MySQL-Use primary key to delete duplicate data-MySQL Development Skills (2) Video Tutorial-php.cn

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MySQL Development Skills (2) Video Tutorial

Chapter1 Course Introduction
1-1 Course Introduction
Chapter2 How to convert rows and columns
2-1 MySQL-row to column scenario introduction
2-2 MySQL-Requirements Analysis
2-3 MySQL-use the self-join method to convert rows to columns
2-4 MySQL-use CASE method to convert rows to columns
2-5 MySQL-Single column to multiple rows scenario introduction
2-6 MySQL-use the method of serializing tables to convert rows to columns
2-7 MySQL-use UNION method to convert columns to rows
2-8 MySQL-use serialized table method to achieve column conversion
Chapter3 How to generate a unique serial number
3-1 MySQL-common method for unique serial numbers in databases
3-2 How to use SQL statements to create serial numbers for special needs
Chapter4 How to remove duplicate data
4-1 MySQL-Use primary key to delete duplicate data
4-2 MySQL - How to handle complex deduplication

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