CreateQuery mv2 (children 4)
 Identifier mv2
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration s (children 1)
    DataType String
   ColumnDeclaration x (children 2)
    DataType String
    Literal \'d\'
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 1)
     Function concat (alias s) (children 1)
      ExpressionList (children 2)
       Function tupleElement (children 1)
        ExpressionList (children 2)
         Function tuple (children 1)
          ExpressionList (children 1)
           Asterisk
         Literal UInt64_1
       Literal \'mv2\'
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier src
 ViewTargets
