ABAP Select data from SAP table /PF1/STR_FH_DB_ITEM_BUFFER into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP /PF1/STR_FH_DB_ITEM_BUFFER 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 /PF1/STR_FH_DB_ITEM_BUFFER. 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 /PF1/STR_FH_DB_ITEM_BUFFER 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_/PF1/STR_FH_DB_ITEM_BUFFER TYPE STANDARD TABLE OF /PF1/STR_FH_DB_ITEM_BUFFER,
      WA_/PF1/STR_FH_DB_ITEM_BUFFER TYPE /PF1/STR_FH_DB_ITEM_BUFFER,
      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: </PF1/STR_FH_DB_ITEM_BUFFER> TYPE /PF1/STR_FH_DB_ITEM_BUFFER.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_/PF1/STR_FH_DB_ITEM_BUFFER.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM /PF1/STR_FH_DB_ITEM_BUFFER
  INTO TABLE IT_/PF1/STR_FH_DB_ITEM_BUFFER.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM /PF1/STR_FH_DB_ITEM_BUFFER
*  INTO TABLE @DATA(IT_/PF1/STR_FH_DB_ITEM_BUFFER2).
*--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_/PF1/STR_FH_DB_ITEM_BUFFER INDEX 1 INTO DATA(WA_/PF1/STR_FH_DB_ITEM_BUFFER2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_/PF1/STR_FH_DB_ITEM_BUFFER ASSIGNING </PF1/STR_FH_DB_ITEM_BUFFER>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
</PF1/STR_FH_DB_ITEM_BUFFER>-CLIENT = 1.
</PF1/STR_FH_DB_ITEM_BUFFER>-CLEARING_AREA = 1.
</PF1/STR_FH_DB_ITEM_BUFFER>-PI_DATE = 1.
</PF1/STR_FH_DB_ITEM_BUFFER>-PI_NO = 1.
</PF1/STR_FH_DB_ITEM_BUFFER>-RUNNING_NO = 1.

ENDLOOP.

LOOP AT IT_/PF1/STR_FH_DB_ITEM_BUFFER INTO WA_/PF1/STR_FH_DB_ITEM_BUFFER.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_/PF1/STR_FH_DB_ITEM_BUFFER-SEGMENTATION_KEY, sy-vline,
  WA_/PF1/STR_FH_DB_ITEM_BUFFER-TIME_PART, sy-vline,
  WA_/PF1/STR_FH_DB_ITEM_BUFFER-GUID, sy-vline,
  WA_/PF1/STR_FH_DB_ITEM_BUFFER-STRUCTURE, sy-vline,
  WA_/PF1/STR_FH_DB_ITEM_BUFFER-DATA, sy-vline,
  WA_/PF1/STR_FH_DB_ITEM_BUFFER-TYPE_SEQ_NO, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_/PF1/STR_FH_DB_ITEM_BUFFER 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_/PF1/STR_FH_DB_ITEM_BUFFER 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_/PF1/STR_FH_DB_ITEM_BUFFER INTO WA_/PF1/STR_FH_DB_ITEM_BUFFER.


*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_/PF1/STR_FH_DB_ITEM_BUFFER_STR, 
CLIENT TYPE STRING,
CLEARING_AREA TYPE STRING,
PI_DATE TYPE STRING,
PI_NO TYPE STRING,
RUNNING_NO TYPE STRING,
SEGMENTATION_KEY TYPE STRING,
TIME_PART TYPE STRING,
GUID TYPE STRING,
STRUCTURE TYPE STRING,
DATA TYPE STRING,
TYPE_SEQ_NO TYPE STRING,
TYPE_IDENTIFIER TYPE STRING,
CRUSR TYPE STRING,
CRDAT TYPE STRING,
CRTIM TYPE STRING,
CHUSR TYPE STRING,
CHDAT TYPE STRING,
CHTIM TYPE STRING,
RLUSR TYPE STRING,
RLDAT TYPE STRING,
RLTIM TYPE STRING,
LOCKLEVEL TYPE STRING,
STATE TYPE STRING,END OF T_EKKO_STR.
DATA: WA_/PF1/STR_FH_DB_ITEM_BUFFER_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_/PF1/STR_FH_DB_ITEM_BUFFER_STR-CLIENT sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-CLEARING_AREA sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-PI_DATE sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-PI_NO sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-RUNNING_NO sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-SEGMENTATION_KEY sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-TIME_PART sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-GUID sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-STRUCTURE sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-DATA sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-TYPE_SEQ_NO sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-TYPE_IDENTIFIER sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-CRUSR sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-CRDAT sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-CRTIM sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-CHUSR sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-CHDAT sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-CHTIM sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-RLUSR sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-RLDAT sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-RLTIM sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-LOCKLEVEL sy-vline 
WA_/PF1/STR_FH_DB_ITEM_BUFFER_STR-STATE sy-vline      INTO ld_text SEPARATED BY SPACE.

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