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https://issues.apache.org/jira/browse/CALCITE-6176?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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SimonAlexs updated CALCITE-6176:
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Summary: 'not exists' in 'join on' has a wrong result with
CoreRules.JOIN_SUB_QUERY_TO_CORRELATE (was: 'not exists' in 'join on' has a
wrong result)
> 'not exists' in 'join on' has a wrong result with
> CoreRules.JOIN_SUB_QUERY_TO_CORRELATE
> ---------------------------------------------------------------------------------------
>
> Key: CALCITE-6176
> URL: https://issues.apache.org/jira/browse/CALCITE-6176
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.36.0
> Reporter: SimonAlexs
> Priority: Major
>
> {code:java}
> select *
> from (select 1 id from dual) t1
> left join (select 2 id from dual) t2
> on not exists(select *
> from (select 3 a fromdual) p
> where p.a=t2.id) {code}
> The result of the sql in mysql is:
> {code:java}
> id id
> 1 2 {code}
> But in calcite(I test with 1.36.0), using flowing rules:
> CoreRules.JOIN_SUB_QUERY_TO_CORRELATE
> CoreRules.JOIN_CONDITION_PUSH
> the rel is:
> {code:java}
> LogicalProject(id=[$0], id0=[$1])
> LogicalProject(id=[$0], id0=[$1])
> LogicalJoin(condition=[true], joinType=[left])
> LogicalValues(tuples=[[{ 1 }]])
> LogicalValues(tuples=[[]]) {code}
> It's result is:
> {code:java}
> id id0
> 1 null {code}
> Is this a bug?
>
>
> My whole code is:
> {code:java}
>
> Properties properties = new Properties();
> properties.put(CalciteConnectionProperty.MODEL.camelName(), "inline:");
> Connection calciteConnection = DriverManager.getConnection("jdbc:calcite:",
> properties);
> Statement calciteStatement = calciteConnection.createStatement();
> CalcitePrepare.Context prepareContext =
> calciteStatement.unwrap(CalciteServerStatement.class).createPrepareContext();
> CalciteSchema pSpaceSchema =
> prepareContext.getRootSchema().getSubSchema("ps", false);
> final FrameworkConfig config = Frameworks.newConfigBuilder()
> .parserConfig(SqlParser.config()
> .withLex(Lex.MYSQL)
> .withConformance(SqlConformanceEnum.MYSQL_5))
>
> .sqlValidatorConfig(SqlValidator.Config.DEFAULT)
> .defaultSchema(pSpaceSchema.plus())
> .build();
> Planner planner = Frameworks.getPlanner(config);
> SqlNode parsedSql = planner.parse(sql);
> SqlNode validatedSql = planner.validate(parsedSql);
> RelRoot relRoot = planner.rel(validatedSql);
> RelNode originRel = relRoot.rel;
> HepProgram program = HepProgram.builder()
> .addRuleCollection(Arrays.asList(
> CoreRules.JOIN_SUB_QUERY_TO_CORRELATE
> , CoreRules.JOIN_CONDITION_PUSH
> ))
> .build();
> HepPlanner hepPlanner = new HepPlanner(program);
> hepPlanner.setRoot(originRel);
> RelNode optimizedRel = hepPlanner.findBestExp(); {code}
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