I am creating an employee report that allows the user to select date. The report needs to provide the Position information, the salary and the home dept (along with some other data) for all acitve employees on that date. The historical Home dept, Position data, and salary are stored in 3 different tables with a change date. So, I created an sql command and based the report on the command. It took a little over 2 hours to run. So, I created a stored procedure, it takes about 30 minutes to run. Our DBA thinks that is still too long. I am attaching a copy of the stored procedure. I would welcome any suggestions on how this might be made to run faster. Thanks.usp-COO-EmployeeHistory.txt
One suggestion is to move the subqueries in your WHERE clauses to the FROM clause. When you have subqueries in the WHERE clause, the query is run for each row of data returned from the rest of the query.
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