Scripts

Technical Article

SQL Mail Stop and Start

Since SQL Mail periodically stops working and the simplefix is to stop and start it, this script does just that.It can be scheduled to run as a task as often as desiredusing an ISQL command (e.g. isql -U sa -P  -i "e:\dba\mailstopstart.sql" -o "e:\dba\mailstopstart.out")or as a stored procedure.  It has been tested on SQL 6.5 […]

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2002-05-16

1,216 reads

Technical Article

Get total file size of backup for last full backup

The information for backup size is stored in the backup_size column of the backupset table in the msdb database as the total bytes for that backup. This script allow you to look at the total back to tape or file so you can plan space needs for those devices. This is a simple piece of […]

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2002-05-14

4,663 reads

Technical Article

Procedure for Random Numbers

Here is handy procedure to generate random number.I find it useful when I generate large amount of test data in a database.For example if you need to create a Customer Data and what they have purchased in the last month to run perfrmance tests on large amount of data an set up necessary indexes.You can […]

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2002-05-13

708 reads

Technical Article

Parse a delimited string, return n-th value

This UDF will parse a string delimited by the character you specify and return the value in the n-th position you requested.Example:select dbo.fn_parse('this string', ' ', 1) --> 'this'select dbo.fn_parse('this string', ' ', 2) --> 'string'select dbo.fn_parse('this string', ' ', 3) --> NULLselect dbo.fn_parse('this  string', ' ', 2) --> ''

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2002-05-10

519 reads

Technical Article

Retrieve default value for parameter in procedure

This procedure will return DEFAULT value for the parameter in the stored procedure. Usage: Use pubs go declare @Value varchar(30) exec _GetParamDefault 'random_password','@password_type',@value OUTPUT SELECT @VALUE Also accepts different versions, by default, if not specified, first version info retrieved. exec _GetParamDefault 'random_password;2','@password_type',@value

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2002-05-10

362 reads

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ORDER BY alias

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Question of the Day

ORDER BY alias

There is a table tmp_tab:

CREATE TABLE tmp_tab (
id int,
val int
);
INSERT INTO tmp_tab VALUES
(1, 1),
(2, NULL),
(3, 3),
(4, 4),
(5, 5);
You want to order the rows ids by the following expression:
    ISNULL(val, id) + 1
Which of the following queries produces the expected ordering and why? (Select all correct)

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