Which of the following is an important consideration when tuning an SQL statement?
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The number of CPUs on the server
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The degree of parallelism on the tables
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The use of bitmap indexes
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The quality of the SQL optimization
SQL optimization quality directly determines statement performance - a well-optimized query executes efficiently while a poorly optimized one performs badly regardless of other factors. The optimizer's ability to choose efficient execution plans is more critical than CPUs, parallelism, or index types.
When tuning a SQL statement, the central factor is whether the optimizer produced a good execution plan — that is, the quality of the SQL optimization itself (join order, access paths, cardinality estimates, etc.). Hardware factors like CPU count or parallelism, or the mere presence of bitmap indexes, are secondary details that only matter in how they feed into that plan; they don't by themselves determine whether the statement performs well.