SHOW COLUMNS
Description
Return the list of columns in a table. If the table does not exist, an exception is thrown.
Syntax
SHOW COLUMNS table [ database ]Parameters
table-
Specifies the table name of an existing table. The table may be optionally qualified
with a database name.
Syntax:{ IN | FROM } [database_name.]table_name
Note: KeywordsINandFROMare interchangeable. database-
Specifies an optional database name. The table is resolved from this database when it
is specified. Please note that when this parameter is specified then table
name should not be qualified with a different database name.
Syntax:{ IN | FROM } database_name
Note: KeywordsINandFROMare interchangeable.
Examples
-- 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|
+---------+