ABAP Select data from SAP table DFPS_ACTION_LOG_EXTENSION into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM DFPS_ACTION_LOG_EXTENSION
*  INTO TABLE @DATA(IT_DFPS_ACTION_LOG_EXTENSION2).
*--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_DFPS_ACTION_LOG_EXTENSION INDEX 1 INTO DATA(WA_DFPS_ACTION_LOG_EXTENSION2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<DFPS_ACTION_LOG_EXTENSION>-MANDT = 1.
<DFPS_ACTION_LOG_EXTENSION>-OBJNR = 1.
<DFPS_ACTION_LOG_EXTENSION>-STAT = 1.
<DFPS_ACTION_LOG_EXTENSION>-CHGNR = 1.
<DFPS_ACTION_LOG_EXTENSION>-USNAM = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_DFPS_ACTION_LOG_EXTENSION-UDATE, sy-vline,
  WA_DFPS_ACTION_LOG_EXTENSION-UTIME, sy-vline,
  WA_DFPS_ACTION_LOG_EXTENSION-TCODE, sy-vline,
  WA_DFPS_ACTION_LOG_EXTENSION-CDTCODE, sy-vline,
  WA_DFPS_ACTION_LOG_EXTENSION-INACT, sy-vline,
  WA_DFPS_ACTION_LOG_EXTENSION-CHIND, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_DFPS_ACTION_LOG_EXTENSION 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_DFPS_ACTION_LOG_EXTENSION 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_DFPS_ACTION_LOG_EXTENSION INTO WA_DFPS_ACTION_LOG_EXTENSION.


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

*Conversion exit ISOLA, internal->external for field SPRACHE
CALL FUNCTION 'CONVERSION_EXIT_ISOLA_OUTPUT'
  EXPORTING
    input =                      WA_DFPS_ACTION_LOG_EXTENSION-SPRACHE
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_DFPS_ACTION_LOG_EXTENSION-SPRACHE.
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_DFPS_ACTION_LOG_EXTENSION_STR, 
MANDT TYPE STRING,
OBJNR TYPE STRING,
STAT TYPE STRING,
CHGNR TYPE STRING,
USNAM TYPE STRING,
UDATE TYPE STRING,
UTIME TYPE STRING,
TCODE TYPE STRING,
CDTCODE TYPE STRING,
INACT TYPE STRING,
CHIND TYPE STRING,
_DATAAGING TYPE STRING,
OBJECTID TYPE STRING,
CHANGENR TYPE STRING,
USERNAME TYPE STRING,
TABNAME TYPE STRING,
TABKEY TYPE STRING,
KEYLEN TYPE STRING,
CHNGIND TYPE STRING,
FNAME TYPE STRING,
FTEXT TYPE STRING,
SPRACHE TYPE STRING,
TEXT_CASE TYPE STRING,
F_OLD TYPE STRING,
F_NEW TYPE STRING,
TXT04 TYPE STRING,
TXT30 TYPE STRING,
FENUM TYPE STRING,
AKNUM TYPE STRING,
URNUM TYPE STRING,
MANUM TYPE STRING,
FLAG TYPE STRING,
IDENTIFIER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_DFPS_ACTION_LOG_EXTENSION_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_DFPS_ACTION_LOG_EXTENSION_STR-MANDT sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-OBJNR sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-STAT sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-CHGNR sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-USNAM sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-UDATE sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-UTIME sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-TCODE sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-CDTCODE sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-INACT sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-CHIND sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-_DATAAGING sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-OBJECTID sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-CHANGENR sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-USERNAME sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-TABNAME sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-TABKEY sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-KEYLEN sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-CHNGIND sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-FNAME sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-FTEXT sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-SPRACHE sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-TEXT_CASE sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-F_OLD sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-F_NEW sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-TXT04 sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-TXT30 sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-FENUM sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-AKNUM sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-URNUM sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-MANUM sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-FLAG sy-vline 
WA_DFPS_ACTION_LOG_EXTENSION_STR-IDENTIFIER sy-vline      INTO ld_text SEPARATED BY SPACE.

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