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hub / github.com/MIT-DB-Class/simple-db-hw / avgSelectivity

Method avgSelectivity

src/java/simpledb/TableStats.java:131–134  ·  view source on GitHub ↗

The average selectivity of the field under op. @param field the index of the field @param op the operator in the predicate The semantic of the method is that, given the table, and then given a tuple, of which we do not know the value of the field, return the expected selectivity. You m

(int field, Predicate.Op op)

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