The following is an example shows a SQL statement with two conditions “emp_dept=dpt_id and emp_dept<'L'” .
select * from employee, department
where emp_dept=dpt_id
Here the following is the query plan of this SQL in Tosska proprietary tree format, it takes 8.84 seconds to finish.
![[IMG]]()
The query plan looks...
How to Tune SQL statement with Transitive Dependency Improvement for MySQL?
select * from employee, department
where emp_dept=dpt_id
and emp_dept<'L'
and emp_id<1500000
and emp_salary= dpt_avg_salary
order by dpt_avg_salaryand emp_id<1500000
and emp_salary= dpt_avg_salary
Here the following is the query plan of this SQL in Tosska proprietary tree format, it takes 8.84 seconds to finish.
![[IMG]](http://live.staticflickr.com/65535/50861886931_80428e17f6_b.jpg)
The query plan looks...
How to Tune SQL statement with Transitive Dependency Improvement for MySQL?