Plan

A possible query execution plan. The time required to execute a query depends on the order the tables are accessed.

Methods
	Plan(TableFilter[] filters, int count, Expression condition) Create a query plan with the given order.
	Plan(TableFilter[] filters, int count, Expression condition) Create a query plan with the given order. Parameters: filters - the tables of the query count - the number of table items condition - the condition in the WHERE clause
double	calculateCost(Session session) Calculate the cost of this query plan.
double	calculateCost(Session session) Calculate the cost of this query plan. Parameters: session - the session Returns: the cost
TableFilter[]	getFilters() The the list of tables.
TableFilter[]	getFilters() The the list of tables. Returns: the list of tables
PlanItem	getItem(TableFilter filter) Get the plan item for the given table.
PlanItem	getItem(TableFilter filter) Get the plan item for the given table. Parameters: filter - the table Returns: the plan item
void	removeUnusableIndexConditions() Remove all index conditions that can not be used.
void	removeUnusableIndexConditions() Remove all index conditions that can not be used.