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  1. Teiid
  2. TEIID-5152

"No value was available" error message when evaluating an expression

    Details

    • Type: Bug
    • Status: Resolved (View Workflow)
    • Priority: Blocker
    • Resolution: Done
    • Affects Version/s: 9.3.4
    • Fix Version/s: 9.3.5, 10.1, 10.0.1
    • Component/s: Query Engine
    • Labels:
      None
    • Environment:

      teiid-9.3.4 on WildFly Full 10.0.0.Final (WildFly Core 2.0.10.Final)

    • Steps to Reproduce:
      Hide

      1. In postgresql create the test_nva and test_ table by the following script:

      CREATE TABLE public.test_nva
      (
        id integer,
        type character varying(4000),
        start_date date
      );
      INSERT INTO public.test_nva(id, type, start_date) VALUES (1, 'str_val', '2015-07-02');
      

      2. Add postgresql database configuration in standalone-teiid.xml

      <datasource jndi-name="java:/test_pg" pool-name="test_pg" enabled="true" use-java-context="true">
                          <connection-url>jdbc:postgresql://localhost:5432/test?charSet=utf8</connection-url>
                          <driver-class>org.postgresql.Driver</driver-class>
                          <driver>org.postgresql</driver>
                          <pool>
                              <min-pool-size>2</min-pool-size>
                              <max-pool-size>70</max-pool-size>
                              <prefill>false</prefill>
                              <use-strict-min>false</use-strict-min>
                              <flush-strategy>FailingConnectionOnly</flush-strategy>
                          </pool>
                          <security>
                              <user-name>postgres</user-name>
                              <password>xxxxxx</password>
                          </security>
                          <validation>
                              <check-valid-connection-sql>select 0</check-valid-connection-sql>
                          </validation>
                          <timeout>
                              <blocking-timeout-millis>120000</blocking-timeout-millis>
                              <idle-timeout-minutes>5</idle-timeout-minutes>
                          </timeout>
                      </datasource>
      

      3. Add in test-vdb.xml java:/test_pg configured in previous step as datasource:

      <model name="test_pg">
              <property name="importer.useFullSchemaName" value="false"/>
      	<property name="importer.tableTypes" value="TABLE,VIEW"/>
      	<property name="importer.importKeys" value="false"/>
              <source name="test_pg" translator-name="myPg" connection-jndi-name="java:/test_pg"/>
          </model>
       
      <translator name="myPg" type="postgresql">
              <property name="SupportsNativeQueries" value="true"/>
          </translator>
      

      4. Configure in the test-vdb.xml the following virtual procedure:

      <model visible = "true" type = "VIRTUAL" name = "views">
              <metadata type = "DDL"><![CDATA[
                CREATE VIRTUAL PROCEDURE pr0 (arg0 string) RETURNS (col0 integer, col1 string) AS
      BEGIN
          SELECT 1 as col0, '2017-01-01' AS col1 
      		FROM (select '{"meta":1}' as val) w
      			,XMLTABLE(
      				XMLNAMESPACES ('http://www.w3.org/2001/XMLSchema-instance' as "xsi")
      				,'/root/bounce_rate' PASSING JSONTOXML('root', w.val) 
      				COLUMNS col0 integer
                      		  ,col1 string
                  	) some_alias;
      END
              ]]>
              </metadata>
          </model>
      

      5. Run the following query:

      SELECT *
      	FROM (SELECT 'League' AS type, 1 AS arg0) xxx, "test_pg.test_nva" dl, table(CALL "views.pr0"(arg0)) x
      	JOIN "test_pg.test_nva" d ON d.type = 'str_val' ;;
      

      or

      SELECT *
      	FROM (SELECT 'League' AS type, 1 AS arg0) xxx, "test_pg.test_nva" dl, table(CALL "views.pr0"(arg0)) x
      	JOIN "test_pg.test_nva" d ON x.col1 = d.start_date AND d.type = 'str_val' ;;
      

      Show
      1. In postgresql create the test_nva and test_ table by the following script: CREATE TABLE public .test_nva ( id integer , type character varying (4000), start_date date ); INSERT INTO public .test_nva(id, type, start_date) VALUES (1, 'str_val' , '2015-07-02' ); 2. Add postgresql database configuration in standalone-teiid.xml < datasource jndi-name = "java:/test_pg" pool-name = "test_pg" enabled = "true" use-java-context = "true" > < connection -url>jdbc:postgresql://localhost:5432/test?charSet=utf8</ connection -url> < driver -class>org.postgresql.Driver</ driver -class> < driver >org.postgresql</ driver > < pool > < min -pool-size>2</ min -pool-size> < max -pool-size>70</ max -pool-size> < prefill >false</ prefill > < use -strict-min>false</ use -strict-min> < flush -strategy>FailingConnectionOnly</ flush -strategy> </ pool > < security > < user -name>postgres</ user -name> < password >xxxxxx</ password > </ security > < validation > < check -valid-connection-sql>select 0</ check -valid-connection-sql> </ validation > < timeout > < blocking -timeout-millis>120000</ blocking -timeout-millis> < idle -timeout-minutes>5</ idle -timeout-minutes> </ timeout > </ datasource > 3. Add in test-vdb.xml java:/test_pg configured in previous step as datasource: < model name = "test_pg" > < property name = "importer.useFullSchemaName" value = "false" /> < property name = "importer.tableTypes" value = "TABLE,VIEW" /> < property name = "importer.importKeys" value = "false" /> < source name = "test_pg" translator-name = "myPg" connection-jndi-name = "java:/test_pg" /> </ model >   < translator name = "myPg" type = "postgresql" > < property name = "SupportsNativeQueries" value = "true" /> </ translator > 4. Configure in the test-vdb.xml the following virtual procedure: < model visible = "true" type = "VIRTUAL" name = "views" > < metadata type = "DDL" > <![CDATA[ CREATE VIRTUAL PROCEDURE pr0 (arg0 string) RETURNS (col0 integer, col1 string) AS BEGIN SELECT 1 as col0, '2017-01-01' AS col1 FROM (select '{"meta":1}' as val) w ,XMLTABLE( XMLNAMESPACES ('http://www.w3.org/2001/XMLSchema-instance' as "xsi") ,'/root/bounce_rate' PASSING JSONTOXML('root', w.val) COLUMNS col0 integer ,col1 string ) some_alias; END ]]> </ metadata > </ model > 5. Run the following query: SELECT * FROM ( SELECT 'League' AS type, 1 AS arg0) xxx, "test_pg.test_nva" dl, table (CALL "views.pr0" (arg0)) x JOIN "test_pg.test_nva" d ON d.type = 'str_val' ;; or SELECT * FROM ( SELECT 'League' AS type, 1 AS arg0) xxx, "test_pg.test_nva" dl, table (CALL "views.pr0" (arg0)) x JOIN "test_pg.test_nva" d ON x.col1 = d.start_date AND d.type = 'str_val' ;;

      Description

      1. When running the following query:

      SELECT *
      	FROM (SELECT 'League' AS type, 1 AS arg0) xxx, "test_pg.test_nva" dl, table(CALL "views.pr0"(arg0)) x
      	JOIN "test_pg.test_nva" d ON d.type = 'str_val' ;;
      

      teiid throws out the following error:

      2017-11-16 17:23:24,159 ERROR [org.teiid.PROCESSOR] (Worker4_QueryProcessorQueue8) DopCSsLeK9Oy TEIID30019 Unexpected exception for request DopCSsLeK9Oy.2: org.teiid.core.TeiidCompon
      entException: TEIID30328 Unable to evaluate xxx.arg0: No value was available
              at org.teiid.query.util.CommandContext.getFromContext(CommandContext.java:514)
              at org.teiid.query.eval.Evaluator.internalEvaluate(Evaluator.java:771)
              at org.teiid.query.eval.Evaluator.evaluate(Evaluator.java:1387)
              at org.teiid.query.eval.Evaluator.internalEvaluate(Evaluator.java:761)
              at org.teiid.query.eval.Evaluator.evaluate(Evaluator.java:727)
              at org.teiid.query.processor.proc.ProcedurePlan.evaluateExpression(ProcedurePlan.java:857)
              at org.teiid.query.processor.proc.ProcedurePlan.open(ProcedurePlan.java:225)
              at org.teiid.query.processor.relational.PlanExecutionNode.open(PlanExecutionNode.java:82)
              at org.teiid.query.processor.relational.RelationalNode.open(RelationalNode.java:254)
              at org.teiid.query.processor.relational.RelationalNode.open(RelationalNode.java:254)
              at org.teiid.query.processor.relational.LimitNode.open(LimitNode.java:146)
              at org.teiid.query.processor.relational.JoinStrategy.openLeft(JoinStrategy.java:95)
              at org.teiid.query.processor.relational.NestedTableJoinStrategy.openLeft(NestedTableJoinStrategy.java:74)
              at org.teiid.query.processor.relational.JoinNode.open(JoinNode.java:145)
              at org.teiid.query.processor.relational.RelationalNode.open(RelationalNode.java:254)
              at org.teiid.query.processor.relational.LimitNode.open(LimitNode.java:146)
              at org.teiid.query.processor.relational.JoinStrategy.openRight(JoinStrategy.java:105)
              at org.teiid.query.processor.relational.JoinNode.open(JoinNode.java:149)
              at org.teiid.query.processor.relational.RelationalNode.open(RelationalNode.java:254)
              at org.teiid.query.processor.relational.LimitNode.open(LimitNode.java:146)
              at org.teiid.query.processor.relational.RelationalNode.open(RelationalNode.java:254)
              at org.teiid.query.processor.relational.RelationalPlan.open(RelationalPlan.java:136)
              at org.teiid.query.processor.QueryProcessor.init(QueryProcessor.java:232)
              at org.teiid.query.processor.QueryProcessor.nextBatchDirect(QueryProcessor.java:139)
              at org.teiid.query.processor.QueryProcessor.nextBatch(QueryProcessor.java:115)
              at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:164)
              at org.teiid.query.processor.BatchCollector.collectTuples(BatchCollector.java:146)
              at org.teiid.dqp.internal.process.RequestWorkItem.processMore(RequestWorkItem.java:479)
              at org.teiid.dqp.internal.process.RequestWorkItem.process(RequestWorkItem.java:349)
              at org.teiid.dqp.internal.process.AbstractWorkItem.run(AbstractWorkItem.java:51)
              at org.teiid.dqp.internal.process.RequestWorkItem.run(RequestWorkItem.java:275)
              at org.teiid.dqp.internal.process.DQPWorkContext.runInContext(DQPWorkContext.java:284)
              at org.teiid.dqp.internal.process.ThreadReuseExecutor$RunnableWrapper.run(ThreadReuseExecutor.java:119)
              at org.teiid.dqp.internal.process.ThreadReuseExecutor$3.run(ThreadReuseExecutor.java:210)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
              at java.lang.Thread.run(Thread.java:745)
      

      2. When running the following query:

      SELECT *
      	FROM (SELECT 'League' AS type, 1 AS arg0) xxx, "test_pg.test_nva" dl, table(CALL "views.pr0"(arg0)) x
      	JOIN "test_pg.test_nva" d ON x.col1 = d.start_date AND d.type = 'str_val' ;;
      

      teiid complains showing the following error message:

      2017-11-16 17:37:59,372 WARN  [org.teiid.PROCESSOR] (Worker8_QueryProcessorQueue23) DopCSsLeK9Oy TEIID30020 Processing exception for request DopCSsLeK9Oy.9 'TEIID31172 Could not reso
      lve expressions being compared to a common type excluding character conversions: x.col1 = d.start_date'. Originally QueryResolverException ResolverVisitor.java:1045. Enable more deta
      iled logging to see the entire stacktrace.
      

      It seems that in the x.col1 = d.start_date comparison the d.start_date must be converted to string explicitly but I don't know if it's a bug or not, if we indeed must use the conversion here explicitly.

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              • Assignee:
                shawkins Steven Hawkins
                Reporter:
                dalex005 dalex dalex
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                Dates

                • Created:
                  Updated:
                  Resolved: