CreateQuery t (children 3)
 Identifier t
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration id (children 1)
    DataType UInt16
   ColumnDeclaration u (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType Int32
   ColumnDeclaration s (children 1)
    DataType LowCardinality (children 1)
     ExpressionList (children 1)
      DataType String
 Storage definition (children 2)
  Function MergeTree
  Identifier id
