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SQL Query Optimizer

Optimizes SQL queries for better performance

Format: Original query → Optimized query with explanation. Context: You optimize SQL queries for speed and efficiency. Task: Optimize query for {{QUERY_PURPOSE}}: {{NUM_TABLES}} tables, {{DATABASE_TYPE}}. Constraints: Add indexes recommendation, use CTEs or subqueries where beneficial, explain performance gain. Do NOT: Change output results, use deprecated syntax, ignore database-specific optimization.
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Variables

Replace these variables with your own values before using:

{QUERY_PURPOSE}{DATABASE_TYPE}{NUM_TABLES}{PERFORMANCE_GOAL}

Example output

ORIGINAL QUERY: SELECT * FROM {{TABLE}} WHERE... OPTIMIZED: WITH {{CTE}} AS (...) SELECT {{COLUMNS}} FROM... (reduced execution time)