spark技术分享

2013-03-30admin阅读(1827)赞(0)

PullupCorrelatedPredicates Logical Optimization

2013-03-29admin阅读(1755)赞(0)

PropagateEmptyRelation Logical Optimization

2013-03-28admin阅读(1757)赞(0)

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

2013-03-27admin阅读(2642)评论(0)赞(1)

[crayon-6813ac4f9ce93651959243/]

2013-03-27admin阅读(1730)赞(0)

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

2013-03-26admin阅读(1660)赞(0)

NullPropagation Logical Optimization — Nullability (NULL Value) Propagation

2013-03-25admin阅读(1869)赞(0)

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

2013-03-24admin阅读(1528)赞(0)

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

2013-03-23admin阅读(1669)赞(0)

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

2013-03-22admin阅读(1798)赞(0)

EliminateSubqueryAliases Logical Optimization