ABAP Select data from SAP table WSI_OCI_ITEM_S into internal table

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

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

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

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM WSI_OCI_ITEM_S
*  INTO TABLE @DATA(IT_WSI_OCI_ITEM_S2).
*--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_WSI_OCI_ITEM_S INDEX 1 INTO DATA(WA_WSI_OCI_ITEM_S2).


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

*To update a field value using a field symbol simply change the value via the field symbol pointer
<WSI_OCI_ITEM_S>-LINE = 1.
<WSI_OCI_ITEM_S>-DESCRIPTION = 1.
<WSI_OCI_ITEM_S>-QUANTITY = 1.
<WSI_OCI_ITEM_S>-UNIT = 1.
<WSI_OCI_ITEM_S>-PRICE = 1.

ENDLOOP.

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

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_WSI_OCI_ITEM_S-PRICEUNIT, sy-vline,
  WA_WSI_OCI_ITEM_S-CURRENCY, sy-vline,
  WA_WSI_OCI_ITEM_S-MATNR, sy-vline,
  WA_WSI_OCI_ITEM_S-LEADTIME, sy-vline,
  WA_WSI_OCI_ITEM_S-VENDOR, sy-vline,
  WA_WSI_OCI_ITEM_S-VENDORMAT, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_WSI_OCI_ITEM_S 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_WSI_OCI_ITEM_S 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_WSI_OCI_ITEM_S INTO WA_WSI_OCI_ITEM_S.


*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_WSI_OCI_ITEM_S_STR, 
LINE TYPE STRING,
DESCRIPTION TYPE STRING,
QUANTITY TYPE STRING,
UNIT TYPE STRING,
PRICE TYPE STRING,
PRICEUNIT TYPE STRING,
CURRENCY TYPE STRING,
MATNR TYPE STRING,
LEADTIME TYPE STRING,
VENDOR TYPE STRING,
VENDORMAT TYPE STRING,
MANUFACTMAT TYPE STRING,
MANUFACTCODE TYPE STRING,
MATGROUP TYPE STRING,
SERVICE TYPE STRING,
CONTRACT TYPE STRING,
CONTRACT_ITEM TYPE STRING,
EXT_QUOTE_ID TYPE STRING,
EXT_QUOTE_ITEM TYPE STRING,
EXT_PRODUCT_ID TYPE STRING,
CUST_FIELD1 TYPE STRING,
CUST_FIELD2 TYPE STRING,
CUST_FIELD3 TYPE STRING,
CUST_FIELD4 TYPE STRING,
CUST_FIELD5 TYPE STRING,
ATTACHMENT TYPE STRING,
ATTACHMENT_TITLE TYPE STRING,
ATTACHMENT_PURPOSE TYPE STRING,
EXT_SCHEMA_TYPE TYPE STRING,
EXT_CATEGORY_ID TYPE STRING,
EXT_CATEGORY TYPE STRING,
SLD_SYS_NAME TYPE STRING,
PARENT_ID TYPE STRING,
ITEM_TYPE TYPE STRING,
SUSTAIN_OVERALL_RATING TYPE STRING,
SUSTAIN_RECYCLED_CONTENT TYPE STRING,
SUSTAIN_DIRECT_ENERGY TYPE STRING,END OF T_EKKO_STR.
DATA: WA_WSI_OCI_ITEM_S_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_WSI_OCI_ITEM_S_STR-LINE sy-vline 
WA_WSI_OCI_ITEM_S_STR-DESCRIPTION sy-vline 
WA_WSI_OCI_ITEM_S_STR-QUANTITY sy-vline 
WA_WSI_OCI_ITEM_S_STR-UNIT sy-vline 
WA_WSI_OCI_ITEM_S_STR-PRICE sy-vline 
WA_WSI_OCI_ITEM_S_STR-PRICEUNIT sy-vline 
WA_WSI_OCI_ITEM_S_STR-CURRENCY sy-vline 
WA_WSI_OCI_ITEM_S_STR-MATNR sy-vline 
WA_WSI_OCI_ITEM_S_STR-LEADTIME sy-vline 
WA_WSI_OCI_ITEM_S_STR-VENDOR sy-vline 
WA_WSI_OCI_ITEM_S_STR-VENDORMAT sy-vline 
WA_WSI_OCI_ITEM_S_STR-MANUFACTMAT sy-vline 
WA_WSI_OCI_ITEM_S_STR-MANUFACTCODE sy-vline 
WA_WSI_OCI_ITEM_S_STR-MATGROUP sy-vline 
WA_WSI_OCI_ITEM_S_STR-SERVICE sy-vline 
WA_WSI_OCI_ITEM_S_STR-CONTRACT sy-vline 
WA_WSI_OCI_ITEM_S_STR-CONTRACT_ITEM sy-vline 
WA_WSI_OCI_ITEM_S_STR-EXT_QUOTE_ID sy-vline 
WA_WSI_OCI_ITEM_S_STR-EXT_QUOTE_ITEM sy-vline 
WA_WSI_OCI_ITEM_S_STR-EXT_PRODUCT_ID sy-vline 
WA_WSI_OCI_ITEM_S_STR-CUST_FIELD1 sy-vline 
WA_WSI_OCI_ITEM_S_STR-CUST_FIELD2 sy-vline 
WA_WSI_OCI_ITEM_S_STR-CUST_FIELD3 sy-vline 
WA_WSI_OCI_ITEM_S_STR-CUST_FIELD4 sy-vline 
WA_WSI_OCI_ITEM_S_STR-CUST_FIELD5 sy-vline 
WA_WSI_OCI_ITEM_S_STR-ATTACHMENT sy-vline 
WA_WSI_OCI_ITEM_S_STR-ATTACHMENT_TITLE sy-vline 
WA_WSI_OCI_ITEM_S_STR-ATTACHMENT_PURPOSE sy-vline 
WA_WSI_OCI_ITEM_S_STR-EXT_SCHEMA_TYPE sy-vline 
WA_WSI_OCI_ITEM_S_STR-EXT_CATEGORY_ID sy-vline 
WA_WSI_OCI_ITEM_S_STR-EXT_CATEGORY sy-vline 
WA_WSI_OCI_ITEM_S_STR-SLD_SYS_NAME sy-vline 
WA_WSI_OCI_ITEM_S_STR-PARENT_ID sy-vline 
WA_WSI_OCI_ITEM_S_STR-ITEM_TYPE sy-vline 
WA_WSI_OCI_ITEM_S_STR-SUSTAIN_OVERALL_RATING sy-vline 
WA_WSI_OCI_ITEM_S_STR-SUSTAIN_RECYCLED_CONTENT sy-vline 
WA_WSI_OCI_ITEM_S_STR-SUSTAIN_DIRECT_ENERGY sy-vline      INTO ld_text SEPARATED BY SPACE.

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