Hi,
A new Nop instance is not creating the full text index for Product.Sku when you enable Full text indexing in Admin.
I am using ver 3.8 on a fresh install and new database. Here is the store procedure in question; it does not seem to create an index on SKU:
ALTER PROCEDURE [dbo].[FullText_Enable]
AS
BEGIN
--create catalog
EXEC('
IF NOT EXISTS (SELECT 1 FROM sys.fulltext_catalogs WHERE [name] = ''nopCommerceFullTextCatalog'')
CREATE FULLTEXT CATALOG [nopCommerceFullTextCatalog] AS DEFAULT')
--create indexes
DECLARE @create_index_text nvarchar(4000)
SET @create_index_text = '
IF NOT EXISTS (SELECT 1 FROM sys.fulltext_indexes WHERE object_id = object_id(''[Product]''))
CREATE FULLTEXT INDEX ON [Product]([Name], [ShortDescription], [FullDescription])
KEY INDEX [' + dbo.[nop_getprimarykey_indexname] ('Product') + '] ON [nopCommerceFullTextCatalog] WITH CHANGE_TRACKING AUTO'
EXEC(@create_index_text)
SET @create_index_text = '
IF NOT EXISTS (SELECT 1 FROM sys.fulltext_indexes WHERE object_id = object_id(''[LocalizedProperty]''))
CREATE FULLTEXT INDEX ON [LocalizedProperty]([LocaleValue])
KEY INDEX [' + dbo.[nop_getprimarykey_indexname] ('LocalizedProperty') + '] ON [nopCommerceFullTextCatalog] WITH CHANGE_TRACKING AUTO'
EXEC(@create_index_text)
SET @create_index_text = '
IF NOT EXISTS (SELECT 1 FROM sys.fulltext_indexes WHERE object_id = object_id(''[ProductTag]''))
CREATE FULLTEXT INDEX ON [ProductTag]([Name])
KEY INDEX [' + dbo.[nop_getprimarykey_indexname] ('ProductTag') + '] ON [nopCommerceFullTextCatalog] WITH CHANGE_TRACKING AUTO'
EXEC(@create_index_text)
END