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Will Yu commented on CALCITE-2900: ---------------------------------- [~zabetak] PR is ready. Could you help take a look when available? Thanks! > RewriteRexShuttle generates wrong type during flatten for structured type > when visitInputRef > -------------------------------------------------------------------------------------------- > > Key: CALCITE-2900 > URL: https://issues.apache.org/jira/browse/CALCITE-2900 > Project: Calcite > Issue Type: Bug > Components: core > Affects Versions: 1.18.0 > Reporter: Will Yu > Priority: Blocker > Labels: pull-request-available > Time Spent: 20m > Remaining Estimate: 0h > > When we leverage Calcite to parse a SQL and generates a RelNode tree on top > of a table with *structured* columns, Calcite throws an error about type > mismatch shown at bottom. > After a bit of debugging, the issue is suspected to happen in > RewriteRexShuttle.visitFieldAccess. When the input is RexInputRef, such as > $36.target_column, the newField type is calculated based on ONLY the index > 36, WITHOUT considering the offset of target_column. The result is new field > type is the type of the first sub-column of column $36, which causes the type > mismatch. > > Error and stacktrace: > java.lang.AssertionError: type mismatch: > ref: > INTEGER NOT NULL > input: > VARCHAR CHARACTER SET "ISO-8859-1" COLLATE "ISO-8859-1$en_US$primary" NOT NULL > at org.apache.calcite.util.Litmus$1.fail(Litmus.java:31) > at org.apache.calcite.plan.RelOptUtil.eq(RelOptUtil.java:1832) > at org.apache.calcite.rex.RexChecker.visitInputRef(RexChecker.java:125) > at org.apache.calcite.rex.RexChecker.visitInputRef(RexChecker.java:57) > at org.apache.calcite.rex.RexInputRef.accept(RexInputRef.java:112) > at org.apache.calcite.rel.core.Project.isValid(Project.java:186) > at org.apache.calcite.rel.core.Project.<init>(Project.java:83) > at > org.apache.calcite.rel.logical.LogicalProject.<init>(LogicalProject.java:62) > at > org.apache.calcite.rel.logical.LogicalProject.create(LogicalProject.java:112) > at > org.apache.calcite.rel.logical.LogicalProject.create(LogicalProject.java:100) > at > org.apache.calcite.rel.core.RelFactories$ProjectFactoryImpl.createProject(RelFactories.java:140) > at org.apache.calcite.tools.RelBuilder.project(RelBuilder.java:1248) > at org.apache.calcite.tools.RelBuilder.projectNamed(RelBuilder.java:1304) > at > org.apache.calcite.sql2rel.RelStructuredTypeFlattener.rewriteRel(RelStructuredTypeFlattener.java:506) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.apache.calcite.util.ReflectUtil.invokeVisitorInternal(ReflectUtil.java:257) > at org.apache.calcite.util.ReflectUtil.invokeVisitor(ReflectUtil.java:214) > at org.apache.calcite.util.ReflectUtil$1.invokeVisitor(ReflectUtil.java:464) > at > org.apache.calcite.sql2rel.RelStructuredTypeFlattener$RewriteRelVisitor.visit(RelStructuredTypeFlattener.java:759) > at org.apache.calcite.rel.SingleRel.childrenAccept(SingleRel.java:72) > at org.apache.calcite.rel.RelVisitor.visit(RelVisitor.java:44) > at > org.apache.calcite.sql2rel.RelStructuredTypeFlattener$RewriteRelVisitor.visit(RelStructuredTypeFlattener.java:754) > at > org.apache.calcite.sql2rel.RelStructuredTypeFlattener.rewrite(RelStructuredTypeFlattener.java:194) > at > org.apache.calcite.sql2rel.SqlToRelConverter.flattenTypes(SqlToRelConverter.java:466) > at org.apache.calcite.prepare.PlannerImpl.rel(PlannerImpl.java:236) > -- This message was sent by Atlassian JIRA (v7.6.3#76005)