I have two tables with identical schema. And lots of columns!
I can update a record from the corresponding table by doing
update t1
join t2 on t2.id=t1.id
set t1.column1=t2.column1,
t1.column2=t2.column2...
where t2.columnx > 123;
But I have a ton of fields and am by nature, a lazy bastard who'd rather shave a yak and post on SE than type out a list of columns (possibly missing 1).
Other than some funky solution that writes out the column list to a text file etc, is there valid mySQL syntax that skips the explicit listing of all the columns and works more like INSERT...SELECT?
REPLACE INTO t1 SELECT * FROM t2 WHERE columnx>123;
Try to use REPLACE INTO ... SELECT ...
syntax http://dev.mysql.com/doc/refman/5.0/en/replace.html
REPLACE INTO t1 SELECT t2.* FROM t2, t1 WHERE t1.columnx>123 AND t1.id=t2.id;
Warning! Not tested!
This code would work only if tables have unique indexes on id
columns.
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