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query governor cost limit Option

Use the query governor cost limit option to specify an upper limit on the time period in which a query can run. Queries that have estimated run times greater than this limit, return an error and are not executed. Query cost refers to the estimated elapsed time, in seconds, required to complete a query on a specific hardware configuration.

If you specify a nonzero, nonnegative value, the query governor disallows execution of any query that has an estimated cost exceeding that value. Specifying 0 (the default) for this option turns off the query governor, and all queries are allowed to run without any time limitation.

If you use sp_configure to change the value of query governor cost limit, the changed value is server wide. To change the value on a per-connection basis, use the SET QUERY_GOVERNOR_COST_LIMIT statement.

The query governor cost limit option is an advanced option. If you are using the sp_configure system stored procedure to change the setting, you can change query governor cost limit only when show advanced options is set to 1. The setting takes effect immediately (without a server restart).

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