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MySQL: Invalid use of group function

...!= b.sid GROUP BY a.pid Which I believe should return only rows where at least two rows exist with the same pid but there is are at least 2 sids. To make sure you get back only one row per pid I've applied a grouping clause. ...
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How to set the font style to bold, italic and underlined in an Android TextView?

... I checked it in 2.1. So at least it should work from 2.1 and above – Andro Selva Oct 14 '12 at 2:03 1 ...
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What does JVM flag CMSClassUnloadingEnabled actually do?

...fact, this is what happens when you do a hot redeploy of a webapp. (Or at least, that's what should happen, if you can avoid the problems that lead to a permgen storage leak.) share | improve this ...
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How to concatenate strings of a string field in a PostgreSQL 'group by' query?

... How about using Postgres built-in array functions? At least on 8.4 this works out of the box: SELECT company_id, array_to_string(array_agg(employee), ',') FROM mytable GROUP BY company_id; share ...
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What platforms have something other than 8-bit char?

...ovide one, instead of silently using a size you didn't expect. At the very least, if I hit a case where I had a good reason to assume it, then I'd assert it. share | improve this answer | ...
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What is a “batch”, and why is GO used?

...rop a table and re-create the same-named table in a single transaction, at least in Sybase (ditto for creating procedures/triggers): > drop table tempdb.guest.x1 > create table tempdb.guest.x1 (a int) > go Msg 2714, Level 16, State 1 Server 'SYBDEV', Line 2 There is alrea...
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Ignore with CSS?

...P). And the answer to this is, that it is not possible with <br>, at least not cross-browser. So I showed an alternative. – Netsurfer Feb 8 '14 at 14:22 2 ...
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What does $$ mean in the shell?

... file for something, you ought to be using a better language which will at least let you add the "exclusive" flag for opening (creating) the file. Then you can be sure you're not clobbering something else. share | ...
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'Microsoft.SqlServer.Types' version 10 or higher could not be found on Azure

... @Yovav, at least you're running in a floppy disk I don't think that 2 MB of binary data have any influence in the performance of your application. I suggest you to run a benchmark and let us know (with real data) the impact in the CPU. ...
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RegEx to parse or validate Base64 data

... or is not base64, chances are you are not interested in empty strings. At least i know i am not. – njzk2 Aug 22 '11 at 13:19 4 ...