Hi, Robin and Hang. This Flip is not finished yet. Although the syntax `DESCRIBE CATALOG xxx` can be parsed successfully, but cannot continue to process it at a later stage.
I have added a jira[1] for it. [1] https://issues.apache.org/jira/browse/FLINK-34254 -- Best！ Xuyang 在 2024-01-29 10:47:18，"Hang Ruan" <ruanhang1...@gmail.com> 写道： Hi, Robin. I see that the `DESCRIBE CATALOG` sql is not list in the DESCRIBE document[1]. It is not available. Besides this, I checked the changes in Catalog.java from commits on May 9, 2019. I cannot find the method `explainCatalog` introduced from this FLIP. This FLIP is not finished yet. Best, Hang [1] https://nightlies.apache.org/flink/flink-docs-release-1.18/docs/dev/table/sql/describe/ Robin Moffatt via user <user@flink.apache.org> 于2024年1月27日周六 01:01写道： In FLIP-69 [1] it looks like DESCRIBE CATALOG was added, but when I try it from SQL Client in 1.18.1 it doesn't seem to work Flink SQL> SHOW CATALOGS; +-----------------+ | catalog name | +-----------------+ | c_new | | default_catalog | +-----------------+ 2 rows in set Flink SQL> DESCRIBE CATALOG default_catalog; [ERROR] Could not execute SQL statement. Reason: org.apache.calcite.sql.validate.SqlValidatorException: Column 'default_catalog' not found in any table Poking around I found the JIRA that implemented it [2] and can see the code present today [3] Any ideas? Thanks, Robin. [1] https://cwiki.apache.org/confluence/display/FLINK/FLIP-69%3A+Flink+SQL+DDL+Enhancement [2] https://issues.apache.org/jira/browse/FLINK-14689 [3] https://github.com/apache/flink/blob/master/flink-table/flink-sql-parser/src/main/java/org/apache/flink/sql/parser/dql/SqlDescribeCatalog.java
