如何在线创建非聚集索引(如果可用) [英] How to create nonclustered index with online if available

问题描述

我正在按照Azure门户中的查询见解刀片服务器的建议将新索引添加到SQL Azure数据库，该刀片服务器使用 ONLINE = ON 标志.SQL看起来像这样:

I'm adding a new index to a SQL Azure database as recommended by the query insights blade in the Azure portal, which uses the ONLINE=ON flag. The SQL looks something like this:

CREATE NONCLUSTERED INDEX [IX_MyIndex] ON 
       [Customers].[Activities] ([CustomerId]) 
   INCLUDE ([AccessBitmask], [ActivityCode], [DetailsJson], 
       [OrderId], [OperationGuid], [PropertiesJson], [TimeStamp]) 
   WITH (ONLINE = ON)"

但是，我们还需要将此相同的索引添加到本地开发数据库中，它们只是不支持 ONLINE = ON 选项的 localdb 实例，出现以下错误.

However, we also need to add this same index to our local development databases, which are just localdb instances that don't support the ONLINE=ON option, resulting in the following error.

Online index operations can only be performed in Enterprise edition of SQL Server.

我的问题是-有没有一种方法可以编写此SQL索引创建语句，该语句将使用 ONLINE = ON (如果可用)，但在不支持该操作的数据库上仍会成功支持吗?

My question is - is there a way to write this SQL index creation statement that will use ONLINE=ON if available, but still succeed on databases that don't support it?

推荐答案

您可以使用以下内容:

DECLARE @Edition NVARCHAR(128);
DECLARE @SQL NVARCHAR(MAX);

SET @Edition = (SELECT SERVERPROPERTY ('Edition'));

SET @SQL = N'
CREATE NONCLUSTERED INDEX [IX_MyIndex] ON 
       [Customers].[Activities] ([CustomerId]) 
   INCLUDE ([AccessBitmask], [ActivityCode], [DetailsJson], 
       [OrderId], [OperationGuid], [PropertiesJson], [TimeStamp]) 
'

IF @Edition LIKE 'Enterprise Edition%' OR @Edition LIKE 'SQL Azure%' BEGIN
    SET  @SQL = @SQL + N' WITH (ONLINE = ON)';
END; 

EXEC sp_executesql @SQL;

这篇关于如何在线创建非聚集索引(如果可用)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！