DfsRel runs a callback |cb| on all execution plans in the memo expression group.

&.

|.

^.

/.

div.

-.

%.

*.

+.

<<.

>>.

unknown.

ANTI_JOIN.

HASH_JOIN.

INNER_JOIN.

JOIN_FIXED_ORDER.

JOIN_ORDER.

LEFT_DEEP.

LEFT_OUTER_LOOKUP_JOIN.

LOOKUP_JOIN.

MERGE_JOIN.

NO_ICP.

SEMI_JOIN.

.

ExprGroup is a linked list of plans that return the same result set defined by row count and schema.

Memo collects a forest of query plans structured by logical and physical equivalency.

RangeHeap contains all the information necessary to construct a RangeHeap join.

Coster types can estimate the CPU and memory cost of physical execution operators.

JoinRel represents a plan.JoinNode or plan.CrossJoin.

RelExpr wraps a sql.Node for use as a ExprGroup linked list node.

SourceRel represents a data source, like a tableScan, subqueryAlias, or list of values.