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What is causing ERROR: there is no unique constraint matching given keys for referenced table?
...so in your bar table you must have a unique (name) index.
See also http://www.postgresql.org/docs/9.1/static/ddl-constraints.html#DDL-CONSTRAINTS-FK and specifically:
Finally, we should mention that a foreign key must reference columns
that either are a primary key or form a unique constraint...
Commonly accepted best practices around code organization in JavaScript [closed]
...enough to warrant it, I separate it out into its own file. Using a tool to combine all you files for production is an excellent idea as well.
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How does the bitwise complement operator (~ tilde) work?
Why is it that ~2 is equal to -3? How does ~ operator work?
15 Answers
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MySQL - SELECT WHERE field IN (subquery) - Extremely slow why?
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Subqueries vs joins
http://www.scribd.com/doc/2546837/New-Subquery-Optimizations-In-MySQL-6
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Are unused CSS images downloaded?
...ing example:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<title>test</title>
<style type="text/css">
.unused {
background: url(unused.png) no-repeat;
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What are the benefits of using C# vs F# or F# vs C#? [closed]
I work for a tech company that does more prototyping than product shipment. I just got asked what's the difference between C# and F#, why did MS create F# and what scenarios would it be better than C#.
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iOS - Dismiss keyboard when touching outside of UITextField
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Returning a C string from a function
...me);
return szBuffer;
}
That is, your program will crash because the compiler (may/may not) have released the memory used by szBuffer by the time the printf() in main() is called. (Your compiler should also warn you of such problems beforehand.)
There are two ways to return strings that won't...
Why is printing to stdout so slow? Can it be sped up?
I've always been amazed/frustrated with how long it takes to simply output to the terminal with a print statement. After some recent painfully slow logging I decided to look into it and was quite surprised to find that almost all the time spent is waiting for the terminal to process the results.
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How to trigger a build only if changes happen on particular set of files
...egexes to determine whether to skip building based on whether files in the commit match the excluded region regex.
Unfortunately, the stock Git plugin does not have a "included region" feature at this time (1.15). However, someone posted patches on GitHub that work on Jenkins and Hudson that implem...