如果select后面跟distinct之类的关键字,STRAIGHT_JOIN需要跟在关键字后面。 除了可以改变join的方式之外,impala hint还支持一些其他的功能,这里就不再过多描述,感兴趣的同学可以参考官方文档:https://www.cloudera.com/documentation/enterprise/5-11-x/topics/impala_hints.html。
The leading field defines the basic unit of date or time being measured. The trailing field defines the smallest increment of the basic unit being considered. For example, a YEAR TO MONTH interval considers an interval of years to the nearest month. A DAY TO MINUTE interval considers an ...
Master SQL interview with these essential questions and answers. Covering everything from basic to advanced topics, this guide will help you prepare thoroughly
2.1 Migration: Basic Options and Steps To migrate all or part of a third-party database to Oracle, you have the following basic options: Migrating Using the Migration Wizard Copying Selected Tables to Oracle However, before you perform any migration actions, you may want to prepare by ...
SQL does not consolidate duplicate groups generated for a GROUPING SETS list. For example, in GROUP BY ( (), CUBE (Country, Region) ), both elements return a row for the grand total and both rows will be listed in the results. GROUP BY () Specifies the empty group, which generates th...
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In-Memory OLTP isn't supported in the General Purpose, Standard, and Basic service tiers of Azure SQL Database. Therefore, it isn't possible to scale orrestorea database that has any In-Memory OLTP objects to one of these tiers. If you want to scale a database to one of these servic...
I recently visited a customer onsite and presented to them topics on SQL Server 2016. After the... Date: 04/21/2017 SQL Server On Linux: Core-minidumps and Breakpad As pointed out in my previous post, debugging on Linux brings a few new twists to those of us used... Date: 03/27/...
For SQL Server Product Terms, Product List details, licensing briefs, and other information on Microsoft Commercial Licensing topics, visit http://www.microsoft.com/licensing/about-licensing/product- licensing.aspx. For a list of dependent licenses required for SQL Server under the terms ...
For a list of supported metrics, seeSupported metrics - Microsoft.Sql/servers/databases CategoryCategory display nameLog tableSupports basic log planSupports ingestion-time transformationExample queriesCosts to export AutomaticTuningAutomatic tuningAzureDiagnostics ...