Answer
The Cardinality Estimator (CE) predicts row counts used to choose join types, memory grants, and access paths.
Poor estimates ? poor execution plans.
CE depends on statistics, data distribution, and query structure.
The Cardinality Estimator (CE) predicts row counts used to choose join types, memory grants, and access paths.
Poor estimates ? poor execution plans.
CE depends on statistics, data distribution, and query structure.
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Source: SugharaIQ