Tag: intersect

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SQL Server 2016 Transact-SQL Optimization Tips (Part 2)

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SQL Server 2016 Transact-SQL Optimization Tips (Part 2) Try to restrict the queries result set by returning only the particular columns from the table, not all table’s columns. This can results in good performance benefits, because SQL Server will return to client only particular columns, not all table’s columns. This can reduce network traffic and boost the overall performance of...

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Combining Multiple Queries In a Single One

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Combining Multiple Queries In a Single One This is often the case when you need to query more than one table in a single query, or even issue more than one subquery to a single table, combining those subqueries in a single query. There are several types of queries that come within the above description, including joins, hierarchical queries, and...

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