MySQL: ON DUPLICATE KEY UPDATE 用法 避免重复插入数据_MySQL
Jun 01, 2016 pm 01:31 PMbitsCN.com
INSERT INTO osc_visit_stats(stat_date,type,id,view_count) VALUES (?,?,?,?) ON DUPLICATEKEY UPDATE view_count=view_count+?INSERT INTO osc_space_visit_records(space,user,visit_count,ip,visit_time) VALUES(?,?,?,?,?) ON DUPLICATE KEY UPDATE visit_count=visit_count+1,ip=?,visit_time=NOW()
使用该语法可在插入记录的时候先判断记录是否存在，如果不存在则插入，否则更新，很方便，无需执行两条SQL
bitsCN.com
Hot Article
Hot tools Tags
Hot Article
Hot Article Tags
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
Reduce the use of MySQL memory in Docker
Mar 04, 2025 pm 03:52 PM
Reduce the use of MySQL memory in Docker
How do you alter a table in MySQL using the ALTER TABLE statement?
Mar 19, 2025 pm 03:51 PM
How do you alter a table in MySQL using the ALTER TABLE statement?
How to solve the problem of mysql cannot open shared library
Mar 04, 2025 pm 04:01 PM
How to solve the problem of mysql cannot open shared library
What is SQLite? Comprehensive overview
Mar 04, 2025 pm 03:55 PM
What is SQLite? Comprehensive overview
Run MySQl in Linux (with/without podman container with phpmyadmin)
Mar 04, 2025 pm 03:54 PM
Run MySQl in Linux (with/without podman container with phpmyadmin)
Running multiple MySQL versions on MacOS: A step-by-step guide
Mar 04, 2025 pm 03:49 PM
Running multiple MySQL versions on MacOS: A step-by-step guide
How do I secure MySQL against common vulnerabilities (SQL injection, brute-force attacks)?
Mar 18, 2025 pm 12:00 PM
How do I secure MySQL against common vulnerabilities (SQL injection, brute-force attacks)?
What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?
Mar 21, 2025 pm 06:28 PM
What are some popular MySQL GUI tools (e.g., MySQL Workbench, phpMyAdmin)?
