ABAP Select data from SAP table WTYBW_ITEM 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 WTYBW_ITEM 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 WTYBW_ITEM. 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 WTYBW_ITEM 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_WTYBW_ITEM TYPE STANDARD TABLE OF WTYBW_ITEM,
      WA_WTYBW_ITEM TYPE WTYBW_ITEM,
      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: <WTYBW_ITEM> TYPE WTYBW_ITEM.

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WTYBW_ITEM
*  INTO TABLE @DATA(IT_WTYBW_ITEM2).
*--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_WTYBW_ITEM INDEX 1 INTO DATA(WA_WTYBW_ITEM2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WTYBW_ITEM>-HEADER_GUID = 1.
<WTYBW_ITEM>-VERSION_GUID = 1.
<WTYBW_ITEM>-GUID = 1.
<WTYBW_ITEM>-POSKT = 1.
<WTYBW_ITEM>-DEFCT = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WTYBW_ITEM-ITMNO, sy-vline,
  WA_WTYBW_ITEM-QUANT, sy-vline,
  WA_WTYBW_ITEM-MEINH, sy-vline,
  WA_WTYBW_ITEM-REJCD_OC, sy-vline,
  WA_WTYBW_ITEM-REJCD_IV, sy-vline,
  WA_WTYBW_ITEM-RETPA, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WTYBW_ITEM 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_WTYBW_ITEM 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_WTYBW_ITEM INTO WA_WTYBW_ITEM.


*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 CUNIT, internal->external for field MEINH
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WTYBW_ITEM-MEINH
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYBW_ITEM-MEINH.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WTYBW_ITEM-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYBW_ITEM-MATNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field VENDOR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WTYBW_ITEM-VENDOR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYBW_ITEM-VENDOR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field CUSTOMER
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WTYBW_ITEM-CUSTOMER
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYBW_ITEM-CUSTOMER.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field HERST
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_WTYBW_ITEM-HERST
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WTYBW_ITEM-HERST.
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_WTYBW_ITEM_STR, 
HEADER_GUID TYPE STRING,
VERSION_GUID TYPE STRING,
GUID TYPE STRING,
POSKT TYPE STRING,
DEFCT TYPE STRING,
ITMNO TYPE STRING,
QUANT TYPE STRING,
MEINH TYPE STRING,
REJCD_OC TYPE STRING,
REJCD_IV TYPE STRING,
RETPA TYPE STRING,
V_CRNCY TYPE STRING,
CAUSP TYPE STRING,
VALIC TYPE STRING,
VALOV TYPE STRING,
VALIV TYPE STRING,
VALOC TYPE STRING,
MATNR TYPE STRING,
VENDOR TYPE STRING,
CUSTOMER TYPE STRING,
HERST TYPE STRING,
RETPA_V TYPE STRING,
RESULT_OUT_MWTYI TYPE STRING,
RESULT_IN_MWTYI TYPE STRING,
POSKT_CUST TYPE STRING,
REFDT_REFNR TYPE STRING,
FINAL_ITEM TYPE STRING,
HDATE TYPE STRING,
RECALLNO TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WTYBW_ITEM_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_WTYBW_ITEM_STR-HEADER_GUID sy-vline 
WA_WTYBW_ITEM_STR-VERSION_GUID sy-vline 
WA_WTYBW_ITEM_STR-GUID sy-vline 
WA_WTYBW_ITEM_STR-POSKT sy-vline 
WA_WTYBW_ITEM_STR-DEFCT sy-vline 
WA_WTYBW_ITEM_STR-ITMNO sy-vline 
WA_WTYBW_ITEM_STR-QUANT sy-vline 
WA_WTYBW_ITEM_STR-MEINH sy-vline 
WA_WTYBW_ITEM_STR-REJCD_OC sy-vline 
WA_WTYBW_ITEM_STR-REJCD_IV sy-vline 
WA_WTYBW_ITEM_STR-RETPA sy-vline 
WA_WTYBW_ITEM_STR-V_CRNCY sy-vline 
WA_WTYBW_ITEM_STR-CAUSP sy-vline 
WA_WTYBW_ITEM_STR-VALIC sy-vline 
WA_WTYBW_ITEM_STR-VALOV sy-vline 
WA_WTYBW_ITEM_STR-VALIV sy-vline 
WA_WTYBW_ITEM_STR-VALOC sy-vline 
WA_WTYBW_ITEM_STR-MATNR sy-vline 
WA_WTYBW_ITEM_STR-VENDOR sy-vline 
WA_WTYBW_ITEM_STR-CUSTOMER sy-vline 
WA_WTYBW_ITEM_STR-HERST sy-vline 
WA_WTYBW_ITEM_STR-RETPA_V sy-vline 
WA_WTYBW_ITEM_STR-RESULT_OUT_MWTYI sy-vline 
WA_WTYBW_ITEM_STR-RESULT_IN_MWTYI sy-vline 
WA_WTYBW_ITEM_STR-POSKT_CUST sy-vline 
WA_WTYBW_ITEM_STR-REFDT_REFNR sy-vline 
WA_WTYBW_ITEM_STR-FINAL_ITEM sy-vline 
WA_WTYBW_ITEM_STR-HDATE sy-vline 
WA_WTYBW_ITEM_STR-RECALLNO sy-vline      INTO ld_text SEPARATED BY SPACE.

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