How does PHP operate the database once and make a field of a certain table decrement once?-PHP Chinese website Q&A-How does PHP operate the database once and make a field of a certain table decrement once?-PHP Chinese website Q&A
Come and watch and learn.
触发器，删除时候执行sql代码，具体怎么写百度下 很多，主要要考虑性能
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How does PHP operate the database once and make a field of a certain table decrement once?-PHP Chinese website Q&A-How does PHP operate the database once and make a field of a certain table decrement once?-PHP Chinese website Q&A
Come and watch and learn.
触发器，删除时候执行sql代码，具体怎么写百度下 很多，主要要考虑性能