org.apache.drill.exec.planner.logical

Class DrillFilterJoinRules

java.lang.Object

org.apache.drill.exec.planner.logical.DrillFilterJoinRules

public class DrillFilterJoinRules
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static org.apache.calcite.rel.rules.FilterJoinRule	DRILL_FILTER_INTO_JOIN The same as above, but with Drill's operators.
static org.apache.calcite.rel.rules.FilterJoinRule.Predicate	EQUAL_IS_DISTINCT_FROM Predicate that always returns true for any filter in OUTER join, and only true for EQUAL or IS_DISTINCT_FROM over RexInputRef in INNER join.
static org.apache.calcite.rel.rules.FilterJoinRule	FILTER_INTO_JOIN Rule that pushes predicates from a Filter into the Join below them.
static org.apache.calcite.rel.rules.FilterJoinRule	JOIN_PUSH_CONDITION Rule that pushes predicates in a Join into the inputs to the join.
static org.apache.calcite.rel.rules.FilterJoinRule.Predicate	STRICT_EQUAL_IS_DISTINCT_FROM Predicate that always returns true for any filter in OUTER join, and only true for strict EQUAL or IS_DISTINCT_FROM conditions (without any mathematical operations) over RexInputRef in INNER join.

Constructor Summary

Constructors

Constructor and Description
DrillFilterJoinRules()

Method Summary

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

EQUAL_IS_DISTINCT_FROM

public static final org.apache.calcite.rel.rules.FilterJoinRule.Predicate EQUAL_IS_DISTINCT_FROM

Predicate that always returns true for any filter in OUTER join, and only true for EQUAL or IS_DISTINCT_FROM over RexInputRef in INNER join. With this predicate, the filter expression that return true will be kept in the JOIN OP. Example: INNER JOIN, L.C1 = R.C2 and L.C3 + 100 = R.C4 + 100 will be kepted in JOIN. L.C5 < R.C6 will be pulled up into Filter above JOIN. OUTER JOIN, Keep any filter in JOIN.

STRICT_EQUAL_IS_DISTINCT_FROM

public static final org.apache.calcite.rel.rules.FilterJoinRule.Predicate STRICT_EQUAL_IS_DISTINCT_FROM

Predicate that always returns true for any filter in OUTER join, and only true for strict EQUAL or IS_DISTINCT_FROM conditions (without any mathematical operations) over RexInputRef in INNER join. With this predicate, the filter expression that return true will be kept in the JOIN OP. Example: INNER JOIN, L.C1 = R.C2 will be kepted in JOIN. L.C3 + 100 = R.C4 + 100, L.C5 < R.C6 will be pulled up into Filter above JOIN. OUTER JOIN, Keep any filter in JOIN.

FILTER_INTO_JOIN

public static final org.apache.calcite.rel.rules.FilterJoinRule FILTER_INTO_JOIN

Rule that pushes predicates from a Filter into the Join below them.

DRILL_FILTER_INTO_JOIN

public static final org.apache.calcite.rel.rules.FilterJoinRule DRILL_FILTER_INTO_JOIN

The same as above, but with Drill's operators.

JOIN_PUSH_CONDITION

public static final org.apache.calcite.rel.rules.FilterJoinRule JOIN_PUSH_CONDITION

Rule that pushes predicates in a Join into the inputs to the join.

Constructor Detail

DrillFilterJoinRules

public DrillFilterJoinRules()