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Powershell Day 24

Day 24 Performance Monitor  Sql Performance:  ? performance counters  sys.dm_os_performance_counters ? Top ten queries from sys.dm_exec_query_stats and sys.dm_exec_sql_text ? Processor: sys.dm_os_schedulers ?Memory : sys.dm_os_memory_clerks...

2011-04-24

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The Empty Aggregate

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Question of the Day

The Empty Aggregate

I have this table in a SQL Server 2025 database: 

CREATE TABLE [dbo].[CustomerOrder]
(
[OrderID] [int] NULL,
[CustomerID] [int] NULL,
[total] [money] NULL
) ON [PRIMARY]
GO
What is returned from this code? (answers are for the sum and then the count) 
SELECT SUM(total) AS sum,
       COUNT(total) AS count
FROM dbo.CustomerOrder;

See possible answers