编程问答
MySQL quot;goodquot; way to insert a row if not found, or update it if it is found(MySQL“好如果未找到则插入一行，如果找到则更新它)
MySQL friends table(MySQL好友表)
How do I store orders?(我如何存储订单?)
What are indexes and how can I use them to optimize queries in my database?(什么是索引以及如何使用它们来优化数据库中的查询?)
Is it possible to create a column with a UNIX_TIMESTAMP default in MySQL?(是否可以在 MySQL 中创建一个具有 UNIX_TIMESTAMP 默认值的列?)
Table with 80 million records and adding an index takes more than 18 hours (or forever)! Now what?(包含 8000 万条记录的表并添加索引需要超过 18 小时(或永远)！怎么办?)
How can I tell if a database table is being accessed anymore? Want something like a quot;SELECT triggerquot;(如何判断数据库表是否正在被访问?想要像“选择触发器这样的东西)
Best practices to store CreditCard information into DataBase(将信用卡信息存储到数据库中的最佳实践)
How many database indexes is too many?(多少数据库索引太多了?)
Adding constraints that check a separate (linked) table for a value(添加检查单独(链接)表的值的约束)
SQL Server: One Table with 400 Columns or 40 Tables with 10 Columns?(SQL Server:一张表有 400 列还是 40 表有 10 列?)
Understanding COMPATIBILITY_LEVEL in SQL Server(了解 SQL Server 中的 COMPATIBILITY_LEVEL)
