At 11:09 am -0500 3/2/06, sheeri kritzer wrote:
>The manual is large and vast, I couldn't find the text you quoted on
>the page I sent. What page did you find that text on?
It's the latter part of the second sentence from the same paragraph that you
quoted in your e-mail.
>As well, if the key th
The manual is large and vast, I couldn't find the text you quoted on
the page I sent. What page did you find that text on?
As well, if the key that EXPLAIN uses is multi-part, you would know
from the length of the fields. You have to use some deductive
reasoning, but I don't think it's really mur
'That other statement' that I quoted is actually just part of the paragraph
from the manual that you quoted!
My point was that it doesn't say what units the key length is given in or
explain _how_ to determine the number of parts used. However the more I think
about it the more I see that it mu
according to:
http://dev.mysql.com/doc/refman/5.0/en/explain.html
"The key_len column indicates the length of the key that MySQL decided
to use. The length is NULL if the key column says NULL. Note that the
value of key_len enables you to determine how many parts of a
multiple-part key MySQL actu
According to the manual "the value of key_len enables you to determine how
many parts of a multiple-part key MySQL actually uses."
However, it doesn't specify quite how one can determine that. It _looks_ like
the number of bytes in the key (or key part) that is used - is that correct?
TIA,
Ja