[teiid-issues] [JBoss JIRA] (TEIID-5220) Add support for information_schema namespace

[Salvatore R. (Jira)]

    [ https://issues.jboss.org/browse/TEIID-5220?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13772285#comment-13772285 ] 

Salvatore R. commented on TEIID-5220:
-------------------------------------

[~shawkins] I have another question about the current implementation, please.
Accordingly to the PostgreSQL docs mentioned in the description, VIEWS and TABLES should return respectively:

- TABLES: all tables and views
- VIEWS: only views

but it seems that the current implementation in Teiid returns both tables and views for information_schema.TABLES but only tables (and not views) in information_schema.VIEWS. Looking at the code, the view transformation is indeed defined as:
{code:sql}select vdbname, schemaName, name, 'NONE', case when SupportsUpdates then 'YES' else 'NO' end from sys.tables where IsPhysical{code}.

Is there any reason why it is implemented or is it maybe a bug? :)

> Add support for information_schema namespace
> --------------------------------------------
>
>                 Key: TEIID-5220
>                 URL: https://issues.jboss.org/browse/TEIID-5220
>             Project: Teiid
>          Issue Type: Bug
>          Components: ODBC, Query Engine
>            Reporter: Divyesh Vallabh
>            Assignee: Steven Hawkins
>            Priority: Major
>             Fix For: 10.3, 10.2.1
>
>
> The npgsql provider uses the the infomation_schema namespace to query meta information for tables and views.
> Add support for information_schema.tables (
> https://www.postgresql.org/docs/10/static/infoschema-tables.html) to teiid
> Add support for information_schema.views (
> https://www.postgresql.org/docs/10/static/infoschema-views.html) to teiid
> Add support for information_schema.columns (
> https://www.postgresql.org/docs/10/static/infoschema-columns.html) to teiid



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