CreateQuery mv (children 3)
 Identifier mv
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 2)
     Identifier key
     Function uniqExact (alias uniq_values) (children 1)
      ExpressionList (children 1)
       Function CAST (children 1)
        ExpressionList (children 2)
         Identifier value
         Literal \'String\'
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier ephemeral
    ExpressionList (children 1)
     Identifier key
 ViewTargets
