MySQL

From the previous MySQL database production environment maintenance work, summary of some of the small experience and knowledge, may not be more esoteric, but for us to eliminate hidden dangers, to ensure that the MySQL database production

"Permissions for Stored Procedures" ALTER routine edit or delete a stored procedure Create routine creating a stored procedure Execute run Stored procedure "Creation syntax for stored procedures" Delimiter//--Declaration Separator (Command

When multiple timestamp are present in a table and one is set to Current_timestamp, you often encounter#1293-incorrect table definition; There can is only onetimestamp column with Current_timestamp in DEFAULT or on UpdateclauseThe reason is that

Today, when adding Zabbix to monitor 2 MySQL servers, one of the item reported the following error:Value "warning:using a password on the command line interface can is insecure. 6158 "of type" string "is not suitable for value type" Numeric

MYSQL JDBC Fast Query response method, the implementation of the fast return mechanismhas been very tangled, Oracle's fast return mechanism, although the result set a lot, but it can quickly display the first result, although through the MySQL

Libraries in 1.ProxySQLUse Proxysql's admin management interface to connect to Proxysql to see the libraries owned by Proxysql.mysql -uadmin -padmin -h127.0.0.1 -P6032 --prompt 'admin> 'admin> show databases;+-----+---------------+-------------------

Because of the business scenario requirements, you need to record the exact time, but don't want to use the int type to store the time because it's less readable.How do I insert a millisecond-level time into a database in MyBatis?First, let's look

Environment:Os:centos 7_x64Database: mysql-5.7master:192.168.119.23backup:192.168.119.24vip:192.168.119.138Keepalived+mysql the detailed configuration of the construction process is not described, many of the online configuration documents written

First, the cmd common MySQL related commandsmysql-d,--database=name//Open Database--delimiter=name//Specify delimiter-H,--host=name//server name-P,--password[=name]//password-P,--Port[=name]//Port number--prompt==name//Setup

In "MySQL Insert/Update data" This article mentions that, using the load data infile statement, you can load data from a file directly into MySQL, but if the file is very large, you may also need to cut the file, multiple loads, in which case, You

Preface: Recently help senior to deal with JSON file, need to read into the database, in case it might read data from the database. The data is about the Yelp site: https://github.com/Yelp/dataset-examples,http://www.yelp.com/dataset_challenge/.

recently, we are studying NAVICAT premium, a third-party software. He is a three-party database management software. I used this software to call the database on the server in the previous internship, just. There was no detailed study at that time.

1.mysql use a MySQL plugin from mysqludf to implement calling external programs and system commandsDownload Lib_mysqludf_sys Program: Https://github.com/mysqludf/lib_mysqludf_sys2. Installation instructions: 2.1 Query MySQL plugin path:In MySQL,

MySQL BUG: Error1221 (HY000): Incorrect usage of DB GRANT and GLOBAL privilegesWhen performing a prelude to MySQL replication: This error occurs when you create a user for the primary server to connect from the server:GRANT REPLICATION SLAVE on

{MySql.Data.MySqlClient.MySqlException (0x80004005): Fatal error encountered during command execution.---> MySql.Data.MySqlClient.MySqlException (0x80004005): Fatal Error encountered attempting to read the resultset. --->

MySQL master and slave library sync error: 1062 error ' Duplicate entry ' 1438019 ' for key ' PRIMARY ' on Querymysql the master/slave library will occur during synchronization 1062 Last_sql_error:error ' D Uplicate entry ' problem:  Obviously this

Today, we have a course design project to use the MySQL database to execute the command line mysql-u root-P as usual. I want to open the database to create a table, but I am always prompted that I cannot open it. I used MySQL before and installed a

Create a stored procedure for MySQL Mysql stored procedure details 1. Introduction to stored procedures The commonly used operating database language SQL statements must be compiled and then executed before execution. The Stored Procedure

MySQL database insert and update statementsThe SQL statements used to operate databases are generally divided into two types: Query statements, SELECT statements, and update statements, which are also called data operation statements. The

During PHP website development, Mysql database backup or database migration is often encountered. At this time, it is critical to import and export data from the database, mysql provides the command line export tool Mysqldump and Mysql Source import