e578e2cd98
# Proposed changes Issue Number: close #14554 ## Problem summary 1. provide a function **Plan.extraPlans** that returns extra plans, eg: LogicalSubQueryAlias in LogicalCTE. 2. combine the extra plans and the children in the AbstractPlan.treeString(), distinguished by the * at the beginning. ``` ========== PARSED PLAN ========== LogicalCTE ( aliasQueries=[LogicalSubQueryAlias ( alias=s )] ) |-*LogicalSubQueryAlias ( alias=s ) | +--LogicalProject ( projects=['s_suppkey] ) | +--LogicalFilter ( predicates=('s_suppkey = '') ) | +--LogicalCheckPolicy ( child=UnboundRelation ( nameParts=supplier ) ) | +--UnboundRelation ( nameParts=supplier ) +--LogicalProject ( projects=[*] ) +--LogicalJoin ( type=CROSS_JOIN, hashJoinConjuncts=[], otherJoinConjuncts=[] ) |--LogicalSubQueryAlias ( alias=t1 ) | +--LogicalCheckPolicy ( child=UnboundRelation ( nameParts=s ) ) | +--UnboundRelation ( nameParts=s ) +--LogicalSubQueryAlias ( alias=t2 ) +--LogicalCheckPolicy ( child=UnboundRelation ( nameParts=s ) ) +--UnboundRelation ( nameParts=s ) ```
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