Edward Pochinski


Technical Article

sp_dba_checkblocked fix for sp_NotifyBlock

Problems with error 512 more than 1 result returned due to the operator outside of the query. Found this when tested with multiple blocks going on at once. It worked fine when there was only 1 block. Depending on the type of server there can be a "whole lot of blocking going on "Replaced with […]

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2002-01-01

844 reads

Technical Article

OSQL Process Watcher

These 2 files plus sleep.exe (Resource kit) gives an administrator a good view of important blocking statistics in almost a real time fashion. You can use this with profiler to obtain some unique information very fast on a lead blocker if your gathering the right counters in profiler and dumping them in a table and […]

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2001-12-10

586 reads

Technical Article

Script to Zip a Backup File

A handy dandy proc that can be used to zip up a backup file to location specified. Also called from a backup script to automate the compression of all backups using PKZip command line utility. Make sure pkzip is in the path and found by the shell prior to using this script.

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2001-08-20

3,740 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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