The importance of automating processes can’t be overestimated. Most things start out as a manual procedure until you work out exactly how things should happen, but many times they stay that way ...

你好! 表T里有字段Field1，已有值，1，2 我现在想插入新值，插入之前判断一下，这个新值是否已存在，已存在的插入，不存在的则不插入。 比如，插入2时，不让插入， 插入3则可以插入。 这个sql语句怎么写，数据库：SQL SERVER 2005.

Microsoft's SQL Server software, used in thousands of businesses ranging from storefront operations to multinational companies, has capabilities to bulk-insert Comma Separated Value files into a ...

Arthur Fuller explores the value of identity columns and the usefulness of their arbitrary values and discusses ways to use SQL Server 2000's IDENTITY_INSERT setting. Despite your numerous ...

I'm doing some development on a dev server of ours for a site that's currently live on another server. They have their own server with a SQL Server database holding the data for the live site. So as ...

Use custom-built .NET Framework 4.0 classes to connect an ASP.NET Web application to a SQL Server 2012 database. In my recent article, I showed how to connect .NET 4.0 C# and Visual Basic applications ...

An update to the cardinality estimator feature in SQL Server 2022 will be one of the biggest changes to the database engine since its inception. Database engines like SQL Server are incredibly complex ...

Many small businesses use databases to hold customer data, such as addresses and contact numbers, or financial information such as banking records. SQL, or Structured Query Language, is used to ...

In part 1 of my SQL Server 2022 features series, you learned about the improvements to the cardinality estimator component of query optimization. In this installment, you will learn about another ...