docs-v2/content/shared/influxdb3-query-guides/sql/explore-schema.md

Use SQL to explore your data schema in your {{< product-name >}} database.

List tables in a database

Use SHOW TABLES to list tables in your InfluxDB database.

SHOW TABLES

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Tables listed with the table_schema of iox are tables. Tables with system or information_schema table schemas are system tables that store internal metadata.

table_catalog	table_schema	table_name	table_type
public	iox	home	BASE TABLE
public	iox	noaa	BASE TABLE
public	system	queries	BASE TABLE
public	information_schema	tables	VIEW
public	information_schema	views	VIEW
public	information_schema	columns	VIEW
public	information_schema	df_settings	VIEW

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List columns in a table

Use the SHOW COLUMNS statement to view what columns are in a table. Use the IN clause to specify the table.

SHOW COLUMNS IN home

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table_catalog	table_schema	table_name	column_name	data_type	is_nullable
public	iox	home	co	Int64	YES
public	iox	home	hum	Float64	YES
public	iox	home	room	Dictionary(Int32, Utf8)	YES
public	iox	home	temp	Float64	YES
public	iox	home	time	Timestamp(Nanosecond, None)	NO

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