CTERelationRef Leaf Logical Operator¶

CTERelationRef is a leaf logical operator.

Creating Instance¶

CTERelationRef takes the following to be created:

• CTE Id
• _resolved flag
• Output Attributes
• Optional Statistics (default: None)

CTERelationRef is created when:

• CTESubstitution logical resolution rule is executed
• ResolveWithCTE logical resolution rule is executed

MultiInstanceRelation¶

CTERelationRef is a MultiInstanceRelation.

Node Patterns¶

nodePatterns: Seq[TreePattern]

nodePatterns is CTE.

Query Planning¶

CTERelationRef logical operators are planned by WithCTEStrategy execution planning strategy (to ShuffleExchangeExec physical operators).