CreateQuery dat (children 3)
 Identifier dat
 Columns definition (children 1)
  ExpressionList (children 2)
   ColumnDeclaration blockNum (children 1)
    DataType Decimal (children 1)
     ExpressionList (children 2)
      Literal UInt64_10
      Literal UInt64_0
   ColumnDeclaration eventTimestamp (children 1)
    DataType DateTime64 (children 1)
     ExpressionList (children 1)
      Literal UInt64_9
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Identifier eventTimestamp
