>>>> 2013/06/17 11:38 +0430, Sayyed Mohammad Emami Razavi >>>>
update test set desc='test10' where id=1; 
<<<<<<<<
_That_ is UPDATE! It is the only means of changing, but neither inserting nor 
deleting, a record.

The other fields are left the same.

MySQL also tracks whether it is an actual change; this is reflected in the 
client message
Rows matched: ?  Changed: ?  Warnings: ?
. The number after "Changed:" is the number of records where the new value 
really differs from the old.


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