[jira] [Reopened] (FLINK-14666) support multiple catalog in flink table sql

["Kurt Young (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-14666?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kurt Young reopened FLINK-14666:
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> support multiple catalog in flink table sql
> -------------------------------------------
>
>                 Key: FLINK-14666
>                 URL: https://issues.apache.org/jira/browse/FLINK-14666
>             Project: Flink
>          Issue Type: Bug
>          Components: Table SQL / Planner
>    Affects Versions: 1.8.0, 1.8.2, 1.9.0, 1.9.1
>            Reporter: yuemeng
>            Priority: Critical
>              Labels: pull-request-available
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> currently, calcite will only use the current catalog as schema path to validate sql node,
> maybe this is not reasonable
> {code}
> tableEnvironment.useCatalog("user_catalog");
> tableEnvironment.useDatabase("user_db");
>  Table table = tableEnvironment.sqlQuery("SELECT action, os,count(*) as cnt from music_queue_3 group by action, os,tumble(proctime, INTERVAL '10' SECOND)"); tableEnvironment.registerTable("v1", table);
> Table t2 = tableEnvironment.sqlQuery("select action, os, 1 as cnt from v1");
> tableEnvironment.registerTable("v2", t2);
> tableEnvironment.sqlUpdate("INSERT INTO database2.kafka_table_test1 SELECT action, os,cast (cnt as BIGINT) as cnt from v2");
> {code}
> suppose source table music_queue_3  and sink table kafka_table_test1 both in user_catalog
>  catalog 
>  but some temp table or view such as v1, v2,v3 will register in default catalog.
> when we select temp table v2 and insert it into our own catalog table database2.kafka_table_test1 
> it always failed with sql node validate, because of schema path in
> catalog reader is the current catalog without default catalog,the temp table or view will never be Identified



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