ABAP Select data from SAP table PFLOG into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM PFLOG
*  INTO TABLE @DATA(IT_PFLOG2).
*--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_PFLOG INDEX 1 INTO DATA(WA_PFLOG2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<PFLOG>-MANDT = 1.
<PFLOG>-LOGSYS = 1.
<PFLOG>-TIMESTMP = 1.
<PFLOG>-SELART = 1.
<PFLOG>-FUNCTION = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_PFLOG-ACTIVITY, sy-vline,
  WA_PFLOG-REPID, sy-vline,
  WA_PFLOG-VARIANT, sy-vline,
  WA_PFLOG-TCODE, sy-vline,
  WA_PFLOG-USERNAME, sy-vline,
  WA_PFLOG-TEST, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_PFLOG 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_PFLOG 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_PFLOG INTO WA_PFLOG.


*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 LOGSYS
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_PFLOG-LOGSYS
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_PFLOG-LOGSYS.
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_PFLOG_STR, 
MANDT TYPE STRING,
LOGSYS TYPE STRING,
TIMESTMP TYPE STRING,
SELART TYPE STRING,
FUNCTION TYPE STRING,
ACTIVITY TYPE STRING,
REPID TYPE STRING,
VARIANT TYPE STRING,
TCODE TYPE STRING,
USERNAME TYPE STRING,
TEST TYPE STRING,
BTCFLG TYPE STRING,
SWPFLG TYPE STRING,
SELFLG TYPE STRING,
PARFLG TYPE STRING,END OF T_EKKO_STR.
DATA: WA_PFLOG_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_PFLOG_STR-MANDT sy-vline 
WA_PFLOG_STR-LOGSYS sy-vline 
WA_PFLOG_STR-TIMESTMP sy-vline 
WA_PFLOG_STR-SELART sy-vline 
WA_PFLOG_STR-FUNCTION sy-vline 
WA_PFLOG_STR-ACTIVITY sy-vline 
WA_PFLOG_STR-REPID sy-vline 
WA_PFLOG_STR-VARIANT sy-vline 
WA_PFLOG_STR-TCODE sy-vline 
WA_PFLOG_STR-USERNAME sy-vline 
WA_PFLOG_STR-TEST sy-vline 
WA_PFLOG_STR-BTCFLG sy-vline 
WA_PFLOG_STR-SWPFLG sy-vline 
WA_PFLOG_STR-SELFLG sy-vline 
WA_PFLOG_STR-PARFLG sy-vline      INTO ld_text SEPARATED BY SPACE.

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