ABAP Select data from SAP table T5F4W into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP T5F4W 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 T5F4W. 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 T5F4W 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_T5F4W TYPE STANDARD TABLE OF T5F4W,
      WA_T5F4W TYPE T5F4W,
      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: <T5F4W> TYPE T5F4W.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_T5F4W.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM T5F4W
  INTO TABLE IT_T5F4W.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM T5F4W
*  INTO TABLE @DATA(IT_T5F4W2).
*--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_T5F4W INDEX 1 INTO DATA(WA_T5F4W2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_T5F4W ASSIGNING <T5F4W>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<T5F4W>-MANDT = 1.
<T5F4W>-CORGA = 1.
<T5F4W>-PERTY = 1.
<T5F4W>-SEQNO = 1.
<T5F4W>-ENDDA = 1.

ENDLOOP.

LOOP AT IT_T5F4W INTO WA_T5F4W.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_T5F4W-BEGDA, sy-vline,
  WA_T5F4W-ORGAN, sy-vline,
  WA_T5F4W-COTIS, sy-vline,
  WA_T5F4W-TRANX, sy-vline,
  WA_T5F4W-XCOTEE, sy-vline,
  WA_T5F4W-XCOTER, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_T5F4W 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_T5F4W 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_T5F4W INTO WA_T5F4W.


*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_T5F4W_STR, 
MANDT TYPE STRING,
CORGA TYPE STRING,
PERTY TYPE STRING,
SEQNO TYPE STRING,
ENDDA TYPE STRING,
BEGDA TYPE STRING,
ORGAN TYPE STRING,
COTIS TYPE STRING,
TRANX TYPE STRING,
XCOTEE TYPE STRING,
XCOTER TYPE STRING,
REGNO TYPE STRING,
GRCBI TYPE STRING,END OF T_EKKO_STR.
DATA: WA_T5F4W_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_T5F4W_STR-MANDT sy-vline 
WA_T5F4W_STR-CORGA sy-vline 
WA_T5F4W_STR-PERTY sy-vline 
WA_T5F4W_STR-SEQNO sy-vline 
WA_T5F4W_STR-ENDDA sy-vline 
WA_T5F4W_STR-BEGDA sy-vline 
WA_T5F4W_STR-ORGAN sy-vline 
WA_T5F4W_STR-COTIS sy-vline 
WA_T5F4W_STR-TRANX sy-vline 
WA_T5F4W_STR-XCOTEE sy-vline 
WA_T5F4W_STR-XCOTER sy-vline 
WA_T5F4W_STR-REGNO sy-vline 
WA_T5F4W_STR-GRCBI sy-vline      INTO ld_text SEPARATED BY SPACE.

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