I've never used a lock on a MySQL table so far, but need one now. Two questions:
1. Do I set the lock by a normal query, but in the form of "LOCK TABLE <tablename> WRITE", instead of "SELECT * FROM <tablename> WHERE x = 1"?
2. Can I set the lock in one query, then perform multiple other queries on the table, in between which I do some PHP work, and then release the lock several queries and lines of PHP code later?
In general, when is it wise to use a lock, and when is it uneeded?
-- anders thoresson
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