I have the need to search for an item that exists in one of many (~20) tables I can safely assume that the item only exists in one of the tables, all tables contains an index with the same column name and value type.
Tables vary in on of their columns, containing one of a few possible value types (int, string, binary. etc.)
What would be the most efficient way to search for the item, of a few items that match a criteria? Please note that there is NO NEED for any join, as item is uniquely stored in one row in one table.
Amit