ABAP Select data from SAP table WYT5H into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP WYT5H 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 WYT5H. 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 WYT5H 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_WYT5H TYPE STANDARD TABLE OF WYT5H,
      WA_WYT5H TYPE WYT5H,
      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: <WYT5H> TYPE WYT5H.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_WYT5H.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM WYT5H
  INTO TABLE IT_WYT5H.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WYT5H
*  INTO TABLE @DATA(IT_WYT5H2).
*--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_WYT5H INDEX 1 INTO DATA(WA_WYT5H2).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_WYT5H ASSIGNING <WYT5H>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WYT5H>-LIFNR = 1.
<WYT5H>-EKORG = 1.
<WYT5H>-LTSNR = 1.
<WYT5H>-WERKS = 1.
<WYT5H>-FELDN = 1.

ENDLOOP.

LOOP AT IT_WYT5H INTO WA_WYT5H.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WYT5H-FEINH, sy-vline,
  WA_WYT5H-DATUM, sy-vline,
  WA_WYT5H-UZEIT, sy-vline,
  WA_WYT5H-USNAM, sy-vline,
  WA_WYT5H-FEINA, sy-vline,
ENDLOOP.
   
*Add any further fields from structure WA_WYT5H 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_WYT5H 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_WYT5H INTO WA_WYT5H.


*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 LIFNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WYT5H-LIFNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WYT5H-LIFNR.
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_WYT5H_STR, 
LIFNR TYPE STRING,
EKORG TYPE STRING,
LTSNR TYPE STRING,
WERKS TYPE STRING,
FELDN TYPE STRING,
FEINH TYPE STRING,
DATUM TYPE STRING,
UZEIT TYPE STRING,
USNAM TYPE STRING,
FEINA TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WYT5H_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_WYT5H_STR-LIFNR sy-vline 
WA_WYT5H_STR-EKORG sy-vline 
WA_WYT5H_STR-LTSNR sy-vline 
WA_WYT5H_STR-WERKS sy-vline 
WA_WYT5H_STR-FELDN sy-vline 
WA_WYT5H_STR-FEINH sy-vline 
WA_WYT5H_STR-DATUM sy-vline 
WA_WYT5H_STR-UZEIT sy-vline 
WA_WYT5H_STR-USNAM sy-vline 
WA_WYT5H_STR-FEINA sy-vline      INTO ld_text SEPARATED BY SPACE.

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