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https://issues.apache.org/jira/browse/FLINK-16320?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Timo Walther updated FLINK-16320:
---------------------------------
Component/s: (was: Table SQL / Legacy Planner)
> Can not use sub-queries in the VALUES clause
> ---------------------------------------------
>
> Key: FLINK-16320
> URL: https://issues.apache.org/jira/browse/FLINK-16320
> Project: Flink
> Issue Type: Improvement
> Components: Table SQL / Planner
> Affects Versions: 1.11.0
> Reporter: Dawid Wysakowicz
> Priority: Minor
> Labels: auto-deprioritized-major
>
> {code}
> StreamExecutionEnvironment sEnv =
> StreamExecutionEnvironment.getExecutionEnvironment();
> StreamTableEnvironment tableEnvironment = StreamTableEnvironment.create(
> sEnv,
> EnvironmentSettings.newInstance().useBlinkPlanner().build());
> Table table = tableEnvironment.sqlQuery("SELECT * FROM (VALUES(1), (SELECT
> 1))");
> tableEnvironment.toRetractStream(table, Row.class).print();
> System.out.println(tableEnvironment.explain(table));
> {code}
> Produces:
> {code}
> == Optimized Logical Plan ==
> Union(all=[true], union=[EXPR$0])
> :- Calc(select=[CAST(1) AS EXPR$0])
> : +- Values(type=[RecordType(INTEGER ZERO)], tuples=[[{ 0 }]])
> +- Calc(select=[$f0 AS EXPR$0])
> +- Join(joinType=[LeftOuterJoin], where=[true], select=[ZERO, $f0],
> leftInputSpec=[NoUniqueKey], rightInputSpec=[JoinKeyContainsUniqueKey])
> :- Exchange(distribution=[single])
> : +- Values(type=[RecordType(INTEGER ZERO)], tuples=[[{ 0 }]],
> reuse_id=[1])
> +- Exchange(distribution=[single])
> +- GroupAggregate(select=[SINGLE_VALUE(EXPR$0) AS $f0])
> +- Exchange(distribution=[single])
> +- Calc(select=[1 AS EXPR$0])
> +- Reused(reference_id=[1])
> {code}
> which is wrong.
> Legacy planner fails with:
> {code}
> validated type:
> RecordType(INTEGER EXPR$0) NOT NULL
> converted type:
> RecordType(INTEGER NOT NULL EXPR$0) NOT NULL
> rel:
> LogicalProject(EXPR$0=[$0])
> LogicalUnion(all=[true])
> LogicalProject(EXPR$0=[1])
> LogicalValues(tuples=[[{ 0 }]])
> LogicalAggregate(group=[{}], agg#0=[SINGLE_VALUE($0)])
> LogicalProject(EXPR$0=[1])
> LogicalValues(tuples=[[{ 0 }]])
> {code}
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