-- Instal as a temp stored proc on any SQL edition RAISERROR ('Wrong database context. Please USE [master] to allow sp_generate_merge to be installed as a system ...

# This script checks some SQL Server best practices, running it and understanding the results is for those who have been working with the product for some time. # It can be run locally or remotely ...

更新SQL在MySQL中的执行过程，因为过程涉及到不同情况的分支流程，我用一张活动图把整个过程串了起来，方便大家理解。 新开一个系列，尝试把一些常见的面试题做成速记图，用来面试前临时抱佛脚。 最近我这个中年老登也在面试，形式所迫也是没办法。

从业以来前面的几年主要在做客户端开发，用到的数据库都是表结构比较简单的 SQLite，以我那还给老师一大半的 SQL 水平倒也能对付。现在转岗做后端开发，就显得有点捉襟见肘了，特别是各种 JOIN，有时候傻傻分不清楚，于是索性弄明白并做个记录。 前言 在 ...

Students of database courses usually encounter difficulties in learning structured query language (SQL). Numerous studies have been conducted to improve how students learn SQL. However, learning SQL ...