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Database development mistakes made by application developers [closed]

... the log output from Hibernate and you'll see all the queries begin with: SELECT DISTINCT ... This is a bit of a shortcut to ensuring you don't return duplicate rows and thus get duplicate objects. You'll sometimes see people doing this as well. If you see it too much it's a real red flag. Not...
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Delete all the queues from RabbitMQ?

...oto Policies tab(on the right side) Add Policy Fill Fields Virtual Host: Select Name: Expire All Policies(Delete Later) Pattern: .* Apply to: Queues Definition: expires with value 1 (change type from String to Number) Save Checkout Queues tab again All Queues must be deleted And don't forget remo...
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How to apply unmerged upstream pull requests from other forks into my fork?

...ew pull request The pending pull request(s) should be offered. Remember to select proper OtherFork branch too. Select on the left side as the base fork your fork (MyFork) (IMPORTANT). Now the option of View pull request should change to Create pull request. Click this. Now you should have a pending...
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How do I get the n-th level parent of an element in jQuery?

... this will not work for multiple element selections, a safer way would be: $('.element').first().parents().eq(num); – zzzzBov Aug 17 '11 at 13:44 ...
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How to execute IN() SQL queries with Spring's JDBCTemplate effectivly?

...ters.addValue("ids", ids); List<Foo> foo = getJdbcTemplate().query("SELECT * FROM foo WHERE a IN (:ids)", parameters, getRowMapper()); This only works if getJdbcTemplate() returns an instance of type NamedParameterJdbcTemplate ...
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How to get a one-dimensional scalar array as a doctrine dql query result?

...as callback, instead of writing a closure. $result = $em->createQuery("SELECT a.id FROM Auction a")->getScalarResult(); $ids = array_map('current', $result); See Petr Sobotka's answer below for additional info regarding memory usage. PHP >= 5.5 As jcbwlkr's answered below, the rec...
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Cannot find Dumpbin.exe

... Search for "command prompt" in the start menu, which brings up a selection of command prompts. Look for "Visual C++" or "Developer Studio" command prompts. – edW Feb 17 '19 at 23:26 ...
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Eclipse add Tomcat 7 blank server name

...at 7 in my Eclipse in Ubuntu. When I click "Add new server" in Eclipse and select "Tomcat v7.0 Server", the field "Server Name" is blank and I cannot type in anything in that textbox as shown below: ...
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Sourcetree - undo unpushed commits

...click on the commit you like to reset to (not the one you like to delete!) Select "Reset master to this commit" Select "Soft" reset. A soft reset will keep your local changes. Source: https://answers.atlassian.com/questions/153791/how-should-i-remove-push-commit-from-sourcetree Edit About git r...
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Use didSelectRowAtIndexPath or prepareForSegue method for UITableView?

... I'll have to pass a couple objects to the detail view. But do I use didSelectRowAtIndex or -(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender ? ...