CreateQuery rate_test2 (children 3)
 Identifier rate_test2
 Columns definition (children 1)
  ExpressionList (children 3)
   ColumnDeclaration uid (children 2)
    DataType UInt32
    Literal UInt64_1
   ColumnDeclaration timestamp (children 1)
    DataType DateTime
   ColumnDeclaration event (children 1)
    DataType UInt32
 Storage definition (children 1)
  Function Memory