1、普通的insert into
如果(主键/唯一建)存在,则会报错
新需求:就算冲突也不报错,用其他处理逻辑
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2、基本语法(INSERT INTO ... ON CONFLICT (...) DO (UPDATE SET ...)/(NOTHING))
语…
一、这是一个“反事实问题”,但并不抽象(This Is a Counterfactual Question, but Not an Abstract One)1、历史上,很多系统都是“先失控,再补协议”(Historically, Many Systems Lose Control Before Prot…
作文题目Many people prefer to watch foreign films rather than locally produced films. Why could this be? Should governments give more financial support to local film industries?It is true that foreign films are more popular in many countries than domesti…