In Open SQL, what syntax should be used to refer to a field from an alias table?

In Open SQL, when referring to a field from an alias table, the correct syntax to use is to employ the tilde (~) symbol. This notation establishes a clear distinction between the table (or its alias) and the specific field being referenced, ensuring that queries are unambiguous, especially when dealing with multiple tables or joins that might include fields with the same name.

For example, if you've defined an alias for a table, you would use the alias followed by the tilde and then the field name to correctly point to that particular field. This syntax is integral to maintaining clarity in the SQL statements, particularly in complex queries involving multiple tables.

The other syntax options, while they may seem plausible, do not conform to the standard for Open SQL field referencing in the context of alias tables. This makes the choice with the tilde the appropriate and correct one.