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Recommended SQL database design for tags or tagging [closed]
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+1 Nice to see some NoSQL implementations also.
– Xeoncross
Mar 18 '11 at 16:24
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PL/SQL, how to escape single quote in a string?
In the Oracle PL/SQL, how to escape single quote in a string ? I tried this way, it doesn't work.
4 Answers
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how to emulate “insert ignore” and “on duplicate key update” (sql merge) with postgresql?
Some SQL servers have a feature where INSERT is skipped if it would violate a primary/unique key constraint. For instance, MySQL has INSERT IGNORE .
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A dependent property in a ReferentialConstraint is mapped to a store-generated column
... had left the foreign key part of the relationship as the default given by SQL Server 2008 Management Studio, which was the primary key fields of the child table, not the column I had created to contain the foreign key value.
– robaker
Mar 5 '12 at 10:23
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How to call a stored procedure from Java and JPA
...text is this:
JPA and database stored procedures
If you’re a big fan of SQL, you may be
willing to exploit the power of
database stored procedures.
Unfortunately, JPA doesn’t support
stored procedures, and you have to
depend on a proprietary feature of
your persistence provider. However,
you ca...
Get first day of week in SQL Server
...-- Magic convertion of monday to 1, tuesday to 2, etc.
-- irrespect what SQL server thinks about start of the week.
-- But here we have sunday marked as 0, but we fix this later.
SET @DOW = (@DOW + @@DATEFIRST - 1) %7
IF @DOW = 0 SET @DOW = 7 -- fix for sunday
RETURN DATEADD(DD, 1 - @DOW,...
SEH stack 结构探索（1）--- 从 SEH 链的最底层（线程第1个SEH结构）说起 -...
... _EXCEPTION_REGISTRATION_RECORD 结构，我们最好准备纸笔记录下它的 stack 变化情况
1. ntdll32!_SEH_prolog4() 构造的 stack 结构
刚进入 ntdll32!_SEH_prolog4() 时的 stack 是下面的图
上面的两个返回地址一个是返回到 ntdll32!_RtlUserThreadStart() 一...
Using an RDBMS as event sourcing storage
If I were using an RDBMS (e.g. SQL Server) to store event sourcing data, what might the schema look like?
6 Answers
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PDO's query vs execute
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query runs a standard SQL statement and requires you to properly escape all data to avoid SQL Injections and other issues.
execute runs a prepared statement which allows you to bind parameters to avoid the need to escape or quote the parameters. ...
Nginx url重写rewrite实例详解 - 更多技术 - 清泛网移动版 - 专注IT技能提升
...l重写 rewrite在nginx中实现url重写，学习rewrite的具体用法，包括301重定向的内容等，希望对大家有所帮助。nginx rewrite 实现二级域名跳转
当访问http://www.jbyuan.com跳转到http://www.jbyuan.com/nvxingjiankang/
方法一：
这种方法浏览器地址会...