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PredicateHelper¶

isLikelySelective¶

isLikelySelective(
  e: Expression): Boolean

isLikelySelective is true (enabled) for the following Expressions:

Not with an Expression that is likely to be selective
And with either Expression likely to be selective
Or with both Expressions likely to be selective
StringRegexExpression
- Like
- RLike
BinaryComparison
- EqualNullSafe
- EqualTo
- GreaterThan
- GreaterThanOrEqual
- LessThan
- LessThanOrEqual
In
InSet
StringPredicate
- Contains
- EndsWith
- StartsWith
BinaryPredicate
MultiLikeBase
- LikeAll
- NotLikeAll
- LikeAny
- NotLikeAny

isLikelySelective is used when:

InjectRuntimeFilter logical optimization is requested to isSelectiveFilterOverScan
PartitionPruning logical optimization is requested to hasSelectivePredicate