NewAvg creates a new Avg node.

NewCount creates a new Count node.

NewCountDistinct creates a new CountDistinct node.

NewFirst returns a new First node.

NewLast returns a new Last node.

NewMax returns a new Max node.

NewMin creates a new Min node.

NewSum returns a new Sum node.

Avg node to calculate the average from numeric column.

Count node to count how many rows are in the result set.

CountDistinct node to count how many rows are in the result set.

First agregation returns the first of all values in the selected column.

Last agregation returns the last of all values in the selected column.

Max agregation returns the greatest value of the selected column.

Min aggregation returns the smallest value of the selected column.

Sum agregation returns the sum of all values in the selected column.