Phil Schwarzmann wrote:
So let's say Bill is accessing a MySQL table and is about to UPDATE some
information on a particular row. Meanwhile, Al is doing a sort on that
same table.
Couldn't Al's sorting possibly screw up Bill's updating?? Or does
MySQL have some built in functions that prevent this?
Thanks!
Phil
This is really better suited to the mysql list but anyway -
In your case If Al started the sort first the update would wait until
the select is finished for the update.
MYsql has this wonderful feature called table locking - so an update
needs to lock the table preventing access to it.
So your data wont get stuffed, you'll just get the typical MYsql
slowness when you've got a lot of updating and reading going on.
You need not suffer this get a database that doesn't block readers (eg
Al wanting to read the table while bill updates it) use something
like Postgresql (postgresql.org) or Fierbird (firebirdsql.org) both are
free.
Or you could use INNodb tables in MYsql as they don't block readers
either. But MYsql is missing a lot of basic stuff like sub selects so if
you have a choice dump MYsql.
MYsql is not noted for its performance with a lot of concurrent
connections.
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