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Thread: locking a row
02-19-2013, 11:36 PM #1
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locking a row
im considering locking one row to a table so that the table will always have a default value.
im sure i can lock the table itself, and i know i can just use php to find the value and reject any delete query, but can i lock a single row id so that it cannot be removed just in the table config itself?
Last edited by durangod; 02-20-2013 at 02:16 AM.
02-20-2013, 01:36 AM #2
Short answer: No.
There are ways to accomplish row locking, but they only last so long as the connection to the DB is maintained. So you couldn't maintain a connection very well from PHP. You'd have to do it from, say, a command line window where you never closed the window.
A better way to do this is probably to use a VIEW or STORED PROCEDURE. (Besides, DB purists will urge you to do *ALL* web-based work on the DB via one of those and *NEVER* make ad hoc SQL queries!)
Your VIEW or PROC simply provides a default record if no record is found.An optimist sees the glass as half full.
A pessimist sees the glass as half empty.
A realist drinks it no matter how much there is.
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