Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
Yeah, there are lots of good examples... I was just trying to come up with the very simplest query that would demonstrate the problem.

Honestly, single-table queries aren't likely to be all that problematic, no matter what. You do a full table-scan on a million-row table... well, that's 5 seconds you wish you hadn't spent, but it's not gonna totally kill you, unless it is being hit with great frequency. It's really when you get into large, complicated plans involving lots of joins and various other nasties, that tuning gets to be really critical (except, of course, for very frequently accessed queries).

Somebody could write a whole book on database tuning... oh, wait... several people already have :-P


------------
:Wq
Not an editor command: Wq

In reply to Re: Re: Re: Use Placeholders. For SECURITY and (sometimes) for PERFORMANCE by etcshadow
in thread Use Placeholders. For SECURITY and (sometimes) for PERFORMANCE by jZed

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others imbibing at the Monastery: (6)
As of 2024-03-28 20:13 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found