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If table exists drop table then create it, if it does not exist just create it

...up the old table, obviously. Wrapping all statements with something like SELECT GET_LOCK('__upgrade', -1); ... DO RELEASE_LOCK('__upgrade'); allows to just invoke all statements sequentially without error checking, but I don't think it's a good idea: complexity increases and locking functions in M...
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SQL-Server: Error - Exclusive access could not be obtained because the database is in use

...WITH REPLACE) in optoins tab at left hand side. Uncheck all other options. Select source and destination database. Click ok. That's it. share | improve this answer | follow...
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disable textbox using jquery?

...y.com/attr/ To retrieve and change DOM properties such as the checked, selected, or disabled state of form elements, use the .prop() method. $("#radiobutt input[type=radio]").each(function(i){ $(this).click(function () { if(i==2) { //3rd radiobutton $("#textbox1").prop("disabled"...
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What's the difference between IQueryable and IEnumerable

...to execute the entire query against the underlying data source (like using SELECT TOP 1 in SQL). See: The .NET Standard Query Operators share | improve this answer | foll...
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How to compile a 64-bit application using Visual C++ 2010 Express?

... dialog box there will be a "Configuration" drop-down menu. Make sure that selects "All Configurations." There will also be a "Platform" drop-down that will read "Win32." Finally on the right there is a "Configuration Manager" button - press it. In the dialog that comes up, find your project, hit th...
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Why and not taking font-family and font-size from body?

...es if you want to change their font/text styles - should be easy enough by selecting them though, as you've just done. As far as I know, only form elements are affected. Off the top of my head: input, button, textarea, select. ...
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How to verify an XPath expression in Chrome Developers tool or Firefox's Firebug?

... In "Elements" panel, press Ctrl+F In the search box, type in XPath or CSS Selector, if elements are found, they will be highlighted in yellow. Firefox (since version 75) Since FF 75 it's possible to use raw xpath query without evaluation xpath expressions, see documentation for more info. Fir...
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Visual Studio, debug one of multiple threads

...ow (Debug -> Windows -> Threads) right-click the thread you want and select "switch to thread". You can also choose "freeze" on the threads you don't want to debug in order to keep them from running. Don't forget to "thaw" them if you expect them to do work, however. Further reading. ...
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Remote connect to clearDB heroku database

... In heroku website, go to My Apps and select the app on which you have installed ClearDB. On the top corner click on Addons and then select ClearDB MySQL Database. Once there, click on your database and choose the 'Endpoint Information' tab. There you see your ...
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More elegant “ps aux | grep -v grep”

... @kxsong: | grep '[t]erminal' selects any line containing the word 'terminal' without putting the word 'terminal' into the process list. What are you trying to achieve with | grep '[r]oot' and how is it not working? There is likely to be a better solution...