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PSQLException: current transaction is aborted, commands ignored until end of transaction block
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I got this error using Java and PostgreSQL doing an insert on a table. I will illustrate how you can reproduce this error:
org.postgresql.util.PSQLException: ERROR:
current transaction is aborted, commands ignored until end of transaction block
Summa...
SQL/mysql - Select distinct/UNIQUE but return all columns?
... MySQL, if that's what you're using.)
You could fetch the distinct fields and stick to picking a single arbitrary row each time.
On some platforms (e.g. PostgreSQL, Oracle, T-SQL) this can be done directly using window functions:
select *
from (
select *,
row_number() over (partition...
how to get an uri of an image resource in android
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The format is:
"android.resource://[package]/[res id]"
[package] is your package name
[res id] is value of the resource ID, e.g. R.drawable.sample_1
to stitch it together, use
Uri path = Uri.parse("android.resource://your.package.name/"...
Auto-center map with multiple markers in Google Maps API v3
.../lon coordinates into pixel coordinates and then find the pixel center and convert that back into lat/lon coordinates.
You might not notice or mind the drift depending how far north or south of the equator you are. You can see the drift by doing map.setCenter(map.getBounds().getCenter()) inside of ...
Should I impose a maximum length on passwords?
...it was hashed, the password length wouldn't matter to them (hash functions convert a string of any length to a fixed length).
– Vicky Chijwani
Apr 15 '17 at 13:58
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Example of UUID generation using Boost in C++
I want to generate just random UUID's, as it is just important for instances in my program to have unique identifiers. I looked into Boost UUID , but I can't manage to generate the UUID because I don't understand which class and method to use.
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How do I create an array of strings in C?
...rray expressions; under most circumstances, an expression of type T [N] is converted to an expression of type T *, and the value of the expression is the address of the first element. So if you wrote str = "foo", you'd be trying to assign the address of the first character of "foo" to the array str...
What are allowed characters in cookies?
...Utility to safely encode the cookie value before writing to the cookie and convert it back to its original form on reading it out.
// Encode
HttpUtility.UrlEncode(cookieData);
// Decode
HttpUtility.UrlDecode(encodedCookieData);
This will stop ampersands and equals signs spliting a value into a b...
Javascript: How to detect if browser window is scrolled to bottom?
... if any, versions of IE support window.scrollY.
– Batandwa
Oct 27 '14 at 11:33
3
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What is the Java ?: operator called and what does it do?
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Yes, it is a shorthand form of
int count;
if (isHere)
count = getHereCount(index);
else
count = getAwayCount(index);
It's called the conditional operator. Many people (erroneously) call it the ternary operator, because it's the only te...