select distinct dbo.RegexGroup( [Url], N'https?://(?<server>([\w-]+\.)*[\w-]+)', N'server' ) from [UrlTable] You can also use this function within computed columns. The following table definition divides e-mail addresses into the mailbox and the domain. Copy CREATE TABLE [...
This query uses grouping to determine every distinct server stored in the Url column of the UrlTable table. 複製 select distinct dbo.RegexGroup( [Url], N'https?://(?<server>([\w-]+\.)*[\w-]+)', N'server' ) from [UrlTable] You can also use this funct...
SQL Server .NET API 浏览器 Microsoft.SqlServer.TransactSql.ScriptDom C# 使用英语阅读 添加 打印 Twitter LinkedIn Facebook 电子邮件 SelectScalarExpression Class Reference Feedback Definition Namespace: Microsoft.SqlServer.TransactSql.ScriptDom Assembly: Microsoft.SqlServer.TransactSql.ScriptDom.dll ...
适用于: SQL Server 2019 (15.x) 及更高版本本教程演示如何使用 SQL Server 语言扩展创建一个 C# 类,该类接收来自 SQL Server 的两列(ID 和 text),并接收一个正则表达式 (regex) 作为输入参数。 该类会将两列返回到 SQL Server(ID 和 text)。对于...
Are there any plans to incorporate regular expression support into OOTB SQL Server? Competitors have supported it for over a decade, and internet searches reveal that SQL Server developers have sought it for over 15 years. Mitch_van_Huuksloot ...
(dog | cat)Capture and implicitly number the expressiondog | cat (?<pet>dog | cat)Capture subexpressiondog | catand name itpet Examples Some examples of using regular expressions. Example 1: Finding All Select Statements You want to find all SELECT statements in your SQL scripts. ...
select FirstName,LastName from Person.Person where FirstName = 'timothy' collate Latin1_General_CS_AS; #加上限制条件collate Latin1_General_CS_AS 会变成大小写敏感 2.模糊匹配 我给出一个字符串的一部分或者是样式,SQL SERVER 帮我进行模式匹配,然后保留在结果集中。
The Expression Builder button next to the Find what field then becomes available. Select this button to display a list of the available regular expressions. When you choose any item from the Expression Builder, it's inserted into the Find what string....
SQL SERVER定位字符位置的函数为CHARINDEX: CHARINDEX ( expressionToFind , expressionToSearch [ , start_location ] ) 可以从指定位置起开始检索,但是不能取第N次出现的位置,需要自己写SQL来补充,有以下几种思路: 1.自定义函数,循环中每次为charindex加一个计数,直到为N ...
SELECT @CustomerID = @@Identity 除了要求CustomerID需要唯一性外(数据库是将CustomerID设为自增的),对E-mail并没有特别的要求啊。 在回头看CustomerDB类,也确实是老老实实地用SqlCommand调用该存储过程。传递参数的时候也没有限制。然而当我试图用相同的E-mail注册,就是通不过。显然程序是受到条件限制的。我反...