layout: global title: SHOW COLUMNS displayTitle: SHOW COLUMNS license: | Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements. See the NOTICE file distributed with this work for additional information regarding copyright ownership. The ASF licenses this file to You under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

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Description

Return the list of columns in a table. If the table does not exist, an exception is thrown.

Syntax

{% highlight sql %} SHOW COLUMNS table_identifier [ database ] {% endhighlight %}

Parameters

Examples

{% highlight sql %} -- Create customer table in salesdb database; USE salesdb; CREATE TABLE customer(cust_cd INT, name VARCHAR(100), cust_addr STRING);

-- List the columns of customer table in current database. SHOW COLUMNS IN customer; +---------+ |col_name | +---------+ |cust_cd | |name | |cust_addr| +---------+

-- List the columns of customer table in salesdb database. SHOW COLUMNS IN salesdb.customer; +---------+ |col_name | +---------+ |cust_cd | |name | |cust_addr| +---------+

-- List the columns of customer table in salesdb database SHOW COLUMNS IN customer IN salesdb; +---------+ |col_name | +---------+ |cust_cd | |name | |cust_addr| +---------+ {% endhighlight %}

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