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Generated on 2026-10-13 05:06 | Confidential Client Asset

Statistics & Cost Estimation

Published September 11, 2026 By Sai Sree Ram Gundepudi

Statistics & Cost Estimation

The optimizer uses statistics to choose the best query plan.

EXEC DBMS_STATS.GATHER_TABLE_STATS('HR', 'EMPLOYEES');

Cost estimation considers cardinality, selectivity, and access paths.

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