Technical Article

Function to Return the Amount of Children in a Tree

Assuming we have the following table (that stores hierarchical data)  :CREATE TABLE [staff] (    [employee] [int] NOT NULL ,    [employee_name] [varchar] (10) NULL ,    [supervisor] [int] NULL ,     PRIMARY KEY  CLUSTERED     (        [employee]    )  ON [PRIMARY] ,     FOREIGN KEY     (        [supervisor]    ) REFERENCES [staff] (        [employee]    ))I ‘ll built a […]

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2002-08-23

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Technical Article

Alert When Not Enough Free Disk Space

--Implement an Alert Which Trigger when Specified Disks--free space exceeds a specified alert level--Steps to implement:--1) Define a Custom Error Message with messsage text (The ---drive free space is bellow alert level. Details: %s)--2) Define an Alert linked to CEM defined at step 1--3) Implement a Job which execute the following step in a recurring […]

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2002-06-04

2,688 reads

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Question of the Day

The Funny SELECTs

What is returned from this query?

SELECT
  ( SELECT COUNT (*) FROM Sales.SalesOrderHeader AS soh
    WHERE soh.OrderDate > '01/01/2011' AND soh.OrderDate < '01/01/2012') AS OrdersIn2000
, ( SELECT COUNT (*) FROM Sales.SalesOrderHeader AS soh
    WHERE soh.OrderDate > '01/01/2012' AND soh.OrderDate < '01/01/2013') AS OrdersIn2001
, ( SELECT COUNT (*) FROM Sales.SalesOrderHeader AS soh
    WHERE soh.OrderDate > '01/01/2013' AND soh.OrderDate < '01/01/2014') AS OrdersIn2002;

See possible answers