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Postgresql: Conditionally unique constraint
...noted that this won't allow creating FKs referencig that partially unique field.
– ffflabs
Oct 30 '17 at 22:02
12
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How do I shutdown, restart, or log off Windows via a bat file?
... end up in the Event Log.
-y — Forces a "yes" answer to all shutdown queries.
Note: This option is not documented in any official documentation. It was discovered by these StackOverflow users.
I want to make sure some other really good answers are also mentioned along with this one. Here they...
Can someone explain mappedBy in JPA and Hibernate?
...Bois so mapped by come only into picture how to are creating your database,ie either u r using mappedby or not hibernate at java side behaves similar way.Is it?
– user4768611
Mar 4 '16 at 6:51
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SQL standard to escape column names?
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Quotation Mark "
The SQL:1999 standard specifies that double quote (") (QUOTATION MARK) is used to delimit identifiers.
<delimited identifier> ::= <double quote> <delimited identifier body> <double quote>
Oracle, PostgreSQL, MySQL, MSSQL and S...
How to wait in bash for several subprocesses to finish and return exit code !=0 when any subprocess
...it for all jobs in the background are completed.
If the -n option is supplied, waits for the next job to terminate and returns its exit status.
See: help wait and help jobs for syntax.
However the downside is that this will return on only the status of the last ID, so you need to check the status...
What is copy-on-write?
...ers to the same resource. This function can be maintained until a caller tries to modify its "copy" of the resource, at which point a true private copy is created to prevent the changes becoming visible to everyone else. All of this happens transparently to the callers. The primary advantage is that...
Firefox session cookies
Generally speaking, when given a cookie that has no expiration period, modern browsers will consider this cookie to be a 'session cookie', they will remove the cookie at the end of the browsing session (generally when the browser instance closes).
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Rollback to an old Git commit in a public repo
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I tried this but I don't think this is the proper way to do it cause it leaves stagnate files. This doesn't delete files that weren't in that last commit.
– David
Jan 5 '10 at 17:49
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Javascript Drag and drop for touch devices [closed]
...ue, true, window, 1,
touch.screenX, touch.screenY,
touch.clientX, touch.clientY, false,
false, false, false, 0, null);
touch.target.dispatchEvent(simulatedEvent);
event.preventDefault();
}
function init() {
document.addEventListener("touchstart", touchHandler, t...
Efficient way to insert a number into a sorted array of numbers?
...same for all values except negative numbers and numbers greater than 2^31 (ie, numbers with a 1 in the first bit).
– gilly3
Aug 2 '16 at 22:32
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