SelectWithUnionQuery (children 2)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 2)
    Identifier t.database
    Identifier t.name
   TablesInSelectQuery (children 2)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.tables (alias t)
    TablesInSelectQueryElement (children 2)
     TableExpression (children 1)
      Subquery (alias db) (children 1)
       SelectWithUnionQuery (children 1)
        ExpressionList (children 1)
         SelectQuery (children 1)
          ExpressionList (children 2)
           Literal \'system\' (alias base)
           Literal \'one\' (alias name)
     TableJoin (children 1)
      ExpressionList (children 1)
       Identifier name
   Function equals (children 1)
    ExpressionList (children 2)
     Identifier t.database
     Identifier db.base
 Identifier PrettyCompactNoEscapes