MySql操作记录

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mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| 血糖test           |

| myschool           |

| mysql              |

| performance_schema |

| test               |

| tpl                |

+--------------------+

7 rows in set (0.28 sec)

mysql> select 血糖test;

ERROR 1054 (42S22): Unknown column ‘血糖test‘ in ‘field list‘

mysql> use 血糖test;

Database changed

mysql> show tables;

+--------------------+

| Tables_in_血糖test |

+--------------------+

| 血糖数据类别       |

| 血糖记录           |

| user1              |

| zfjtest            |

+--------------------+

4 rows in set (0.06 sec)

mysql> select * from user1;

Empty set (0.25 sec)

mysql> insert into user1 values();

ERROR 1364 (HY000): Field ‘userid‘ doesn‘t have a default value

mysql> describe user1;

+--------+--------------+------+-----+---------+-------+

| Field  | Type         | Null | Key | Default | Extra |

+--------+--------------+------+-----+---------+-------+

| userid | varchar(255) | NO   | PRI | NULL    |       |

| name   | varchar(255) | YES  |     | NULL    |       |

| gender | varchar(255) | NO   |     | NULL    |       |

| age    | varchar(255) | NO   |     | NULL    |       |

| ming   | varchar(50)  | YES  |     | NULL    |       |

+--------+--------------+------+-----+---------+-------+

5 rows in set (0.22 sec)

mysql>  insert into user1 values(‘01‘,‘zhang‘,‘1‘,25,‘‘);

Query OK, 1 row affected (0.16 sec)

mysql>  insert into user1 values(‘02‘,‘wang‘,‘1‘,25,0987);

Query OK, 1 row affected (0.06 sec)

mysql> select * from 血糖记录;

Empty set (0.12 sec)

mysql> describe 血糖记录;

+----------+--------------+------+-----+---------+----------------+

| Field    | Type         | Null | Key | Default | Extra          |

+----------+--------------+------+-----+---------+----------------+

| 数值     | float(255,1) | NO   |     | NULL    |                |

| 时间     | datetime     | NO   |     | NULL    |                |

| 类别     | int(255)     | NO   |     | NULL    |                |

| 用户编号 | varchar(255) | NO   | MUL | NULL    |                |

| 记录编号 | int(255)     | NO   | PRI | NULL    | auto_increment |

| xb       | enum(‘?‘)    | YES  |     | NULL    |                |

+----------+--------------+------+-----+---------+----------------+

6 rows in set (0.04 sec)

mysql> insert into 血糖记录 values(4.1,‘2019-10-24‘,1,‘02‘,0001,1);

Query OK, 1 row affected (0.11 sec)

mysql>  insert into 血糖记录 values(4.2,‘2019-10-25‘,1,‘02‘,0002,1);

Query OK, 1 row affected (0.04 sec)

mysql>  insert into 血糖记录 values(4.3,‘2019-10-26‘,1,‘02‘,0003,1);

Query OK, 1 row affected (0.05 sec)

mysql> select * from 血糖记录;

+------+---------------------+------+----------+----------+------+

| 数值 | 时间                | 类别 | 用户编号 | 记录编号 | xb   |

+------+---------------------+------+----------+----------+------+

|  4.1 | 2019-10-24 00:00:00 |    1 | 02       |        1 | ?    |

|  4.2 | 2019-10-25 00:00:00 |    1 | 02       |        2 | ?    |

|  4.3 | 2019-10-26 00:00:00 |    1 | 02       |        3 | ?    |

+------+---------------------+------+----------+----------+------+

3 rows in set (0.03 sec)

mysql> select 数值,时间 from 血糖记录;

+------+---------------------+

| 数值 | 时间                |

+------+---------------------+

|  4.1 | 2019-10-24 00:00:00 |

|  4.2 | 2019-10-25 00:00:00 |

|  4.3 | 2019-10-26 00:00:00 |

+------+---------------------+

3 rows in set (0.01 sec)

mysql> show databases;

+--------------------+

| Database           |

+--------------------+

| information_schema |

| ??test             |

| 血糖test           |

| myschool           |

| mysql              |

| performance_schema |

| test               |

| tpl                |

+--------------------+

8 rows in set (0.04 sec)

mysql> use tpl;

Database changed

mysql> show tables;

+---------------+

| Tables_in_tpl |

+---------------+

| 很好          |

| runoob_tbl    |

| zfjtest       |

+---------------+

3 rows in set (0.01 sec)

mysql> describe zfjtest;

+------------+-----------------+------+-----+---------+-------+

| Field      | Type            | Null | Key | Default | Extra |

+------------+-----------------+------+-----+---------+-------+

| 字符集test | varchar(255)    | YES  |     | NULL    |       |

| xingb      | enum(‘女‘,‘男‘) | YES  |     | 女      |       |

+------------+-----------------+------+-----+---------+-------+

2 rows in set (0.29 sec)

mysql> CREATE DATABASE xtjl;

Query OK, 1 row affected (0.00 sec)

mysql> use xtjl;

Database changed

mysql> CREATE TABLE xtjlh (number float(255,1), jltime datetime,jlid varchar(255) primary key);

Query OK, 0 rows affected (0.34 sec)

mysql> insert into xtjlh values(4.1,‘2019-09-12‘,‘0001‘);

Query OK, 1 row affected (0.07 sec)

mysql> select *from xtjlh;

+--------+---------------------+------+

| number | jltime              | jlid |

+--------+---------------------+------+

|    4.1 | 2019-09-12 00:00:00 | 0001 |

+--------+---------------------+------+

1 row in set (0.00 sec)

mysql> insert into xtjlh values(4.2,‘2019-09-13‘,‘0002‘);

Query OK, 1 row affected (0.09 sec)

mysql> insert into xtjlh values(4.3,‘2019-09-14‘,‘0003‘);

Query OK, 1 row affected (0.06 sec)

mysql> insert into xtjlh values(4.5,‘2019-09-15‘,‘0004‘);

Query OK, 1 row affected (0.06 sec)

mysql> USE XTJL;

Database changed

mysql> create database bysj CHARACTER SET utf8 COLLATE utf8_general_ci;use bysj;

CREATE TABLE tb_Client(CId int auto_increment NOT NULL ,CLoginname VARCHAR(255) COLLATE Chinese_PRC_CI_AS NOT NULL,CPwd VARCHAR(255) NOT NULL,CRealname VARCHAR(255) COLLATE Chinese_PRC_CI_AS NOT NULL,CEmail VARCHAR(255),CTel VARCHAR(255),PRIMARY KEY( CId))ENGINE=InnoDB DEFAULT CHARSET=utf8;

Query OK, 1 row affected (0.06 sec)

Database changed

mysql> CREATE TABLE tb_Client(CId int auto_increment NOT NULL ,CLoginname VARCHAR(255) NOT NULL,CPwd VARCHAR(255) NOT NULL,CRealname VARCHAR(255) NOT NULL,CEmail VARCHAR(255),CTel VARCHAR(255),PRIMARY KEY( CId))ENGINE=InnoDB DEFAULT CHARSET=utf8;

Query OK, 0 rows affected (0.20 sec)

mysql> describe tb_Client

    -> ;

+------------+--------------+------+-----+---------+----------------+

| Field      | Type         | Null | Key | Default | Extra          |

+------------+--------------+------+-----+---------+----------------+

| CId        | int(11)      | NO   | PRI | NULL    | auto_increment |

| CLoginname | varchar(255) | NO   |     | NULL    |                |

| CPwd       | varchar(255) | NO   |     | NULL    |                |

| CRealname  | varchar(255) | NO   |     | NULL    |                |

| CEmail     | varchar(255) | YES  |     | NULL    |                |

| CTel       | varchar(255) | YES  |     | NULL    |                |

+------------+--------------+------+-----+---------+----------------+

6 rows in set (0.03 sec)

mysql> select * from tb_Client;

Empty set (0.00 sec)

mysql> select * from tb_Client;

+-----+------------+------+-----------+--------+------+

| CId | CLoginname | CPwd | CRealname | CEmail | CTel |

+-----+------------+------+-----------+--------+------+

|   1 | zhang      | 0987 | ???       | Cemail | Ctel |

+-----+------------+------+-----------+--------+------+

1 row in set (0.00 sec)

mysql> select * from tb_Client;

+-----+------------+------+-----------+--------+------+

| CId | CLoginname | CPwd | CRealname | CEmail | CTel |

+-----+------------+------+-----------+--------+------+

|   1 | zhang      | 0987 | ???       | Cemail | Ctel |

|   2 | zhangmy    | 0987 | ??        | 0987   | 189  |

+-----+------------+------+-----------+--------+------+

2 rows in set (0.00 sec)

mysql> Select count(*) From tb_Client where CLoginname=‘zhang‘  and CPwd=0987;

+----------+

| count(*) |

+----------+

|        1 |

+----------+

1 row in set (0.07 sec)

mysql> Select count(*) From tb_Client where CLoginname=‘zhang3‘  and CPwd=0987;

+----------+

| count(*) |

+----------+

|        1 |

+----------+

1 row in set (0.08 sec)

mysql> Select * From tb_Client where CLoginname=‘zhang3‘  and CPwd=0987;

+-----+------------+------+-----------+--------+------+

| CId | CLoginname | CPwd | CRealname | CEmail | CTel |

+-----+------------+------+-----------+--------+------+

|   3 | zhang3     | 0987 | ???       | Cemail | Ctel |

+-----+------------+------+-----------+--------+------+

1 row in set (0.00 sec)

mysql> use tpl;

Database changed

mysql> describe zfjtest;

+------------+-----------------+------+-----+---------+-------+

| Field      | Type            | Null | Key | Default | Extra |

+------------+-----------------+------+-----+---------+-------+

| 字符集test | varchar(255)    | YES  |     | NULL    |       |

| xingb      | enum(‘女‘,‘男‘) | YES  |     | 女      |       |

+------------+-----------------+------+-----+---------+-------+

2 rows in set (0.17 sec)

mysql> Select * From zfjtest;

+------------+-------+

| 字符集test | xingb |

+------------+-------+

| 张1意     | 女    |

+------------+-------+

95 rows in set (0.06 sec)

mysql> show table status from bysj like ‘tb_Client‘;

+-----------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-----------------+----------+----------------+---------+

| Name      | Engine | Version | Row_format | Rows | Avg_row_length | Data_length | Max_data_length | Index_length | Data_free | Auto_increment | Create_time         | Update_time | Check_time | Collation       | Checksum | Create_options | Comment |

+-----------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-----------------+----------+----------------+---------+

| tb_client | InnoDB |      10 | Compact    |    3 |           5461 |       16384 |               0 |            0 |   6291456 |              4 | 2020-02-28 15:30:50 | NULL        | NULL       | utf8_general_ci |     NULL |                |         |

+-----------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+-------------+------------+-----------------+----------+----------------+---------+

1 row in set (0.07 sec)

mysql> use bysj;

Database changed

mysql> use bysj;

Database changed

mysql> insert into tb_Client (CLoginname,CPwd,CRealname) values (‘zhang4‘,‘0987‘,‘张1意‘);

Query OK, 1 row affected (0.08 sec)

mysql> Select * From tb_Client;

+-----+------------+------+-----------+--------+------+

| CId | CLoginname | CPwd | CRealname | CEmail | CTel |

+-----+------------+------+-----------+--------+------+

|   1 | zhang      | 0987 | ???       | Cemail | Ctel |

|   2 | zhangmy    | 0987 | ??        | 0987   | 189  |

|   3 | zhang3     | 0987 | ???       | Cemail | Ctel |

|   4 | zhang4     | 0987 | 张1意    | NULL   | NULL |

+-----+------------+------+-----------+--------+------+

4 rows in set (0.00 sec)

mysql> use bysj;

Database changed

mysql> CREATE TABLE xtjl ( jltime datetime,type int(1) ,number float(2,2),jlid int auto_increment NOT NULL ,clientid int(11) ,PRIMARY KEY( jlid));

Query OK, 0 rows affected (0.79 sec)

mysql> describe xtjl;

+----------+------------+------+-----+---------+----------------+

| Field    | Type       | Null | Key | Default | Extra          |

+----------+------------+------+-----+---------+----------------+

| jltime   | datetime   | YES  |     | NULL    |                |

| type     | int(1)     | YES  |     | NULL    |                |

| number   | float(2,2) | YES  |     | NULL    |                |

| jlid     | int(11)    | NO   | PRI | NULL    | auto_increment |

| clientid | int(11)    | YES  |     | NULL    |                |

+----------+------------+------+-----+---------+----------------+

5 rows in set (0.24 sec)

mysql> insert into xtjl (jltime,type,number,clientid) values(‘2020-03-02‘,2,‘5.54‘,2);

Query OK, 1 row affected (0.04 sec)

mysql> select *from xtjl;

+---------------------+------+--------+------+----------+

| jltime              | type | number | jlid | clientid |

+---------------------+------+--------+------+----------+

| 2020-03-01 00:00:00 |    2 |   4.50 |    1 |     NULL |

| 2020-03-01 00:00:00 |    3 |   4.68 |    2 |     NULL |

| 2020-03-02 00:00:00 |    2 |   5.50 |    3 |        1 |

| 2020-03-02 00:00:00 |    2 |   5.54 |    4 |        2 |

+---------------------+------+--------+------+----------+

mysql> update tb_client set CLoginname="name" ,CPwd="555" ,CRealname="陈心",CEmail="",CTel="" where CId=1;

Query OK, 1 row affected (0.23 sec)

Rows matched: 1  Changed: 1  Warnings: 0

MySql操作记录

标签：welcome   erro   options   ima   oob   iat   ons   statement   match   

原文地址：https://www.cnblogs.com/xxnzmy/p/12397650.html