CreateQuery test_base_condition (children 3)
 Identifier test_base_condition
 Columns definition (children 1)
  ExpressionList (children 4)
   ColumnDeclaration dt (children 1)
    DataType DateTime
   ColumnDeclaration id (children 1)
    DataType int
   ColumnDeclaration action (children 1)
    DataType String
   ColumnDeclaration referrer (children 1)
    DataType String
 Storage definition (children 3)
  Function MergeTree (children 1)
   ExpressionList
  Identifier dt
  Identifier id
