How do you optimize stored procedures?

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Accepted Answer

Optimize stored procedures by refining queries, indexing, and minimizing resource usage for better performance.

Use proper indexing: Create indexes on columns used in WHERE clauses to speed up data retrieval. Example: CREATE INDEX idx_name ON table_name(column_name);
Avoid cursors: Use set-based operations instead of cursors for better performance. Example: Replace cursor loops with JOINs.
Optimize queries: Rewrite complex queries to reduce execution time. Example: Use EXISTS instead of IN for subqueries.
Limit result sets: Use SELECT TOP or WHERE clauses to return only necessary rows. Example: SELECT TOP 10 * FROM table_name WHERE condition;
Parameterize queries: Use parameters to avoid recompilation and improve execution plan reuse. Example: EXEC sp_executesql N'SELECT * FROM table_name WHERE column = @param', N'@param INT', @param = 1;

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