可以在C#中這樣做：Regexregex = newRegex(@"]*>[^");
stringcleanedHtml = regex.Replace(html, "");
可是我並不想再寫個循環去遍歷每條記錄，然後保存每條記錄，我想在數據庫中壹步到位，而sql只提供了簡單的replace函數，這個函數明顯不能達到咱的要求，那就去寫壹個自定義函數吧。
函數源代碼如下：CREATE functiondbo.regexReplace
(@source ntext,--原字符串@regexp varchar(1000),--正則表達式@replace varchar(1000),--替換值@globalReplace bit=1,--是否是全局替換@ignoreCase bit=0 --是否忽略大小寫)returnS varchar(1000)AS
begin
declare@hr intege
declare@objRegExp integer
declare@result varchar(5000)exec@hr =sp_OACreate'VBScript.RegExp',@objRegExp OUTPUT
IF@hr 0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OASetProperty@objRegExp,'Pattern',@regexp
IF@hr 0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OASetProperty@objRegExp,'Global',@globalReplace
IF@hr 0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OASetProperty@objRegExp,'IgnoreCase',@ignoreCase
IF@hr 0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OAMethod@objRegExp,'Replace',@result OUTPUT,@source,@replace
IF@hr 0 begin
exec@hr =sp_OADestroy@objRegExp
returnnullend
exec@hr =sp_OADestroy@objRegExp
IF@hr 0 begin
returnnullend
return@result
end
需要註意的是，即使寫好了這個函數，也並不能馬上使用。執行這個函數時可能會出現以下的錯誤：Msg 15281, Level 16, State 1, Line 1
SQL Server blocked access to procedure 'sys.sp_OACreate' of component 'Ole Automation Procedures' because this component is turned off as part of the security configuration for this server. A system administrator can enable the use of 'Ole Automation Procedures' by using sp_configure. For more information about enabling 'Ole Automation Procedures', see "Surface Area Configuration" in SQL Server Books Online.
這是因為未開啟Ole Automation Procedures選項，MSDN中的Ole Automation Procedures選項。執行下面的語句開啟這個選項：sp_configure'show advanced options',1;GO
RECONFIGURE;GOsp_configure'Ole Automation Procedures',1;GO
RECONFIGURE;GO
所有的準備工作都已經做好，那就試驗壹下吧。
Example1：忽略大小寫並替換selectdbo.regexReplace('123456',']*>[^','',1,1)
Example2: 使用貪婪匹配
html代碼：
Also Available - Smith & Hogan: Criminal Law Cases & Materials 10th ed
There is, as ever, detailed analysis of the many recent case developments, in particular,
a revision of the chapter dealing with secondary liability and joint enterprise.
調用代碼：selectdbo.regexReplace(html,']*>(.|\n)*?','',1,1)
Example3：去除html標簽selectdbo.regexReplace('
Key Contact:
Mr Jack, Zhou
General Manager
Mr Adu, Ho
Marketing Director
Overseas Sales
MsWinny, Luo
Sales Manager
Overseas Sales',']*>','',1,0)
Example4：數據庫字段值替換updateBooks。