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https://issues.apache.org/jira/browse/FLINK-31755?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17713864#comment-17713864
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Aitozi commented on FLINK-31755:
--------------------------------
CC [~lincoln.86xy] [~snuyanzin]
> ROW function can not work with RewriteIntersectAllRule
> ------------------------------------------------------
>
> Key: FLINK-31755
> URL: https://issues.apache.org/jira/browse/FLINK-31755
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / Planner
> Reporter: Aitozi
> Priority: Major
> Labels: pull-request-available
>
> Reproduce case:
> {code:java}
> create table row_sink (
> `b` ROW<b1 STRING, b2 INT>
> ) with (
> 'connector' = 'values'
> )
> util.verifyRelPlanInsert(
> "INSERT INTO row_sink " +
> "SELECT ROW(a, b) FROM complex_type_src intersect all " +
> "SELECT ROW(c, d) FROM complex_type_src ")
> {code}
> It will fails with
> {code:java}
> Caused by: java.lang.IllegalArgumentException: Type mismatch:
> rel rowtype: RecordType(RecordType:peek_no_expand(VARCHAR(2147483647)
> CHARACTER SET "UTF-16LE" EXPR$0, INTEGER EXPR$1) NOT NULL EXPR$0) NOT NULL
> equiv rowtype: RecordType(RecordType(VARCHAR(2147483647) CHARACTER SET
> "UTF-16LE" EXPR$0, INTEGER EXPR$1) NOT NULL EXPR$0) NOT NULL
> Difference:
> EXPR$0: RecordType:peek_no_expand(VARCHAR(2147483647) CHARACTER SET
> "UTF-16LE" EXPR$0, INTEGER EXPR$1) NOT NULL -> RecordType(VARCHAR(2147483647)
> CHARACTER SET "UTF-16LE" EXPR$0, INTEGER EXPR$1) NOT NULL
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.register(VolcanoPlanner.java:592)
> at
> org.apache.calcite.plan.volcano.VolcanoPlanner.ensureRegistered(VolcanoPlanner.java:613)
> at
> org.apache.calcite.plan.volcano.VolcanoRuleCall.transformTo(VolcanoRuleCall.java:144)
> ... 68 more
> {code}
> The reason is:
> ROW function will generates the {{FULLY_QUALIFIED}} type. But after the
> {{RewriteIntersectAllRule}} optimization, it will produce the
> {{PEEK_FIELDS_NO_EXPAND}}. So the volcano planner complains with type
> mismatch.
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