Click here to Skip to main content
15,889,116 members
Articles / Programming Languages / SQL

The Evil That is "Select *"

Rate me:
Please Sign up or sign in to vote.
4.33/5 (3 votes)
1 Aug 2011CPOL 12.5K  
It also limits SQL's ability to find a proper index to use, hence hindering performance. I wasn't aware of this aspect until a SQL consultant made mention of it. Unfortunately we haven't adopted the policy of dropping the *.

Views

Daily Counts

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Chief Technology Officer
United States United States
What I get paid or have been paid to do:
Sports data (NBA, NCAA)
Restaurant data - menus, locations, sales history, foot traffic, dwell time.
IOT - logistics and mining
Trading software and protocols (QuickFIX, Onix, etc).
Price feed development.
Trader simulation tools.
Back office, end of day reporting, NFA compliance.
Performance testing, optimization, and analysis.
Large scale data management, analysis, and visualization.
Worked with most major banks, some electronic exchanges, many data providors, and a few counter-parties:
MISO, PJM, NYISO, NEISO, CAISO, AESO, ERCOT, BOE, CME, CBOE, Eurex, ICE, Morgan Stanley, J.P. Morgan, RBS, EBS, Credit Suisse, Nomura, Barclays, Deutsche Bank, Citibank, UBS, Goldman Sachs, Bear Stearns (defunct), Triaina, Bloomberg
Experience in FX, energies, futures.

Comments and Discussions