$select public property The columns being selected. For example

andWhere() public method Adds an additional WHERE condition

having() public method Sets the HAVING part of the query

from() public method Sets the FROM part of the query.

params() public method Sets the parameters to be bound

$having public property The condition to be applied in the GROUP

rightJoin() public method Appends a RIGHT OUTER JOIN part

addParams() public method Adds additional parameters to

average() public method Returns the average of the specified

queryScalar() protected method Queries a scalar value