CreateQuery test_table (children 3)
 Identifier test_table
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration time_stamp_utc (children 1)
    DataType DateTime
   ColumnDeclaration impressions (children 1)
    DataType UInt32
   ColumnDeclaration clicks (children 1)
    DataType UInt32
   ColumnDeclaration revenue (children 1)
    DataType Float32
 Storage definition (children 2)
  Function MergeTree
  Identifier time_stamp_utc
