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How do I find a “gap” in running counter with SQL?

I'd like to find the first "gap" in a counter column in an SQL table. For example, if there are values 1,2,4 and 5 I'd like to find out 3. ...
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psql: FATAL: role “postgres” does not exist

...not have any login password. Check this site for more articles like this: https://medium.com/@Nithanaroy/installing-postgres-on-mac-18f017c5d3f7 share | improve this answer | ...
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How to detect page zoom level in all modern browsers?

...e zoom level. Edit (2011-12-12): I've added a project that can be cloned: https://github.com/tombigel/detect-zoom IE8: screen.deviceXDPI / screen.logicalXDPI (or, for the zoom level relative to default zoom, screen.systemXDPI / screen.logicalXDPI) IE7: var body = document.body,r = body.getBoundin...
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When to use volatile with multi threading?

... etc. One note in the standard even points the connection to hardware: http://eel.is/c++draft/intro.races#19 [ Note: The four preceding coherence requirements effectively disallow compiler reordering of atomic operations to a single object, even if both operations are relaxed loads. This ef...
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makefile:4: *** missing separator. Stop

This is my makefile: 10 Answers 10 ...
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What is the default location for MSBuild logs?

... documentation is pretty clear about this (And you ain't gonna like it!): https://msdn.microsoft.com/en-us/library/jj651643.aspx Where it says: To create a build log file for a managed-code project On the menu bar, choose Build, Build Solution. In the Output window, highlight the inf...
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Remove all whitespace in a string

I want to eliminate all the whitespace from a string, on both ends, and in between words. 10 Answers ...
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What's the difference between ISO 8601 and RFC 3339 Date Formats?

...etter just reading the document for yourself in the event you're worried: http://tools.ietf.org/html/rfc3339 share | improve this answer | follow | ...
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Detect the specific iPhone/iPod touch model [duplicate]

... Most complete UIDevice (Hardware) category probably is http://github.com/erica/uidevice-extension/ (by Erica Sadun): [[UIDevice currentDevice] platformType] // ex: UIDevice4GiPhone [[UIDevice currentDevice] platformString] // ex: @"iPhone 4G" ...
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General guidelines to avoid memory leaks in C++ [closed]

What are some general tips to make sure I don't leak memory in C++ programs? How do I figure out who should free memory that has been dynamically allocated? ...