Tag: distributed queries

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Troubleshooting problems with linked servers in SQL Server 2017

Troubleshooting problems with linked servers in SQL Server 2017 If you have problems with linked servers in SQL Server 2017, review this troubleshooting checklist to find potential solutions. 1. Check that you have appropriate permissions to create linked servers. To create a linked server, you must have ALTER ANY LINKED SERVER permission. So, if you have no this permission, you…...

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Undocumented SQL Server 2017 distributed queries stored procedures

Undocumented SQL Server 2017 distributed queries stored procedures SQL Server 2017 supports the following useful undocumented distributed queries stored procedures: sp_catalogs_rowset sp_catalogs_rowset2 sp_catalogs_rowset_rmt sp_linkedservers_rowset sp_linkedservers_rowset2 sp_catalogs_rowset The sp_catalogs_rowset stored procedure returns the database name for the specified database if the current user has access for this database. Syntax sp_catalogs_rowset [ @catalog_name = ] ‘catalog_name’ Arguments [ @catalog_name = ] ‘catalog_name’…...

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Tips for using SQL Server 2017 distributed queries

Tips for using SQL Server 2017 distributed queries Try to avoid using the TOP clause in the distributed queries. Because distributed queries that involve the TOP clause are never delegated to an OLE DB provider and are always evaluated locally, you should avoid using the TOP clause in the distributed queries to increase the local SQL Server performance. The first…...

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Some tips for using SQL Server 2016 distributed queries

Some tips for using SQL Server 2016 distributed queries Try to avoid using distribution queries or minimize it using. Because distribution transactions incur more overhead than general transactions, avoid using distribution queries, whenever possible. The first steps to optimize distributed queries against a SQL Server 2016 linked server is rewriting queries so, that the most work will be performed on…...

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Tips for using SQL Server 2014 Distributed Queries

Tips for using SQL Server 2014 Distributed Queries One of the first steps to optimize distributed queries against a SQL Server 2014 linked server is rewriting queries so, that the most work will be performed on the remote server, not the local server. You can run the remote query from Management Studio and take a look at the query plan…...

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Troubleshooting problems with linked servers in SQL Server 2012

Troubleshooting problems with linked servers in SQL Server 2012 If you have problems with linked servers in SQL Server 2012, review this troubleshooting checklist to find potential solutions. 1. Install the latest SQL Server 2012 service pack. Because some SQL Server 2012 linked servers bugs were fixed in SQL Server service packs, you should install the latest SQL Server service…...

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Tips for using SQL Server 2012 Distributed Queries

Tips for using SQL Server 2012 Distributed Queries Ensure that user own the table or a member of the sysadmin fixed server role, the db_owner fixed database role, or the db_ddladmin fixed database role on the linked server. To create the best query plans when you are using a table on a linked server that an instance of SQL Server,…...

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