common

const (
	None        AggregateFunction = 0
	MaxOverTime AggregateFunction = 1
	AvgOverTime AggregateFunction = 2
)

const (
	Invalid DataType = iota
	Bool
	Int
	Int8
	Int16
	Int32
	Int64
	Uint
	Uint8
	Uint16
	Uint32
	Uint64
	Float32
	Float64
	String
)

const (
	NoneFunction FunctionType = iota

	// Aggregation Function
	FunctionCount  // Returns the number of non-null field values
	FuncDistinct   // Returns the list of unique field values
	FuncIntegral   // Returns the area under the curve for subsequent field values
	FunctionMean   // Returns the arithmetic mean (average) of field values
	FunctionMedian // Returns the middle value from a sorted list of field values
	FunctionMode   // Returns the most frequent value in a list of field values
	FunctionSpread // Returns the difference between the minimum and maximum field values
	FunctionStddev // Returns the standard deviation of field values
	FunctionSum    // Returns the sum of field values

	// Selector function
	FunctionBottom     // Returns the smallest N field values
	FunctionFirst      // Returns the field value with the oldest timestamp
	FunctionLast       // Returns the field value with the most recent timestamp
	FunctionMax        // Returns the greatest field value
	FunctionMin        // Returns the lowest field value
	FunctionPercentile // Returns the Nth percentile field value
	FunctionSample     // Returns a random sample of N field values. SAMPLE() uses reservoir sampling to generate the random points
	FunctionTop        // Returns the greatest N field values

	// Transformation function
	FuncDerivative // Returns the rate of change between subsequent field values
)

const (
	NoneOrder Order = iota
	Asc             // Represent ascending order
	Desc            // Represent descending order
)