如何在 MySQL 中显示部分列(不是全部)?
mysqlmysqli database
为了显示部分列，请使用 NOT IN 并设置您不想显示的列。让我们首先创建一个表。以下是查询 −
mysql> create table student_Information -> ( -> StudentId int NOT NULL AUTO_INCREMENT PRIMARY KEY, -> StudentName varchar(50), -> StudentAge int, -> StudentAddress varchar(100), -> StudentAllSubjectScore int -> ); Query OK, 0 rows affected (0.69 sec)
以下查询显示有关上表的描述 −
mysql> desc student_Information;
这将产生以下输出 −
+------------------------+--------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +------------------------+--------------+------+-----+---------+----------------+ | StudentId | int(11) | NO | PRI | NULL | auto_increment | | StudentName | varchar(50) | YES | | NULL | | | StudentAge | int(11) | YES | | NULL | | | StudentAddress | varchar(100) | YES | | NULL | | | StudentAllSubjectScore | int(11) | YES | | NULL | | +------------------------+--------------+------+-----+---------+----------------+ 5 rows in set (0.00 sec)
以下是仅显示某些列的查询 −
mysql> SHOW COLUMNS FROM student_Information where field not
in('StudentAddress','StudentAllSubjectScore');
这将产生以下输出 −
+-------------+-------------+------+-----+---------+----------------+ | Field | Type | Null | Key | Default | Extra | +-------------+-------------+------+-----+---------+----------------+ | StudentId | int(11) | NO | PRI | NULL | auto_increment | | StudentName | varchar(50) | YES | | NULL | | | StudentAge | int(11) | YES | | NULL | | +-------------+-------------+------+-----+---------+----------------+ 3 rows in set (0.00 sec)
