spark技术分享

2013-03-30admin阅读(1903)赞(0)

PullupCorrelatedPredicates Logical Optimization

2013-03-29admin阅读(1837)赞(0)

PropagateEmptyRelation Logical Optimization

2013-03-28admin阅读(1845)赞(0)

OptimizeSubqueries Logical Optimization OptimizeSubqueries is a base logical optimization that FIXME. OptimizeSu ...

2013-03-27admin阅读(2734)评论(0)赞(1)

[crayon-6926c902547ec693532374/]

2013-03-27admin阅读(1840)赞(0)

OptimizeIn Logical Optimization OptimizeIn is a base logical optimization that transforms logical plans with In pr ...

2013-03-26admin阅读(1731)赞(0)

NullPropagation Logical Optimization — Nullability (NULL Value) Propagation

2013-03-25admin阅读(1941)赞(0)

LimitPushDown Logical Optimization LimitPushDown is a base logical optimization that transforms the following logi ...

2013-03-24admin阅读(1602)赞(0)

GetCurrentDatabase Logical Optimization GetCurrentDatabase is a base logical optimization that gives the current d ...

2013-03-23admin阅读(1745)赞(0)

EliminateView Logical Optimization EliminateView is a base logical optimization that removes (eliminates) View log ...

2013-03-22admin阅读(1872)赞(0)

EliminateSubqueryAliases Logical Optimization