描述表
编辑描述表
编辑概要
描述: DESC
和 DESCRIBE
是 SHOW COLUMNS 的别名。
DESCRIBE emp; column | type | mapping --------------------+---------------+--------------- birth_date |TIMESTAMP |datetime dep |STRUCT |nested dep.dep_id |VARCHAR |keyword dep.dep_name |VARCHAR |text dep.dep_name.keyword|VARCHAR |keyword dep.from_date |TIMESTAMP |datetime dep.to_date |TIMESTAMP |datetime emp_no |INTEGER |integer first_name |VARCHAR |text first_name.keyword |VARCHAR |keyword gender |VARCHAR |keyword hire_date |TIMESTAMP |datetime languages |TINYINT |byte last_name |VARCHAR |text last_name.keyword |VARCHAR |keyword name |VARCHAR |keyword salary |INTEGER |integer