docs-v2/content/influxdb3/cloud-serverless/query-data/sql/explore-schema.md

title	description	menu	weight	influxdb3/cloud-serverless/tags	list_code_example
Explore your schema with SQL	When working with InfluxDB's implementation of SQL, a **bucket** is equivalent to a database, a **measurement** is structured as a table, and **time**, **fields**, and **tags** are structured as columns.	influxdb3_cloud_serverless name parent identifier Explore your schema Query with SQL query-sql-schema	201	query sql	##### List measurements ```sql SHOW TABLES ``` ##### List columns in a measurement ```sql SHOW COLUMNS IN measurement ```

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List measurements in a bucket

Use SHOW TABLES to list measurements in your InfluxDB bucket.

SHOW TABLES

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Tables listed with the table_schema of iox are measurements. 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 measurement

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

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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