on(_:)

The object (usually a table) which owns the index may be explicitly specified. Some dialects treat indexes as database-level objects in their own right and treat specifying an owner as an error, while others require the owning object in order to perform the drop operation at all. At the time of this writing, there is no support for specifying this in SQLDialect; callers must ensure that they either specify or omit an owning object as appropriate.

@discardableResult func on(_ owningObject: any SQLExpression) -> Self