ABAP Select data from SAP table V_T5M8W into internal table

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Below is a number of ABAP code snippets to demonstrate how to select data from SAP V_T5M8W 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 V_T5M8W. 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 V_T5M8W 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_V_T5M8W TYPE STANDARD TABLE OF V_T5M8W,
      WA_V_T5M8W TYPE V_T5M8W,
      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: <V_T5M8W> TYPE V_T5M8W.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_V_T5M8W.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM V_T5M8W
  INTO TABLE IT_V_T5M8W.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM V_T5M8W
*  INTO TABLE @DATA(IT_V_T5M8W2).
*--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_V_T5M8W INDEX 1 INTO DATA(WA_V_T5M8W2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_V_T5M8W ASSIGNING <V_T5M8W>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<V_T5M8W>-MANDT = 1.
<V_T5M8W>-CORYR = 1.
<V_T5M8W>-PERNR = 1.
<V_T5M8W>-FIRMA = 1.
<V_T5M8W>-SEKEY = 1.

ENDLOOP.

LOOP AT IT_V_T5M8W INTO WA_V_T5M8W.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_V_T5M8W-LGART, sy-vline,
  WA_V_T5M8W-FITXT, sy-vline,
  WA_V_T5M8W-SETXT, sy-vline,
  WA_V_T5M8W-LGTXT, sy-vline,
  WA_V_T5M8W-AMOUNT, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_V_T5M8W 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_V_T5M8W 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_V_T5M8W INTO WA_V_T5M8W.


*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 GJAHR, internal->external for field CORYR
CALL FUNCTION 'CONVERSION_EXIT_GJAHR_OUTPUT'
  EXPORTING
    input =                      WA_V_T5M8W-CORYR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_V_T5M8W-CORYR.
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_V_T5M8W_STR, 
MANDT TYPE STRING,
CORYR TYPE STRING,
PERNR TYPE STRING,
FIRMA TYPE STRING,
SEKEY TYPE STRING,
LGART TYPE STRING,
FITXT TYPE STRING,
SETXT TYPE STRING,
LGTXT TYPE STRING,
AMOUNT TYPE STRING,END OF T_EKKO_STR.
DATA: WA_V_T5M8W_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_V_T5M8W_STR-MANDT sy-vline 
WA_V_T5M8W_STR-CORYR sy-vline 
WA_V_T5M8W_STR-PERNR sy-vline 
WA_V_T5M8W_STR-FIRMA sy-vline 
WA_V_T5M8W_STR-SEKEY sy-vline 
WA_V_T5M8W_STR-LGART sy-vline 
WA_V_T5M8W_STR-FITXT sy-vline 
WA_V_T5M8W_STR-SETXT sy-vline 
WA_V_T5M8W_STR-LGTXT sy-vline 
WA_V_T5M8W_STR-AMOUNT sy-vline      INTO ld_text SEPARATED BY SPACE.

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