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MySQL Tutorials - Herong's Tutorial Examples
This MySQL tutorial book is a collection of notes and sample codes written by the author while he was learning MySQL himself, an ideal tutorial guide for beginners. Topics include introduction of Structured Query Language (SQL); installation of MySQL server on Windows, Linux, and macOS; using MySQL ... 2022-11-22, 415👍, 1💬

"Multiple files found for the same tablespace ID" Error
This section provides a tutorial example on the 'Multiple files found for the same tablespace ID' error caused by an outdated database file left from an external MySQL server. 2022-10-01, 806👍, 0💬

What Is MySQL Shell
Quick introduction of MySQL Shell and ways to start it and access the local MySQL server. 2022-10-01, 395👍, 0💬

Loading JDBC Driver Class - com.mysql.cj.jdbc.Driver
Describes how to load the MySQL JDBC driver class, com.mysql.cj.jdbc.Driver, from mysql-connector-java-8.0.17.ja r. 2022-10-01, 357👍, 0💬

MySQL Data Directory Initialization
Tutorial example on how to initialize the MySQL server data directory with the 'mysqld --initialize-insecure' command, which will create a root user without password. 2022-10-01, 297👍, 0💬

--secure-file-priv="" - MySQL Server Option
This section provides a tutorial example on how to change the '--secure-file-priv' MySQL Server option, to control directory permissions for dumping all tables in a database as tab delimited files. 2022-10-01, 271👍, 0💬

"SELECT COUNT(*)" on InnoDB Table
This section provides a tutorial example showing why 'SELECT COUNT(*)' is slow on InnoDB tables. It does a full table scan by reading all data pages to count the number of rows. 2022-10-01, 213👍, 0💬

Impact of InnoDB Log Buffer on INSERT
This section provides a tutorial example to demonstrate the performance impact of InnoDB Log Buffer. Setting innodb_flush_log_at_trx_commit =0can reduce execution time reduction on INSERT and other data change statements from 35 ms to 1 ms. 2022-10-01, 212👍, 0💬

MySQL Server Log Files on CentOS
This section provides a tutorial example on how to review log file settings and locations for MySQL 8.0 server on CentOS 8 systems. 2022-10-01, 191👍, 0💬

Archived: Installing MySQL 5.7.10 with Installer
This section provides a tutorial example on how to download and install MySQL 5.7.10 on a Windows system using MySQL Installer. 2022-10-01, 186👍, 0💬

MySQL Connector/J - Download and Installation
Describes how to download and install MySQL Connector/J (JDBC driver) required to run Java programs to access MySQL servers. 2022-10-01, 180👍, 0💬

MySQL Authentication Method "caching_sha2_password"
A tutorial example is provided on how to create a new user account with 'mysql_native_password' authentication method to avoid the 'caching_sha2_password' error with mysqli_connect() method. 2022-10-01, 166👍, 0💬

Using "mysql" Command to Run SQL Statements
This section provides some tutorial examples on how to run SQL statements on a MySQL server with the client tool mysql. SQL statements can be executed one by one interactively, or in batch mode. 2022-10-01, 165👍, 0💬

Using DDL to Create Tables and Indexes
This chapter provides tutorial notes on DDL (Data Definition Language) statements. Topics include CREATE TABLE, CREATE INDEX, and ALTER TABLE statements; selecting column options when creating tables. 2022-10-01, 165👍, 0💬

Predicate Operations
This section provides a list of predicate operations supported by MySQL with some examples. 2022-10-01, 161👍, 0💬

PHP mysqli_connect() Error on "localhost" on macOS
This section provides a tutorial on the PHP mysqli_connect() 'No such file or directory' error, and the workaround of replacing 'localhost' with '127.0.0.1'. 2022-10-01, 155👍, 0💬

Transaction Management and Isolation Levels
This chapter provides tutorial notes on transactions. Topics include introduction of transactions, transaction management in MySQL, transaction isolation levels: Read Uncommitted, Read Committed, Repeatable Read, Serializable. 2022-10-01, 154👍, 0💬

Table Column Types for Bit Strings
Describes 2 types of table columns to store bit strings: BIT and BIT VARYING. 2022-10-01, 146👍, 0💬

MySQL System Variables for InnoDB Engine
This section describes some important MySQL system variables that control the behavior of the InnoDB storage engine. 2022-10-01, 144👍, 0💬

Archived: Installing MySQL 5.5.15
This section provides a tutorial example on how to install MySQL 5.5.15 on a Windows system. 2022-10-01, 143👍, 0💬

mysqldump - Dumping Data to Files
This section provides some tutorial examples on how to use mysqldump tool to dump the structure and data of tables from a MySQL server to files. 2022-10-01, 142👍, 0💬

MySQL Command Line Client Tool
A tutorial example on how to use the MySQL Command Line Client Tool to connect to MySQL Server. The example also includes SQL commands to create a new test database/table and insert some data to the table. 2022-10-01, 141👍, 0💬

Spatial Data Functions
Describes some commonly used Spatial Data functions like, ST_GeomFromText(), ST_AsText(), ST_GeometryType(), POINT(), ST_X(), ST_Y(), ST_NumPoints(), ST_PointN(), ST_Area(), etc. 2022-10-01, 141👍, 0💬

Un-Installing MySQL
A tutorial example on how to un-install MySQL on a Windows system using MySQL Installer. 2022-10-01, 140👍, 0💬

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Android ASP Astrology Bitcoin Blowfish Built-in C# Calendar CD-DVD Chinese Cryptography DES Encoding Ethereum Flash GB2312 General H Herong History HTML Java JavaScript JDBC JSP JVM Linux Molecule Movie Music MySQL Perl PHP Physics PKI Publication Python Reference REST SOAP Sorting Swing TV Series UML Unicode VBScript Web Web-Services Windows WSDL XML XMLPad XSD XSL-FO