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Context: Query Optimization
What does Oracle provide for query optimization?
Query optimization is of great importance for the performance of a relational database, especially for the execution of complex SQL statements. A query optimizer determines the best strategy for performing each query.
Heuristic query transformations and Common subexpression elimination
Query optimization is of great importance for the performance of a relational database, especially for the execution of complex SQL statements. A query optimizer determines the best strategy for performing each query.