The article explores five common database query patterns that prevent effective use of indexes (non-SARGable queries) in SQL Server, affecting performance. It provides practical examples and solutions
for each pattern, helping developers write more efficient queries that can properly utilize database indexes.
Reasons to Read -- Learn:
how to identify and fix common SQL query patterns that prevent optimal index usage, potentially improving your database query performance by converting full table scans to index seeks
specific techniques for optimizing SQL queries, including how to properly handle date filtering, LIKE operations, and optional parameters in stored procedures with practical code examples
SQL Server's query optimization behavior with detailed explanations of implicit conversions, OR conditions, and JOIN operations, supported by execution plan analysis and performance statistics
8 min readauthor: Ravindra Devrani
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