On 14.02.2012 10:20, Alex Schaft wrote:
Hi,
I need to update a table along the lines of the following
update table set LastUpdate=now(), UpdateSource='Abc' Where Key1 =
'Def'
and Key2 = 'ghi'
I need to possible do anywhere from 2 to 20 of these. Would it be
better
to call an update statement for each of these,
What exactly are "these"? Is 'Abc' constant for all rows, or does it
change for each Key1&Key2 value?
If so, then simply
WHERE (Key1=... AND Key2=...) OR (Key1=... AND Key2=...) OR... should
suffice
or even:
WHERE (Key1, Key2) IN (val1, val2),(val3,val4), ...
If 'Abc' changes per Key1&Key2 values, explore the CASE statement.
Best,
/ Carsten
--
MySQL General Mailing List
For list archives: http://lists.mysql.com/mysql
To unsubscribe: http://lists.mysql.com/mysql
