTNER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_CSNAPCOMPARE-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_CSNAPCOMPARE_STR, 
MANDT TYPE STRING,
CASHFLOW TYPE STRING,
BANK TYPE STRING,
BANKACCOUNTCURRENCY TYPE STRING,
COMPANYCODE TYPE STRING,
BANKACCOUNT TYPE STRING,
BANKACCOUNTDESCRIPTION TYPE STRING,
BANKACCOUNTTYPE TYPE STRING,
BANKCOUNTRY TYPE STRING,
BUSINESSPARTNER TYPE STRING,
BANKGROUPNAME TYPE STRING,
BUSINESSAREA TYPE STRING,
BUSINESSAREANAME TYPE STRING,
CERTAINTYLEVEL TYPE STRING,
COMPANYCODENAME TYPE STRING,
TRANSACTIONCURRENCY TYPE STRING,
GLACCOUNT TYPE STRING,
HOUSEBANK TYPE STRING,
HOUSEBANKACCOUNT TYPE STRING,
LIQUIDITYITEM TYPE STRING,
CASHFLOWDIRECTION TYPE STRING,
LIQUIDITYITEMNAME TYPE STRING,
CASHPLANNINGGROUP TYPE STRING,
CASHPLANNINGGROUPNAME TYPE STRING,
PLANNINGLEVEL TYPE STRING,
PLANNINGLEVELNAME TYPE STRING,
PROFITCENTER TYPE STRING,
SEGMENT TYPE STRING,
TRADINGPARTNER TYPE STRING,
CASHFLOWSNAPSHOTDATE TYPE STRING,
CALENDARDAY TYPE STRING,
WEEKDAY TYPE STRING,
VALUEDATE TYPE STRING,
DISPLAYCURRENCY TYPE STRING,
AMOUNTINBANKACCOUNTCURRENCY TYPE STRING,
AMOUNTINDISPLAYCURRENCY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_CSNAPCOMPARE_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_CSNAPCOMPARE_STR-MANDT sy-vline 
WA_CSNAPCOMPARE_STR-CASHFLOW sy-vline 
WA_CSNAPCOMPARE_STR-BANK sy-vline 
WA_CSNAPCOMPARE_STR-BANKACCOUNTCURRENCY sy-vline 
WA_CSNAPCOMPARE_STR-COMPANYCODE sy-vline 
WA_CSNAPCOMPARE_STR-BANKACCOUNT sy-vline 
WA_CSNAPCOMPARE_STR-BANKACCOUNTDESCRIPTION sy-vline 
WA_CSNAPCOMPARE_STR-BANKACCOUNTTYPE sy-vline 
WA_CSNAPCOMPARE_STR-BANKCOUNTRY sy-vline 
WA_CSNAPCOMPARE_STR-BUSINESSPARTNER sy-vline 
WA_CSNAPCOMPARE_STR-BANKGROUPNAME sy-vline 
WA_CSNAPCOMPARE_STR-BUSINESSAREA sy-vline 
WA_CSNAPCOMPARE_STR-BUSINESSAREANAME sy-vline 
WA_CSNAPCOMPARE_STR-CERTAINTYLEVEL sy-vline 
WA_CSNAPCOMPARE_STR-COMPANYCODENAME sy-vline 
WA_CSNAPCOMPARE_STR-TRANSACTIONCURRENCY sy-vline 
WA_CSNAPCOMPARE_STR-GLACCOUNT sy-vline 
WA_CSNAPCOMPARE_STR-HOUSEBANK sy-vline 
WA_CSNAPCOMPARE_STR-HOUSEBANKACCOUNT sy-vline 
WA_CSNAPCOMPARE_STR-LIQUIDITYITEM sy-vline 
WA_CSNAPCOMPARE_STR-CASHFLOWDIRECTION sy-vline 
WA_CSNAPCOMPARE_STR-LIQUIDITYITEMNAME sy-vline 
WA_CSNAPCOMPARE_STR-CASHPLANNINGGROUP sy-vline 
WA_CSNAPCOMPARE_STR-CASHPLANNINGGROUPNAME sy-vline 
WA_CSNAPCOMPARE_STR-PLANNINGLEVEL sy-vline 
WA_CSNAPCOMPARE_STR-PLANNINGLEVELNAME sy-vline 
WA_CSNAPCOMPARE_STR-PROFITCENTER sy-vline 
WA_CSNAPCOMPARE_STR-SEGMENT sy-vline 
WA_CSNAPCOMPARE_STR-TRADINGPARTNER sy-vline 
WA_CSNAPCOMPARE_STR-CASHFLOWSNAPSHOTDATE sy-vline 
WA_CSNAPCOMPARE_STR-CALENDARDAY sy-vline 
WA_CSNAPCOMPARE_STR-WEEKDAY sy-vline 
WA_CSNAPCOMPARE_STR-VALUEDATE sy-vline 
WA_CSNAPCOMPARE_STR-DISPLAYCURRENCY sy-vline 
WA_CSNAPCOMPARE_STR-AMOUNTINBANKACCOUNTCURRENCY sy-vline 
WA_CSNAPCOMPARE_STR-AMOUNTINDISPLAYCURRENCY sy-vline      INTO ld_text SEPARATED BY SPACE.

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