ABAP Select data from SAP table WLF_S_SHD_ITEM_DATA_ALL into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WLF_S_SHD_ITEM_DATA_ALL
*  INTO TABLE @DATA(IT_WLF_S_SHD_ITEM_DATA_ALL2).
*--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_WLF_S_SHD_ITEM_DATA_ALL INDEX 1 INTO DATA(WA_WLF_S_SHD_ITEM_DATA_ALL2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WLF_S_SHD_ITEM_DATA_ALL>-HAS_OPEN_QUAN = 1.
<WLF_S_SHD_ITEM_DATA_ALL>-ITEM_QUAN = 1.
<WLF_S_SHD_ITEM_DATA_ALL>-ITEM_UOM = 1.
<WLF_S_SHD_ITEM_DATA_ALL>-IT_QUAN_ASSGMT = 1.
<WLF_S_SHD_ITEM_DATA_ALL>-ASSGD_QUAN = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WLF_S_SHD_ITEM_DATA_ALL-ASSGD_UOM, sy-vline,
  WA_WLF_S_SHD_ITEM_DATA_ALL-NUMERATOR, sy-vline,
  WA_WLF_S_SHD_ITEM_DATA_ALL-DENOMINATOR, sy-vline,
  WA_WLF_S_SHD_ITEM_DATA_ALL-VENDOR, sy-vline,
  WA_WLF_S_SHD_ITEM_DATA_ALL-CUSTOMER, sy-vline,
  WA_WLF_S_SHD_ITEM_DATA_ALL-MATNR, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WLF_S_SHD_ITEM_DATA_ALL 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_WLF_S_SHD_ITEM_DATA_ALL 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_WLF_S_SHD_ITEM_DATA_ALL INTO WA_WLF_S_SHD_ITEM_DATA_ALL.


*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 ITEM_UOM
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_WLF_S_SHD_ITEM_DATA_ALL-ITEM_UOM
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_S_SHD_ITEM_DATA_ALL-ITEM_UOM.
WRITE:/ 'New Value:', ld_input.

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

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

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

*Conversion exit MATN1, internal->external for field MATNR
CALL FUNCTION 'CONVERSION_EXIT_MATN1_OUTPUT'
  EXPORTING
    input =                      WA_WLF_S_SHD_ITEM_DATA_ALL-MATNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_WLF_S_SHD_ITEM_DATA_ALL-MATNR.
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_WLF_S_SHD_ITEM_DATA_ALL_STR, 
HAS_OPEN_QUAN TYPE STRING,
ITEM_QUAN TYPE STRING,
ITEM_UOM TYPE STRING,
IT_QUAN_ASSGMT TYPE STRING,
ASSGD_QUAN TYPE STRING,
ASSGD_UOM TYPE STRING,
NUMERATOR TYPE STRING,
DENOMINATOR TYPE STRING,
VENDOR TYPE STRING,
CUSTOMER TYPE STRING,
MATNR TYPE STRING,
BATCH TYPE STRING,
FUTURE TYPE STRING,
CLOSED TYPE STRING,
SH_IT_GUID TYPE STRING,
CR_NAME TYPE STRING,
CR_DATE TYPE STRING,
CR_TIME TYPE STRING,
CH_NAME TYPE STRING,
CH_DATE TYPE STRING,
CH_TIME TYPE STRING,
DATE_FROM TYPE STRING,
DATE_TO TYPE STRING,
CANCEL_FLAG TYPE STRING,
PLACE_HOLDER TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WLF_S_SHD_ITEM_DATA_ALL_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_WLF_S_SHD_ITEM_DATA_ALL_STR-HAS_OPEN_QUAN sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-ITEM_QUAN sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-ITEM_UOM sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-IT_QUAN_ASSGMT sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-ASSGD_QUAN sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-ASSGD_UOM sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-NUMERATOR sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-DENOMINATOR sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-VENDOR sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-CUSTOMER sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-MATNR sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-BATCH sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-FUTURE sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-CLOSED sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-SH_IT_GUID sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-CR_NAME sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-CR_DATE sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-CR_TIME sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-CH_NAME sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-CH_DATE sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-CH_TIME sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-DATE_FROM sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-DATE_TO sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-CANCEL_FLAG sy-vline 
WA_WLF_S_SHD_ITEM_DATA_ALL_STR-PLACE_HOLDER sy-vline      INTO ld_text SEPARATED BY SPACE.

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