# Metadata queries

**URL:** <https://community.dremio.com/t/metadata-queries/4638>\
**Category:** Uncategorized\
**Created:** [November 25, 2019, 12:20pm UTC](https://community.dremio.com/t/metadata-queries/4638 "2019-11-25T12:20:14Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![balaji.ramaswamy](https://sea2.discourse-cdn.com/flex020/user_avatar/community.dremio.com/balaji.ramaswamy/32/843_2.png) [@balaji.ramaswamy](https://community.dremio.com/u/balaji.ramaswamy)\
**Post date:** [September 8, 2020, 6:14am UTC](https://community.dremio.com/t/metadata-queries/4638/17 "2020-09-08T06:14:26Z")

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@dolphinlei

I have answered your other post on the same question

> [@For metedata table INFORMATION\_SCHEMA.COLUMNS](https://community.dremio.com/t/for-metedata-table-information-schema-columns/6220/8):
>
> @dolphinlei @fetanchaud For non file system sources, the default is one hour where we look for new tables, open the source settings on Dremio and click on the metadata tab and then see “Dataset Discovery” For new columns added, look just below for “Dataset Details” Here is the full documentation on this [http://docs.dremio.com/advanced-administration/metadata-caching.html](http://docs.dremio.com/advanced-administration/metadata-caching.html) Once we discover a table via the light probe “Data set discovery” we would add it to information\_schema, this does not me…

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