hub / github.com/awelm/simpledb / estimateTableCardinality

Method estimateTableCardinality

src/simpledb/TableStats.java:139–142 · view source on GitHub ↗

This method returns the number of tuples in the relation, given that a predicate with selectivity selectivityFactor is applied. @param selectivityFactor The selectivity of any predicates over the table @return The estimated cardinality of the scan with the specified selectivityFactor

(double selectivityFactor)

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Callers 4

estimateTableCardinalityTestMethod · 0.95

estimateJoinCardinalityMethod · 0.80

computeCostAndCardOfSubplanMethod · 0.80

printJoinsMethod · 0.80

Calls

no outgoing calls

Tested by 2

estimateTableCardinalityTestMethod · 0.76

estimateJoinCardinalityMethod · 0.64