ABAP Select data from SAP table /BSNAGT/CVMSGUI into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /BSNAGT/CVMSGUI
*  INTO TABLE @DATA(IT_/BSNAGT/CVMSGUI2).
*--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_/BSNAGT/CVMSGUI INDEX 1 INTO DATA(WA_/BSNAGT/CVMSGUI2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
</BSNAGT/CVMSGUI>-MANDT = 1.
</BSNAGT/CVMSGUI>-GUID = 1.
</BSNAGT/CVMSGUI>-DNAME = 1.
</BSNAGT/CVMSGUI>-MESSAGETYPE = 1.
</BSNAGT/CVMSGUI>-FILENAME = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/BSNAGT/CVMSGUI-SENDERID, sy-vline,
  WA_/BSNAGT/CVMSGUI-RECEIVERID, sy-vline,
  WA_/BSNAGT/CVMSGUI-MESSAGEID, sy-vline,
  WA_/BSNAGT/CVMSGUI-FILEDIRECTION, sy-vline,
  WA_/BSNAGT/CVMSGUI-DIRECTIONDESC, sy-vline,
  WA_/BSNAGT/CVMSGUI-REFERENCE_ID, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/BSNAGT/CVMSGUI 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_/BSNAGT/CVMSGUI 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_/BSNAGT/CVMSGUI INTO WA_/BSNAGT/CVMSGUI.


*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.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_/BSNAGT/CVMSGUI_STR, 
MANDT TYPE STRING,
GUID TYPE STRING,
DNAME TYPE STRING,
MESSAGETYPE TYPE STRING,
FILENAME TYPE STRING,
SENDERID TYPE STRING,
RECEIVERID TYPE STRING,
MESSAGEID TYPE STRING,
FILEDIRECTION TYPE STRING,
DIRECTIONDESC TYPE STRING,
REFERENCE_ID TYPE STRING,
CRUSR TYPE STRING,
CREATEUSERNAME TYPE STRING,
CRDAT TYPE STRING,
CRTIME TYPE STRING,
CHUSR TYPE STRING,
CHANGEUSERNAME TYPE STRING,
CHDAT TYPE STRING,
CHTIME TYPE STRING,
ARC_STATUS TYPE STRING,
MESSAGECONTENT TYPE STRING,
RELATBUSOBJ TYPE STRING,
PARENT_GUID TYPE STRING,
REASONCODE TYPE STRING,
EXTNUMBER TYPE STRING,
REL_MESSAGEID TYPE STRING,
EXT_HEADER TYPE STRING,
TRANS_CATE TYPE STRING,
NUM_OF_RECORDS TYPE STRING,
CONTENT_CAT TYPE STRING,
BULK_GUID TYPE STRING,
UETR TYPE STRING,
STATUS TYPE STRING,
STATUS_TEXT TYPE STRING,
SEC_APPLIED TYPE STRING,
SEC_APPLIED_DATE TYPE STRING,
SEC_APPLIED_TIME TYPE STRING,
SEC_APPLIED_USER TYPE STRING,
ORIG_APP_TYPE TYPE STRING,
ORIG_NAV_REF TYPE STRING,
CODEPAGE TYPE STRING,
CODEPAGEDESC TYPE STRING,
DIRECTION_ICON TYPE STRING,
TRANS_STATUS TYPE STRING,
DOMVALUE TYPE STRING,
ARC_STATUS_TEXT TYPE STRING,
ROWCOLOR TYPE STRING,
COMPRESS_CAT TYPE STRING,
COMP_APPLIED TYPE STRING,
SENSITIVE TYPE STRING,
EXPIRATION_DATE TYPE STRING,
PAYMENT_RUN_ID TYPE STRING,
PAYMENT_RUN_DATE TYPE STRING,
PAYMENT_RUN_COMPANY_CODE TYPE STRING,
REFERENCE_NUMBER TYPE STRING,
BATCH_NO TYPE STRING,
DUPLICATE TYPE STRING,
ROUTING_CAT TYPE STRING,
ROUTE_NAME TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/BSNAGT/CVMSGUI_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_/BSNAGT/CVMSGUI_STR-MANDT sy-vline 
WA_/BSNAGT/CVMSGUI_STR-GUID sy-vline 
WA_/BSNAGT/CVMSGUI_STR-DNAME sy-vline 
WA_/BSNAGT/CVMSGUI_STR-MESSAGETYPE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-FILENAME sy-vline 
WA_/BSNAGT/CVMSGUI_STR-SENDERID sy-vline 
WA_/BSNAGT/CVMSGUI_STR-RECEIVERID sy-vline 
WA_/BSNAGT/CVMSGUI_STR-MESSAGEID sy-vline 
WA_/BSNAGT/CVMSGUI_STR-FILEDIRECTION sy-vline 
WA_/BSNAGT/CVMSGUI_STR-DIRECTIONDESC sy-vline 
WA_/BSNAGT/CVMSGUI_STR-REFERENCE_ID sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CRUSR sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CREATEUSERNAME sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CRDAT sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CRTIME sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CHUSR sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CHANGEUSERNAME sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CHDAT sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CHTIME sy-vline 
WA_/BSNAGT/CVMSGUI_STR-ARC_STATUS sy-vline 
WA_/BSNAGT/CVMSGUI_STR-MESSAGECONTENT sy-vline 
WA_/BSNAGT/CVMSGUI_STR-RELATBUSOBJ sy-vline 
WA_/BSNAGT/CVMSGUI_STR-PARENT_GUID sy-vline 
WA_/BSNAGT/CVMSGUI_STR-REASONCODE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-EXTNUMBER sy-vline 
WA_/BSNAGT/CVMSGUI_STR-REL_MESSAGEID sy-vline 
WA_/BSNAGT/CVMSGUI_STR-EXT_HEADER sy-vline 
WA_/BSNAGT/CVMSGUI_STR-TRANS_CATE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-NUM_OF_RECORDS sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CONTENT_CAT sy-vline 
WA_/BSNAGT/CVMSGUI_STR-BULK_GUID sy-vline 
WA_/BSNAGT/CVMSGUI_STR-UETR sy-vline 
WA_/BSNAGT/CVMSGUI_STR-STATUS sy-vline 
WA_/BSNAGT/CVMSGUI_STR-STATUS_TEXT sy-vline 
WA_/BSNAGT/CVMSGUI_STR-SEC_APPLIED sy-vline 
WA_/BSNAGT/CVMSGUI_STR-SEC_APPLIED_DATE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-SEC_APPLIED_TIME sy-vline 
WA_/BSNAGT/CVMSGUI_STR-SEC_APPLIED_USER sy-vline 
WA_/BSNAGT/CVMSGUI_STR-ORIG_APP_TYPE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-ORIG_NAV_REF sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CODEPAGE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-CODEPAGEDESC sy-vline 
WA_/BSNAGT/CVMSGUI_STR-DIRECTION_ICON sy-vline 
WA_/BSNAGT/CVMSGUI_STR-TRANS_STATUS sy-vline 
WA_/BSNAGT/CVMSGUI_STR-DOMVALUE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-ARC_STATUS_TEXT sy-vline 
WA_/BSNAGT/CVMSGUI_STR-ROWCOLOR sy-vline 
WA_/BSNAGT/CVMSGUI_STR-COMPRESS_CAT sy-vline 
WA_/BSNAGT/CVMSGUI_STR-COMP_APPLIED sy-vline 
WA_/BSNAGT/CVMSGUI_STR-SENSITIVE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-EXPIRATION_DATE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-PAYMENT_RUN_ID sy-vline 
WA_/BSNAGT/CVMSGUI_STR-PAYMENT_RUN_DATE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-PAYMENT_RUN_COMPANY_CODE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-REFERENCE_NUMBER sy-vline 
WA_/BSNAGT/CVMSGUI_STR-BATCH_NO sy-vline 
WA_/BSNAGT/CVMSGUI_STR-DUPLICATE sy-vline 
WA_/BSNAGT/CVMSGUI_STR-ROUTING_CAT sy-vline 
WA_/BSNAGT/CVMSGUI_STR-ROUTE_NAME sy-vline      INTO ld_text SEPARATED BY SPACE.

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