spark技术分享

2012-09-12admin阅读(1540)赞(0)

PlanExpression Contract for Expressions with Query Plans

2012-09-11admin阅读(1460)赞(0)

ParseToTimestamp Expression ParseToTimestamp is a RuntimeReplaceable expression that represents the to_timestamp f ...

2012-09-10admin阅读(1493)赞(0)

ParseToDate Expression ParseToDate is a RuntimeReplaceable expression that represents the to_date function (in log ...

2012-09-09admin阅读(1725)赞(0)

OffsetWindowFunction Contract — Unevaluable Window Function Expressions

2012-09-08admin阅读(1709)赞(0)

Nondeterministic Expression Contract Nondeterministic is a contract for Catalyst expressions that are non-determin ...

2012-09-07admin阅读(1713)赞(0)

NamedExpression Contract — Catalyst Expressions with Name, ID and Qualifier

2012-09-06admin阅读(1320)赞(0)

Murmur3Hash Murmur3Hash is…​FIXME

2012-09-05admin阅读(1587)赞(0)

MonotonicallyIncreasingID Nondeterministic Leaf Expression

2012-09-04admin阅读(1540)赞(0)

Literal Leaf Expression Literal is a leaf expression that is created to represent a Scala value of a specific type ...

2012-09-03admin阅读(1594)赞(0)

ListQuery Subquery Expression ListQuery is a SubqueryExpression that represents SQL’s IN predicate with a su ...