Mysql database reports an error: row size too large (> 8126) Changing some columns to TEXT or BLOB or using ROW_ FORMAT=DY

1. Problem description ：

Row size too large (> 8126). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help

2. The reasons causing ：

1. There are many data in the table , Too many logs are generated , The default log file size is too small ;

2. Different engines use different storage formats .MyISAM Yes 3 A row storage format ：fixed/dynamic/compressed.InnoDb stay MyIASM Based on the new introduction Barracuda. As for the default settings of different engines , And the differences between various storage formats ,

3. Solution

Mode one ： modify Mysql Database configuration file

hold Mysql Database my.ini Configuration item innodb_log_file_size=512M modify 1024M, Just restart the database service .

Mode two ： Modify other engines

Database information before modification ：

Change to engine ：

Mode three ：

Try adding the following options to the configuration file ：

To activate the new file format ： innodb_file_format = Barracuda

Store each table in its own file ： innodb_file_per_table = 1

To prevent accidents ： innodb_strict_mode = ON

To store long variable length column values , Please use dynamic or compressed row format for large tables .

for example , Use ALTER TABLE LargeTable ENGINE = InnoDB ROW_FORMAT = DYNAMIC;