MySQL
Pymysql: Pymysql.Err.Programmingerror: (1064, “You Have An Error In Your Sql Syntax
## error message Debug the code and report an error after execution is complete ``` pymysql.…
B“Incorrect Syntax Near The Keyword ‘Group‘.Db-Lib Error Message 20018, Severity 15:\Ngeneral S
## error message ``` (156, b"Incorrect syntax near the keyword 'group'.DB-Lib error message 200…
Causes And Solutions Of Mysql Occupying A Lot Of Disk Space
## foreword When we use mysql or other data, we always encounter that the database occupies a lo…
Error: 2036 (Cr_Unsupported_Param_Type) Message: Using Unsupported Buffer Type: %D (Parameter: %D)
## problem When the server started today, the initialization failed, and the 2036 error of mysql…
Python-Mysql Problem: Nameerror: Name '_Mysql' Is Not Defined
## reason `Mysqldb` is not compatible with versions later than `python3.5` ## Solution Use…
Mysql8.0: Error 1396 (Hy000): Operation Alter User Failed For 'Root'@'Localhost'
## problem I've searched for a lot of solutions online, but nothing works. No matter what you…
Error: No Matching Distribution Found For Mysqlclient
## probelm error when installing mysqlcliend with `pip3` ``` ERROR: Command errored out wi…
Mysql: Public Key For *.Rpm Is Not Installed
## peoblem There is no public key in the system that can verify the digital signature of this RP…
The Gpg Keys Listed For The "Mysql 8.0 Community Server" Repository Are Already Installed But They Are Not Correct For This Package
## problem When installing mysql8, I did not encounter this problem before, but this time I sudd…
Nacos Start Error: [Db-Load-Error]Load Jdbc.Properties Error
## 1 Check if it is started in cluster mode In the startup script `startup.cmd`, modify `MODE="s…
All Matches Were Filtered Out By Modular Filtering For Argument: Mysql-Community-Server Error: Un...
## problem Install mysql error, there is no error, this is the error message ``` All matches…
Error 1071 (42000): Specified Key Was Too Long; Max Key Length Is 3072 Bytes
## problem The `zabbix` monitor reported an error when importing the `schema.sql` file, and the…
Error 1045 (28000): Access Denied For User 'Root'@'Localhost' (Using Password: Yes)
## error When connecting to MySql database remotely ``` ERROR 1045 (28000): Access denied fo…
Error Creating Bean With Name'methodvalidationpostprocessor'
# error ``` Error creating bean with name'methodValidationPostProcessor' ``` Little notes …
Error 1396 (Hy000): Operation Alter User Failed For 'Root'@'Localhost'
## problem I found a lot of posts on the Internet and copied each other. The key is not to solve…
Mysql Workbench Error Code: 1175. You Are Using Safe Update Mode And You Tried To Update
## error `MySQL Workbench 6.3` is newly installed on Win7 computer. After opening, execute an `u…
Loading Class `Com.Mysql.Jdbc.Driver'. This Is Deprecated. The New Driver Class Is `Com.Mysql.Cj.Jdbc.Driver'.
abnormal: ``` Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class i…
Mysql Converts A String To A Number
When I wrote the SQL statement today, I sorted the numbers relative to the string type. How to do i…
Mysql Workbench Problem: Ssl Connection Error: Ssl Is Required But The Server Doesn’T Support It.
## problem MySQL workbench version `8.0.27` connects to the local MySQL database report ``` …
Init Datasource Error, Url: Jdbc:Mysql://Localhost:3306/Test
## Problem Description Starting the project today suddenly throws the following error message: …
Error 3021 (Hy000): This Operation Cannot Be Performed With A Running Slave Io Thread; Run Stop Slave Io_Thread For Channel '' First.
## error mysql master-slave service, stop the slave server from the machine to execute the start…
Can't Start Server: Bind On Tcp/Ip Port: Permission Denied
## background The business installed a version of `mysql server 5.7.25` of the `percona` branch …
Error 1805 (Hy000): Column Count Of Mysql.User Is Wrong. Expected 45, Found 42. The Table Is Probably Corrupted
## background The `mysql.user` table is broken after importing the data of `mysql 5.5` version i…
Parserexception: Syntax Error, Error In :'It 1 Limit ? ', Expect Limit, Actual Limit Pos , Line , Column , Token Limit
## error PageHelper's unsafe paging problem, resulting in ``` ParserException: syntax error…
Org.Springframework.Jdbc.Badsqlgrammarexception ### Error Querying Database Cause: Com.Mysql.Jdbc
## conclusion first: Because there is a product description field set to `desc` in the table des…
Job For Mysqld.Service Failed Because The Control Process Exited With Error Code. See “Systemctl Sta
## Start mysql8 ``` systemctl start mysqld.service ``` ## error ``` Job for mysqld.serv…
Error: Failed Dependencies: Libaio.So.1()(64bit) Is Needed By Mysql-Community-Server-5.7.26-1.El7.X86_64
## error error when Linux installation MySQL ``` Failed dependencies: libaio.so.1()(64bit) …
How To Recover The Mysql Password When Forgotten-Windows/Liunx Version: Mysql-8.0.27
## 1 mysql password reset under windows 1.1 Stop the mysql service (in the starting state) ``…
How To Deal With Mysql Innodb Startup Failure And Unable To Restart
The computer crashed during use. After restarting, it was found that mysql did not start successful…
Error 3021 (Hy000): Unknown Error 3021
When implementing mysql master-slave replication configuration, an error is reported as shown in th…
Error 1820 (Hy000): Unknown Error 1820
## problem description ``` mysql> update user set authentication_string=password('mysql123') wh…
Row Size Too Large. The Maximum Row Size For The Used Table Type, Not Counting Blobs, Is 65535. You Have To Change Some Columns To Text Or Blobs
## reason When MySQL builds a table, there is a limit on the maximum length of a single row: the…
Hive Connection Error While Processing Statement: Failed: Execution Error
## ERROR ``` SQL ERROR [1] [08S01]: Error while processing statement: FAILED: Execution Error, …
Sql Exception Error: Method Querytotal Execution Error Of Sql
## descriptioon In a connection query, there is no problem with the query in the MySQL query too…
Mysql Error Message Can’T Find Error-Message File
Install MYSQL In execution ``` mysqld --initialize --console ``` encountered an error …
The Master-Slave Connection Is Disconnected: Error Reading Packet From Server: Lost Connection To Mysql Server During Query (Server_Errno=20131)
## Problem Description Received four or five master-slave disconnection and recovery text messag…
Pyenv 2.7 Environment To Install Mysql-Python Error
## error ``` ERROR: Command errored out with exit status 1: command: /root/.pyenv/version…
Mysql: Error 1045 (28000): Unknown Error 1045
An error may occur when entering the database for the first time after installing the mysql databas…
Error 1064 (42000): You Have An Error In Your Sql Syntax;
Execute an sql statement in mysql today and report an error: ``` mysql> select sum(xxxx) from x…
Mha High Availability: Masterha_Check_Repl Error Summary
## Troubleshooting ``` [root@DBMysql ~]#masterha_check_repl --conf=/etc/masterha/app1.cnf ``` …
Detailed Explanation Of Mysql Error1118 Error Report
## two types of ERROR1118 **1.** ``` ERROR 1118 (42000): Row size too large. The maximum row…
I Encountered The Following Error When Installing The Tokudb Engine: Error: Percona Server Is Not Running With Jemalloc
## error The following error is encountered when installing the tokudb engine: ``` Checking …
Mysql Server Power Off Got Fatal Error 1236
The computer room was powered off, and after mysql started, an error was reported from the library:…
Docker-Error Reported After Running Mysql Container: [Error] Innodb: Redo Log File ‘./Ib_Logfile0’ Exists _
## background Run and start the mysql container on the local mac docker ``` docker run -d -p…
Docker-Error After Running Mysql Container: [Error] --Initialize Specified But The Data Directory Has Files In It. Aborting.
### background Run and start the mysql container on the local mac docker ``` docker run -d -…
How To Solve Mysql Error: Error 1045 (28000)
## problem description ``` ┌──(rabbit㉿ASUS)-[/mnt/c/Users/rabbit] └─$ mysql -uroot -p3xxxxxxxS…
Error Querying Database. Cause: Java.Sql.Sqlsyntaxerrorexception: Table 'Activiti_Dev.Act_Ge_Property' Doesn't Exist
When learning the activiti process engine, integrating activiti with springboot can automatically d…
2061:Authentication Plugin 'Caching_Sha2_Password' Reported Error:Authentication Require Secure Connection
## error occured In MySQL8.0, create a user for master-slave replication: ``` mysql> CREATE …
Error 1045 (28000): Access Denied For User 'Root'@'Localhost' (Using Password: Yes
``` /etc/init.d/mysqld stop mysqld_safe --user=mysql --skip-grant-tables --skip-networking & upd…
Error: Could Not Read Entry At Offset 946675767: Error In Log Format Or Read Error
## problem description Check the content in the binlog and find that it cannot be viewed normall…
Execution Error Sql_Error_Info: Near “.“: Syntax Error
I made the simplest mistake when I was doing SQL problems today. ``` update salaries set salar…
64-Bit Windows10, Mysql8.0.13 Reset Password (Forgot Password Or Unable To Log In)
After many trials, the steps to reset the password are as follows **step1**. Open the command wi…
Don't Understand Redis? After Reading This Story, You Will Understand!
## I am Redis Hello, I am Redis, and a man named Antirez brought me into this world. ![redis]…
Mysql Error 1062 (23000): Duplicate Entry ‘%-Root‘ For Key ‘Primary‘
At that time, I wanted to use `SQLyog` to remotely connect to the database, but found that I could …
Differences And Differences Between Inner Join And Outer Join Query Scenarios In Mysql Query
## Preface When I write sql query, the most commonly used query is where conditional query. …
Navicat: Unknown Error 1130,Unknown Error 1045
Use Navicat to link MySQL, and an error like this appears: ``` unknown error 1130 ``` ## So…
Mysql Creates Auto-Increasing Sequence
## Create table ``` drop table if exists sequences; create table sequences ( SEQUENCE_NAME…
Failed: Semanticexception [Error 10016]: Line 66:45 Argument Type Mismatch ‘Ca_Coupon_Id‘: “Map“ Or "List" Is Expected At Function Size, But "String" Is Found
## error statement: ``` if(ca_coupon_id is null, 0, size(ca_coupon_id)) as m_coupon_available_n…
Windows Mysql: Error 1045 (28000): Access Denied For User 'Odbc'@'Localhost' (Using Password: No)
In the Windows environment, when installing mysql for the first time, I get an error ``` ERROR…
Mysql5.6 Error: Error 1709 (Hy000): Index Column Size Too Large. The Maximum Column Size Is 767 Bytes.
## 1\. Statement ``` mysql> CREATE TABLE permissions ( -> role varchar(50) NOT NULL, …
Error 1728 (Hy000): Cannot Load From Mysql.Procs_Priv. The Table Is Probably Corrupted
Failed to create user creation. `ERROR 1728 (HY000): Cannot load from mysql.procs_priv. The table i…
[App Service For Linux(Function) ] Python Modulenotfounderror: No Module Named 'Mysqldb'
## Problem Description When using Azure Function to create a new Python Function, `ModuleNotFoun…
Mysql Workbench Import Error Code: 2013. Lost Connection To Mysql Server During Query
## Reason The connection read timeout, MYSQL loses the connection, and the service has been disc…
Error Setting Driver On Unpooleddatasource. Cause: Java.Lang.Classnotfoundexception: Cannot Find Class: Com.Mysql.Cj.Jdbc.Driver
## reason I went and I imported the **mysql5** package : The User Specified As A Definer ('Mysql.Infoschema'@'Localhost') Does Not Exist
## solution ``` mysql> CREATE USER 'mysql.infoschema'@'localhost' IDENTIFIED BY 'password'; …
Mysql 5.7 2003 Cant Connect To Mysql Server On 10061 Unknown Error
Solution for the `2003-Can’t connect to Mysql on ‘host name’ (10061)` error when use navicat to con…
Mysql Reports Error 1615 (Hy000): Prepared Statement Needs To Be Re-Prepared
Today the company’s project view query reported an error. I looked for the code and the reason for …
Error When Adding Data Into Mybatis: Error: Field * Doesn’T Have A Default Value
## Table ``` CREATE TABLE `apply_log` ( `id` int(10) NOT NULL AUTO_INCREMENT COMMENT '主键', …
[Err] 1055 - Expression #1 Of Order By Clause Is Not In Group By Clause And Contains Nonaggregate
Execution data table structure error: ``` [Err] 1055 - Expression #1 of ORDER BY clause is not …
Cause: Java.Sql.Sqlexception: Unknown Initial Character Set Index '255' Received From Server. Initial Client Character Set Can Be Forced Via The 'Characterencoding' Property
## error message ``` ### Error querying database. Cause: java.sql.SQLException: Unknown initia…
[Error] [Fatal] Innodb: Semaphore Wait Has Lasted > 600 Seconds
**mysql version**: 5.7.29 When importing the dump file of big data, the database is automaticall…
Mysql Query Information_Schema.Columns Error
## DTS data synchronization error prompt: ``` DTS-1020013 Get db tables error,err msg:SELECT…
Error++:Communications Link Failure,The Last Packet Successfully Received From The Server Was *** Millisecon
I did a test recently, and the main thread business processing logic is relatively long. I found th…
Export Mysql Query Data To Csv File
## Export MySQL query data to csv file to `.csv`: ``` # mysql -h xx.xx.xx.xx -u root -p'M…
Mysql Clears The Data Of The Specified Table Under The Specified Database And Retains The Table Structure
## background For some purposes, it is necessary to frequently delete all data of a specified se…
How To Check The Space Occupied By A Table (Table) In Mysql
Query the amount of disk space occupied by all databases ``` select TABLE_SCHEMA, concat(tr…
Mysql Group Query And Count The Sql Statements Greater Than A Certain Value
## Table data Statistical data sql statement ``` SELECT name,count(*) FROM `test` GROUP BY n…
What Is The .Frm.Ibd File In Ubuntu Mysql
What is the .frm.ibd file in ubuntu mysql? `.ibd`: stores metadata of each table, including the …
Ubuntu Reinstall Mysql And Restore Data Through .Frm.Ibd
ubuntu reinstall mysql and restore data through .frm.ibd ## mysql storage location: ``` /var…
Ubuntu Mysql5.7 Startup Prompt Error: /Var/Run/Mysqld/Mysqld.Sock
ubuntu mysql5.7 startup prompt error ``` mysql start ERROR 2002 (HY000): Can't connect to loca…
Mysql Error Errcode: 13 "Permission Denied"
mysql error Errcode: 13 "Permission denied" Background: After reinstalling mysql and dragging th…
Install And Completely Delete Mysql5.7 Under Ubuntu16.04
## Delete mysql5.7 completely ``` #The following commands are executed in sequence sudo rm /…
Mysql:Error Code 1235,This Version Of Mysql Doesn't Yet Support 'Limit & In/All/Any/Some Subquery'
## error Encountered an error when executing the sql statement: ``` [Err] 1235 - This versio…
Django.Db.Utils.Internalerror: (1153, "Got A Packet Bigger Than 'Max_Allowed_Packet' Bytes")
Encountered an error when writing data: ``` django.db.utils.InternalError: (1153, "Got a packet…
Pymysql Batch Data Insertation
Insert a large amount of data into a table in batches. For example, insert name into the tags ta…
Delete Duplicate Data And Only Keep One In Mysql
## background In the tens of thousands of records in the people table, there are some identical …
Mysql Expression Of Select List Is Not In Group By Clause And Contains Nonaggregated Column...This Is Incompatible With Sql_Mode=Only_Full_Group_By
## Error message ``` select * from `bdetector` where id in (select id from `bdetector` group b…
How To Use The Command To View The Current Mysql Version
mysql Use the command to view the current mysql version ``` select version(); ``` The resul…
Mysql Sets The Default Value'collation_Connection'
## MySql set the default value'collation\_connection' ``` SET NAMES utf8mb4 COLLATE utf8mb4_uni…
What Is The Difference Between Mysql Count(1) And Count(*)
`count(1)` and `count()` are generally used to count the amount of data in the entire table, includ…
Sql: How To Query Data In A Certain Time Range
SQL query data in a certain time range ## sql statement ### first method ``` SELECT users…
How To Reset The Auto-Increment Of Id Auto_Increment In Mysql?
## solution ``` ALTER TABLE tablename AUTO_INCREMENT = 1 ``` > **Note**: For InnoDB, you ca…
Mysql How To Get The Latest Data/Last Data In The Group (Group By)
## Data There is a data table for targt, the data is as follows: ``` Id Name Other_Colum…
Optimization/Solution For Problem That Django Pagination Extraction Speed Is Too Slow
## Introduction Fast paging can be achieved in django, but when the data reaches several million…
Django Model Layer (Database) Connection Processing Logic
**Django model layer (database) connection processing logic:** 1. Use `CONN_MAX_AGE` configurat…
Django Counts The Number Of Articles By Year And Month, Optimizes Sql Statements And Increases The Speed By 30 Times
## problem Using the Django Debug Toolbar, I found that the sql statement to count the number of…
How To Get Equivalent Sql Statement Corresponding To Django Orm
Sometimes you want to know how Django ORM makes our queries execute, or what the SQL corresponds to…
The Difference Between Django Null=True And Blank=True
## Introduction It is important to understand that the options in the Django model field definit…
Django.Core.Exceptions.Improperlyconfigured: Mysqlclient 1.4.0 Or Newer Is Required; You Have 0.10.1.
## environment * python=3.8 * django=3.1 ## error message ``` django.core.exceptions…
Django: How To Uses Bulk_Create (Batch Creation) To Get The Id After Successful Creation
## environment Django: how to uses bulk\_create (batch creation) to get the id after successful …