15,917,321 members
Sign in
Sign in
Email
Password
Forgot your password?
Sign in with
home
articles
Browse Topics
>
Latest Articles
Top Articles
Posting/Update Guidelines
Article Help Forum
Submit an article or tip
Import GitHub Project
Import your Blog
quick answers
Q&A
Ask a Question
View Unanswered Questions
View All Questions
View C# questions
View C++ questions
View Javascript questions
View Visual Basic questions
View Python questions
discussions
forums
CodeProject.AI Server
All Message Boards...
Application Lifecycle
>
Running a Business
Sales / Marketing
Collaboration / Beta Testing
Work Issues
Design and Architecture
Artificial Intelligence
ASP.NET
JavaScript
Internet of Things
C / C++ / MFC
>
ATL / WTL / STL
Managed C++/CLI
C#
Free Tools
Objective-C and Swift
Database
Hardware & Devices
>
System Admin
Hosting and Servers
Java
Linux Programming
Python
.NET (Core and Framework)
Android
iOS
Mobile
WPF
Visual Basic
Web Development
Site Bugs / Suggestions
Spam and Abuse Watch
features
features
Competitions
News
The Insider Newsletter
The Daily Build Newsletter
Newsletter archive
Surveys
CodeProject Stuff
community
lounge
Who's Who
Most Valuable Professionals
The Lounge
The CodeProject Blog
Where I Am: Member Photos
The Insider News
The Weird & The Wonderful
help
?
What is 'CodeProject'?
General FAQ
Ask a Question
Bugs and Suggestions
Article Help Forum
About Us
Search within:
Articles
Quick Answers
Messages
Comments by giadich (Top 2 by date)
giadich
2-Aug-11 13:59pm
View
Deleted
Yes, there is a way. I just can't recall that now... I haven't been doing much work with SQL these days.
giadich
2-Aug-11 12:39pm
View
Deleted
Select * isn't okay if you only want the whole table schema.
Back in the days when I was still new at [the company] and doing data analyst (with a little background in programming) work, one of the application keeps getting slower and slower by the week. Every time we loaded some data into SQL, it would take longer to run the app - from 1 minute to 5 minutes then 10 minutes... I was so frustrated and started to dig into the code and found the culprit - "Select *".
It turned out, one of our programmers wanted to get the schema of the table and used Select * to retrieve it. That is okay if the table is small but if your table is growing constantly then this will be a huge problem.
After discovering the problem, I changed the code to Select Top 0 * and the problem was gone and the app ran faster than ever. So if you really want to get the schema of the table and do not know it before hand and need to used Select *, make sure you limit the number of rows returned.