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Tips for using views in SQL Server 2019

Tips for using views in SQL Server 2019 Use views instead of heavy-duty queries to reduce network traffic. Using views instead of heavy-duty queries can reduce network traffic, because your clients will send to server only a simple query, such as SELECT * FROM VIEW_NAME (perhaps with some parameters), instead of large heavy-duty queries text. Consider using stored procedures instead…...

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Tips for using stored procedures in SQL Server 2019

Tips for using stored procedures in SQL Server 2019 Try to avoid using temporary tables and DDL (Data Definition Language) statements inside your stored procedure. Using temporary tables or DDL statements inside stored procedure reduces the chance to reuse the execution plan. Call stored procedure using its fully qualified name. The complete name of an object consists of four identifiers:…...

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Tips for using DBCC commands in SQL Server 2019

Tips for using DBCC commands in SQL Server 2019 Try to run the DBCC commands when there are no other disk I/O operations, such as disk backups, replication and so on. Use DBCC CHECKFILEGROUP instead of DBCC CHECKDB, if you need to check only specified filegroup, not entire database. If your database contains several filegroups and you need to check…...

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Tips for using linked servers in SQL Server 2019

Tips for using linked servers in SQL Server 2019 Rewrite remote 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 to find out which parts of the remote query are performing on the remote server…...

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Tips for using indexed views in SQL Server 2019

Tips for using indexed views in SQL Server 2019 Avoid creating indexes on a view when the queries that use the view don’t contain JOINs or aggregations. In this case, the queries will not take advantages of the view’s indexes and the queries performance will be the same. Don’t create index on column(s) which values has low selectivity. For example,…...

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Tips for using User-Defined Functions in SQL Server 2019

Tips for using User-Defined Functions in SQL Server 2019 Try to use Scalar UDF Inlining feature. SQL Server 2019 supports Scalar UDF Inlining. This feature automatically transforms scalar UDFs into relational expressions and embeds them in the calling SQL query. This transformation improves the performance of workloads that take advantage of scalar UDFs. A Scalar UDF can be inline when…...

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Tips for using full-text search in SQL Server 2019

Tips for using full-text search in SQL Server 2019 Make full-text index population during periods of low database access. Because full-text index population takes some time, these updates should be scheduled during CPU idle time and slow production periods. Reduce the full-text unique key size. To create a full-text index, the table to be indexed must have a unique index…....

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Some tips for using SQL Server 2019 cursors

Some tips for using SQL Server 2019 cursors Try to avoid using SQL Server cursors, whenever possible. SQL Server cursors can results in some performance degradation in comparison with select statements. Try to use correlated subquery or derived tables, if you need to perform row-by-row operations. Use READ ONLY cursors, whenever possible, instead of updatable cursors. Because using cursors can…...

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Some tips for using SQL Server 2019 triggers

Some tips for using SQL Server 2019 triggers Try to minimize the number of rows affected in a trigger. The more number of rows affected in a trigger, the more time a trigger takes to run. So, try to reduce the number of rows affected in a trigger. Consider disabling trigger’s recursion. Triggers are said to be recursive when a…...

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Tips for using constraints in SQL Server 2019

Tips for using constraints in SQL Server 2019 Avoid using CHECK_CONSTRAINTS hint with bulk copy program. Using this hint can significantly degrade performance of the bulk copy operation, because for each row loaded the CHECK constraints defined on the destination table will be executed. Without the CHECK_CONSTRAINTS hint, any CHECK constraints will be ignored. Consider using the NOT FOR REPLICATION…...

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