Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

Freezer:

I used commonly-used[1] SQL constructs, so[2] it should be just fine. I used MySQL about 10 years ago, and I seem to recall that it was fairly standard SQL, so I would expect it to work. (Most of the things I remember as lacking (such as nested queries) were added to MySQL years ago.)

I only mentioned Oracle to let you know that I'm not current on MySQL and that you *might* need to tweak it.

However, as Corion mentioned in his initial response, there's no substitute for using indexes, benchmarking and any statement analysis feedback your database offers. After all, how the database decides to execute your SQL statement may be markedly different than what you might imagine. For example, I *expect* that the comparison / length / substring may be faster than like. But I have no idea what MySQL's opinion may turn out to be.

Update: Updated in response to AM's reply. Thanks! [1] I changed "standard SQL" to "commonly-used SQL", and [2] removed "if MySQL uses standard SQL".

...roboticus

When your only tool is a hammer, all problems look like your thumb.


In reply to Re^3: s/Perl/SQL/ ? by roboticus
in thread s/Perl/SQL/ ? by Freezer

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



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • Outside of code tags, you may need to use entities for some characters:
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

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

    How do I use this? | Other CB clients
    Other Users?
    Others taking refuge in the Monastery: (6)
    As of 2014-12-28 05:15 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      Is guessing a good strategy for surviving in the IT business?





      Results (178 votes), past polls