mysql学习记录（二十四）--mysql相关工具(六)
s$ mysqlshow -uroot -p(密码) test t2 --count;
Database: test Table: t2 Rows: 13
+-------+---------+-----------+------+-----+---------+-------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------+---------+-----------+------+-----+---------+-------+---------------------------------+---------+
| id | int(11) | | YES | | | | select,insert,update,references | |
+-------+---------+-----------+------+-----+---------+-------+---------------------------------+---------+
abc@ubuntu:~/Downloads$ mysql -uroot -p(密码);
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 88
Server version: 5.5.44-log Source distribution
Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> use sakila;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
abc@ubuntu:~/Downloads$ mysqlshow -uroot -p(密码) test t2 -k;
Database: test Table: t2
+-------+---------+-----------+------+-----+---------+-------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------+---------+-----------+------+-----+---------+-------+---------------------------------+---------+
| id | int(11) | | YES | | | | select,insert,update,references | |
+-------+---------+-----------+------+-----+---------+-------+------
---------------------------+---------+
Table has no keys
abc@ubuntu:~/Downloads$ mysqlshow -uroot -p(密码) sakila actor -k;
Database: sakila Table: actor
+-------------+----------------------+-----------------+------+-----+-------------------+-----------------------------+---------------------------------+---------+
| Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment |
+-------------+----------------------+-----------------+------+-----+-------------------+-----------------------------+---------------------------------+---------+
| actor_id | smallint(5) unsigned | | NO | PRI | | auto_increment | select,insert,update,references | |
| first_name | varchar(45) | utf8_general_ci | NO | | | | select,insert,update,references | |
| last_name | varchar(45) | utf8_general_ci | NO | MUL | | | select,insert,update,references | |
| last_update | timestamp | | NO | | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP | select,insert,update,references | |
+-------------+----------------------+-----------------+------+-----+-------------------+-----------------------------+---------------------------------+---------+
+-------+------------+---------------------+--------------+-------------+-----------+-------------+----------+--------+------+------------+---------+---------------+
| Table | Non_unique | Key_name | Seq_in_index | Column_name | Collation | Cardinality | Sub_part | Packed | Null | Index_type | Comment | Index_comment |
+-------+------------+---------------------+--------------+-------