我的flink 版本是 flink-1.12.2-bin-scala_2.12 我的sql 是 SELECT o.order_id, o.total, c.country, c.zip FROM Orders AS o JOIN Customers FOR SYSTEM_TIME AS OF o.proc_time AS c ON o.customer_id = c.id and o.customer_id is not null and c.id is not null ; 或者 SELECT o.order_id, o.total, c.country, c.zip FROM Orders AS o JOIN Customers FOR SYSTEM_TIME AS OF o.proc_time AS c ON o.customer_id = c.id ;
都会报如下错误,麻烦帮我看看正确的写法是什么样的,灰常感谢 Exception in thread "main" org.apache.flink.table.api.ValidationException: Currently the join key in Temporal Table Join can not be empty. at org.apache.flink.table.planner.plan.rules.logical.LogicalCorrelateToJoinFromGeneralTemporalTableRule.onMatch(LogicalCorrelateToJoinFromTemporalTableRule.scala:272) at org.apache.calcite.plan.AbstractRelOptPlanner.fireRule(AbstractRelOptPlanner.java:333) at org.apache.calcite.plan.hep.HepPlanner.applyRule(HepPlanner.java:542) at org.apache.calcite.plan.hep.HepPlanner.applyRules(HepPlanner.java:407) at org.apache.calcite.plan.hep.HepPlanner.executeInstruction(HepPlanner.java:243) at org.apache.calcite.plan.hep.HepInstruction$RuleInstance.execute(HepInstruction.java:127) at org.apache.calcite.plan.hep.HepPlanner.executeProgram(HepPlanner.java:202) at org.apache.calcite.plan.hep.HepPlanner.findBestExp(HepPlanner.java:189) at org.apache.flink.table.planner.plan.optimize.program.FlinkHepProgram.optimize(FlinkHepProgram.scala:69) at org.apache.flink.table.planner.plan.optimize.program.FlinkHepRuleSetProgram.optimize(FlinkHepRuleSetProgram.scala:87) at org.apache.flink.table.planner.plan.optimize.program.FlinkGroupProgram.$anonfun$optimize$2(FlinkGroupProgram.scala:63) at scala.collection.TraversableOnce$folder$1.apply(TraversableOnce.scala:196) at scala.collection.TraversableOnce$folder$1.apply(TraversableOnce.scala:194) at scala.collection.Iterator.foreach(Iterator.scala:943) at scala.collection.Iterator.foreach$(Iterator.scala:943) at scala.collection.AbstractIterator.foreach(Iterator.scala:1431) at scala.collection.IterableLike.foreach(IterableLike.scala:74) at scala.collection.IterableLike.foreach$(IterableLike.scala:73) at scala.collection.AbstractIterable.foreach(Iterable.scala:56) at scala.collection.TraversableOnce.foldLeft(TraversableOnce.scala:199) at scala.collection.TraversableOnce.foldLeft$(TraversableOnce.scala:192) at scala.collection.AbstractTraversable.foldLeft(Traversable.scala:108) at org.apache.flink.table.planner.plan.optimize.program.FlinkGroupProgram.$anonfun$optimize$1(FlinkGroupProgram.scala:60) at org.apache.flink.table.planner.plan.optimize.program.FlinkGroupProgram.$anonfun$optimize$1$adapted(FlinkGroupProgram.scala:55) at scala.collection.TraversableOnce$folder$1.apply(TraversableOnce.scala:196) at scala.collection.TraversableOnce$folder$1.apply(TraversableOnce.scala:194) at scala.collection.immutable.Range.foreach(Range.scala:158) at scala.collection.TraversableOnce.foldLeft(TraversableOnce.scala:199) at scala.collection.TraversableOnce.foldLeft$(TraversableOnce.scala:192) at scala.collection.AbstractTraversable.foldLeft(Traversable.scala:108) at org.apache.flink.table.planner.plan.optimize.program.FlinkGroupProgram.optimize(FlinkGroupProgram.scala:55) at org.apache.flink.table.planner.plan.optimize.program.FlinkChainedProgram.$anonfun$optimize$1(FlinkChainedProgram.scala:62) at scala.collection.TraversableOnce$folder$1.apply(TraversableOnce.scala:196) at scala.collection.TraversableOnce$folder$1.apply(TraversableOnce.scala:194) at scala.collection.Iterator.foreach(Iterator.scala:943) at scala.collection.Iterator.foreach$(Iterator.scala:943) at scala.collection.AbstractIterator.foreach(Iterator.scala:1431) at scala.collection.IterableLike.foreach(IterableLike.scala:74) at scala.collection.IterableLike.foreach$(IterableLike.scala:73) at scala.collection.AbstractIterable.foreach(Iterable.scala:56) at scala.collection.TraversableOnce.foldLeft(TraversableOnce.scala:199) at scala.collection.TraversableOnce.foldLeft$(TraversableOnce.scala:192) at scala.collection.AbstractTraversable.foldLeft(Traversable.scala:108) at org.apache.flink.table.planner.plan.optimize.program.FlinkChainedProgram.optimize(FlinkChainedProgram.scala:58) at org.apache.flink.table.planner.plan.optimize.StreamCommonSubGraphBasedOptimizer.optimizeTree(StreamCommonSubGraphBasedOptimizer.scala:163) at org.apache.flink.table.planner.plan.optimize.StreamCommonSubGraphBasedOptimizer.doOptimize(StreamCommonSubGraphBasedOptimizer.scala:83) at org.apache.flink.table.planner.plan.optimize.CommonSubGraphBasedOptimizer.optimize(CommonSubGraphBasedOptimizer.scala:77) at org.apache.flink.table.planner.delegation.PlannerBase.optimize(PlannerBase.scala:287) at org.apache.flink.table.planner.delegation.PlannerBase.translate(PlannerBase.scala:160) at org.apache.flink.table.api.internal.TableEnvironmentImpl.translate(TableEnvironmentImpl.java:1329) at org.apache.flink.table.api.internal.TableEnvironmentImpl.executeInternal(TableEnvironmentImpl.java:707) at org.apache.flink.table.api.internal.TableImpl.execute(TableImpl.java:577)