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Is the execution plan the same as the SQL query?
Totally understand that, but an execution plan is a combination of queries, each with its own step. The problem is that Query 4, which is exactly the same query text between the two, is radically different between the sp_executeSQL call and the adhoc query run from sql management studio– Nathan TregillusMar 30 ’11 at 16:46
Is the SQL Server execution plan like a black hole?
When a DBA is working with the SQL Server, he/she might sometimes say that the execution plan is like a black hole. As a matter of fact, though, you have to look at execution plans as weather forecasts.
How to check if SQL Server chooses the optimal execution plan?
Let us check whether SQL Server chooses the optimal execution plan for the previous query or not. What we are going to do is to go ahead and explicitly state a hash join and compare execution plans. This shows that giving an explicit hint in this particular case seems to be costly.
What are the fundamentals of SQL Server query optimization?
The fundamentals of query optimization are based on the fact that SQL Server has always been a cost-based optimizer. Cost-based optimization involves generating multiple execution plans and selecting the lowest cost execution plans to fire and finally execute a query
Can a SQL explain plan be different on different servers?
Question: I have a SQL statement that has a fast execution plan on one server and a slow execution plan on another server. The SQL is identical, so I would expect that the SQL explain plan would not be different. How can I tell why a SQL execution plan is different on different servers?
What’s the difference between execution plan and execution plan?
The actual execution plan is shown after a query is executed. The difference here is that SQL Server can tell you exactly how many reads were performed, how many rows were read, and what joins were performed. If it’s a long-running query, it will take a while to get the execution plan. Parameters, if required, must be passed in.
What’s the difference between a SQL query and a text plan?
The difference here is that SQL Server can tell you exactly how many reads were performed, how many rows were read, and what joins were performed. If it’s a long-running query, it will take a while to get the execution plan. Parameters, if required, must be passed in. The text plan is generated using SET STATISTICS PROFILE ON.