ABAP Select data from SAP table TFISEVENTLOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM TFISEVENTLOG
*  INTO TABLE @DATA(IT_TFISEVENTLOG2).
*--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_TFISEVENTLOG INDEX 1 INTO DATA(WA_TFISEVENTLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<TFISEVENTLOG>-MANDT = 1.
<TFISEVENTLOG>-EVENTNR = 1.
<TFISEVENTLOG>-CATEGORYNAME = 1.
<TFISEVENTLOG>-ID = 1.
<TFISEVENTLOG>-BP_ID = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_TFISEVENTLOG-BP_TYPE, sy-vline,
  WA_TFISEVENTLOG-ADATE, sy-vline,
  WA_TFISEVENTLOG-ATIME, sy-vline,
  WA_TFISEVENTLOG-BUKRS, sy-vline,
  WA_TFISEVENTLOG-OBJKEY, sy-vline,
  WA_TFISEVENTLOG-OBJTYPE, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_TFISEVENTLOG 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_TFISEVENTLOG 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_TFISEVENTLOG INTO WA_TFISEVENTLOG.


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

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

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

*Conversion exit ALPHA, internal->external for field REFERENCE
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_TFISEVENTLOG-REFERENCE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_TFISEVENTLOG-REFERENCE.
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_TFISEVENTLOG_STR, 
MANDT TYPE STRING,
EVENTNR TYPE STRING,
CATEGORYNAME TYPE STRING,
ID TYPE STRING,
BP_ID TYPE STRING,
BP_TYPE TYPE STRING,
ADATE TYPE STRING,
ATIME TYPE STRING,
BUKRS TYPE STRING,
OBJKEY TYPE STRING,
OBJTYPE TYPE STRING,
LOGSYS TYPE STRING,
MSGID TYPE STRING,
MSGTY TYPE STRING,
MSGNO TYPE STRING,
MSGV1 TYPE STRING,
MSGV2 TYPE STRING,
MSGV3 TYPE STRING,
MSGV4 TYPE STRING,
REFERENCE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_TFISEVENTLOG_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_TFISEVENTLOG_STR-MANDT sy-vline 
WA_TFISEVENTLOG_STR-EVENTNR sy-vline 
WA_TFISEVENTLOG_STR-CATEGORYNAME sy-vline 
WA_TFISEVENTLOG_STR-ID sy-vline 
WA_TFISEVENTLOG_STR-BP_ID sy-vline 
WA_TFISEVENTLOG_STR-BP_TYPE sy-vline 
WA_TFISEVENTLOG_STR-ADATE sy-vline 
WA_TFISEVENTLOG_STR-ATIME sy-vline 
WA_TFISEVENTLOG_STR-BUKRS sy-vline 
WA_TFISEVENTLOG_STR-OBJKEY sy-vline 
WA_TFISEVENTLOG_STR-OBJTYPE sy-vline 
WA_TFISEVENTLOG_STR-LOGSYS sy-vline 
WA_TFISEVENTLOG_STR-MSGID sy-vline 
WA_TFISEVENTLOG_STR-MSGTY sy-vline 
WA_TFISEVENTLOG_STR-MSGNO sy-vline 
WA_TFISEVENTLOG_STR-MSGV1 sy-vline 
WA_TFISEVENTLOG_STR-MSGV2 sy-vline 
WA_TFISEVENTLOG_STR-MSGV3 sy-vline 
WA_TFISEVENTLOG_STR-MSGV4 sy-vline 
WA_TFISEVENTLOG_STR-REFERENCE sy-vline      INTO ld_text SEPARATED BY SPACE.

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