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delete_all vs destroy_all?

... 247 You are right. If you want to delete the User and all associated objects -> destroy_all How...
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How do negated patterns work in .gitignore?

... | edited May 12 '10 at 15:55 answered May 12 '10 at 15:31 ...
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How to set an iframe src attribute from a variable in AngularJS

... 362 I suspect looking at the excerpt that the function trustSrc from trustSrc(currentProject.url) is...
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Conditional formatting based on another cell's value

...ou refer to one specific cell. This is supported in Google Sheets as of 2015: https://support.google.com/drive/answer/78413#formulas In your case, you will need to set conditional formatting on B5. Use the "Custom formula is" option and set it to =B5>0.8*C5. set the "Range" option to B5. s...
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MySQL ON DUPLICATE KEY - last insert id?

... Check this page out: https://web.archive.org/web/20150329004325/https://dev.mysql.com/doc/refman/5.0/en/insert-on-duplicate.html At the bottom of the page they explain how you can make LAST_INSERT_ID meaningful for updates by passing an expression to that MySQL function. F...
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Twitter bootstrap scrollable table

... 243 Table elements don't appear to support this directly. Place the table in a div and set the hei...
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How to assign an exec result to a sql variable?

...ter: CREATE PROCEDURE YourStoredProcedure ( @Param1 int ,@Param2 varchar(5) ,@Param3 datetime OUTPUT ) AS IF ISNULL(@Param1,0)>5 BEGIN SET @Param3=GETDATE() END ELSE BEGIN SET @Param3='1/1/2010' END RETURN 0 GO call to the stored procedure, with an OUTPUT parameter:...
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Database development mistakes made by application developers [closed]

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How to get just the parent directory name of a specific file

... | edited Feb 2 '13 at 21:49 answered Nov 19 '11 at 20:39 ...
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jQuery .on('change', function() {} not triggering for dynamically created inputs

... 276 You should provide a selector to the on function: $(document).on('change', 'input', function(...