CreateQuery hit (children 3)
 Identifier hit
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration UserID (children 1)
    DataType UInt32
   ColumnDeclaration URL (children 1)
    DataType String
   ColumnDeclaration EventTime (children 1)
    DataType DateTime
 Storage definition (children 3)
  Function MergeTree
  Function f1 (children 1)
   ExpressionList (children 1)
    Identifier URL
  Identifier EventTime
