Provides instant, context-aware suggestions for databases, tables, columns, stored procedures, and T-SQL keywords — with foreign-key-driven JOIN suggestions and a library of snippet shortcuts that ...

Why is the language developers and DBAs use to organize data such a mess? Here are 13 reasons we wish we could quit SQL, even though we probably won't. For all its popularity and success, SQL is a ...

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

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 ...

SQL is neither the fastest nor the most elegant way to talk to databases, but it is the best way we have. Here’s why Today, Structured Query Language is the standard means of manipulating and querying ...

This repository contains the BNF (Backus-Naur Form) grammars for three versions of standard SQL — SQL-92, SQL-99 and SQL-2003. It may not be the most recent release ...

b.remark, a.remark) remark, COALESCE(b.update_time, a.update_time) update_time, c.employee_name FROM t_medical_treatment_list a LEFT OUTER JOIN t_medical_treatment_link b ON (a.list_number = ...