我正在按照 Azure 门户中的查询见解边栏选项卡的建议向 SQL Azure 数据库添加新索引,该边栏选项卡使用ONLINE=ON
标志。SQL 看起来像这样:
CREATE NONCLUSTERED INDEX [IX_MyIndex] ON
[Customers].[Activities] ([CustomerId])
INCLUDE ([AccessBitmask], [ActivityCode], [DetailsJson],
[OrderId], [OperationGuid], [PropertiesJson], [TimeStamp])
WITH (ONLINE = ON)"
但是,我们还需要将相同的索引添加到本地开发数据库中,这些数据库只是不支持ONLINE=ON
选项的localdb
实例,从而导致以下错误。
Online index operations can only be performed in Enterprise edition of SQL Server.
我的问题是 - 有没有办法编写这个 SQL 索引创建语句,该语句将使用ONLINE=ON
(如果可用(,但在不支持它的数据库上仍然成功?
你可以使用这样的东西:
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;