Strict Mode for Databases

Strict Mode

1. Introduction

The mysql database has strict mode, and there may be fields with default values ​​that must be assigned values ​​when sql is inserted, otherwise an error will be reported.
Version 5.7 defaults to strict mode, the way to insert into the user table to create a new user cannot be adjusted

2. Use the configuration file to enable and disable strict mode management [mysql service enabled]

1. Check if strict mode is enabled

1.linux [my.cnf file]

vim /etc/my.cnf

Strict mode:
sql-mode=NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
Search for sql-mode If you can't find the previous content, it means non-strict mode

2.windows is my.ini

Strict mode: sql-mode=NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
Search for sql-mode in the file if you can't find the previous content, it means non-strict mode

2. Turn off strict mode [my.cnf file], to enable delete statement

Search for the sql-mode keyword, if not, add a line at the end of the file

Replace with: sql-mode=NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTIO

3. Restart the service

Restart mysql

service mysql restart

4. Enter mysql to refresh the permission table

flush privileges;