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https://issues.apache.org/jira/browse/CALCITE-5053?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17511333#comment-17511333
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Xurenhe commented on CALCITE-5053:
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*SHOW DATABASES* may be MySQL's behavior, which is executed for showing the
list of databases.
PG and Oracle don't support this SQL Statement.
> Implement “show catalogs/databases/schemas" semantics
> -------------------------------------------------------
>
> Key: CALCITE-5053
> URL: https://issues.apache.org/jira/browse/CALCITE-5053
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Affects Versions: 1.29.0
> Reporter: itxiangkui
> Priority: Major
>
> our data warehouse has integrate es/mysql/druid and so on ,also the dba
> manage the database difficultly。
> the default sql has implement the "DESCRIBE CATALOG/SCHEMA" and so on
> but most of dba may prefer a simple sql grammar like "show databases" ...
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