CreateQuery e (children 3)
 Identifier e
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration a (children 1)
    DataType UInt64
   ColumnDeclaration t (children 1)
    DataType DateTime
 Storage definition (children 3)
  Function MergeTree
  Function toDate (children 1)
   ExpressionList (children 1)
    Identifier t
  Function tuple (children 1)
   ExpressionList
