MySQL 5.1 Command line client improvements
Posted by peter
Just found this little handy feature today:
SQL:
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mysql> INSERT INTO c SELECT rand()*1000, sha1(rand()) FROM c;
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Query aborted BY Ctrl+C
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ERROR 1317 (70100): Query execution was interrupted
So now if you press CTRL-C MySQL Command Line Client will not exit but will terminate query being executed. This is great as so many queries assumed CTRL-C would also abort running query in previous MySQL versions and I've seen many monstrous queries left running without noticing just because people would think CTRL-C terminated the query. Now it finally really does.
Great Job! I wish I would see more of such relatively simple but very handy improvements 
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11 Comments
This was introduced in 5.0.25 (and 5.1.10).
http://dev.mysql.com/doc/refman/5.0/en/news-5-0-25.html
Comment :: June 16, 2007 @ 4:37 pm
i did that.
Comment :: June 16, 2007 @ 5:36 pm
I helped with it
Comment :: June 16, 2007 @ 5:46 pm
that’s right! i forgot that what i did was based on harrison’s initial patch.
Comment :: June 16, 2007 @ 6:33 pm
Thanks Jim, Harrison, Paul
It may have been where for a while I just somehow did not notice it before
Comment :: June 17, 2007 @ 9:06 am
I agree: great feature! Very helpful.
Comment :: June 17, 2007 @ 9:44 pm
You guys rock! It’s very handy. Using that you can even do a select and an insert in the same query from the same table. It randomly messes up the MYI files, though (which can be repaired by table repair command). It would be great if it didn’t.
I did something like this :
insert into table1 (id, serial_no) select ‘asd’ as id, count(name) as serial_no from where category=’blah’
Comment :: June 18, 2007 @ 9:13 am
It won’t let me edit my comment so I am posting a new one. I had an error in the query I posted. Here is the right one :
insert into table1 (id, serial_no) select ‘asd’ as id, count(name) as serial_no from table1 table1_1 where category=’blah’
Comment :: June 18, 2007 @ 9:14 am
Moazzam,
Please report it as a but KILL for the query should not cause data corruption. It would be OK to abort the query and have partially executed insert for MyISAM tables but if index gets corrupted it is surely a bug.
Comment :: June 18, 2007 @ 11:45 am
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