Hi Rick,

Isn't the use of ALL redundant when using the FOR scope in a REPLACE statement 
as the FOR scope will force the replace to evaluate each row, right? Unless you 
use FOR with REST? What is the locking scheme under those conditions - header 
or record?

--
rk

-----Original Message-----
From: [email protected] [mailto:[email protected]] On 
Behalf Of Rick Schummer
Sent: Wednesday, April 25, 2012 2:49 PM
To: [email protected]
Subject: RE: lockng issues

>> REPLACE post_date WITH date() FOR post_date <> date() ALL in 
>> YourTableName<<

Two comments:

1) REPLACE ALL places a header lock, where SCAN...ENDSCAN and REPLACE uses 
record locking

2) Depending on the time of the process (around midnight), it is entirely 
possible your use of DATE() could produce different dates using this one 
command. If all the dates being the same are important you should get the date 
to a memvar and use that in the replace.

Rick
White Light Computing, Inc.

www.whitelightcomputing.com
www.swfox.net
www.rickschummer.com



[excessive quoting removed by server]

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