This is what I tried: -
update student_db.student set activities = (select i.activities from
-
client.student c, student_db.student s where c.unique_key =
-
s.unique_key);
-
ERROR 1093 (HY000): You can't specify target table 'student' for update
-
in FROM clause
-
mysql>
-
I just need to move all of the contents in client.student. activities to
student_db.stud ent.activities, how do I do that?
Thanx
Phil 2  3331 
<ph************ **@gmail.com> wrote in message
news:11******** **************@ g43g2000cwa.goo glegroups.com.. . I just need to move all of the contents in client.student. activities to
student_db.stud ent.activities, how do I do that?
MySQL versions 4.0 and later support an extension to SQL called multi-table
updates. You can do something analogous to a join, in an update statement.
This is not standard SQL, but imho it is so useful and sensible that it
should be!
Something like this should work (but I haven't tested it):
UPDATE student_db.stud ent, client.student
SET student_db.stud ent.activities = client.student. activities
WHERE student_db.stud ent.unique_key = client.student. unique_key
See http://dev.mysql.com/doc/refman/5.0/en/update.html for more info.
Regards,
Bill K.
That was perfect! I have never heard of this before, but thanx!
Phil
Bill Karwin wrote: <ph************ **@gmail.com> wrote in message
news:11******** **************@ g43g2000cwa.goo glegroups.com.. . I just need to move all of the contents in client.student. activities to
student_db.stud ent.activities, how do I do that?
MySQL versions 4.0 and later support an extension to SQL called multi-table
updates. You can do something analogous to a join, in an update statement.
This is not standard SQL, but imho it is so useful and sensible that it
should be!
Something like this should work (but I haven't tested it):
UPDATE student_db.stud ent, client.student
SET student_db.stud ent.activities = client.student. activities
WHERE student_db.stud ent.unique_key = client.student. unique_key
See http://dev.mysql.com/doc/refman/5.0/en/update.html for more info.
Regards,
Bill K. This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
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