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How do I cast a string to integer and have 0 in case of error in the cast with PostgreSQL?
...not fit your use case).
SELECT id, (0 || values)::integer from test_table ORDER BY id
Test data:
CREATE TABLE test_table
(
id integer NOT NULL,
description character varying,
"values" character varying,
CONSTRAINT id PRIMARY KEY (id)
)
-- Insert Test Data
INSERT INTO test_table VALUES (...
How to simulate a click by using x,y coordinates in JavaScript?
Is it possible to use given coordinates in order to simulate a click in JavaScript within a webpage?
5 Answers
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GitHub Error Message - Permission denied (publickey)
...ur ~/.ssh/ directory. If you don't specify key this way, then first key in order is taken and used for github authentication, so it depends on the key file name then.
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Which UUID version to use?
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Is Fortran easier to optimize than C for heavy calculations?
...ry and technology, this often meant restricting features and capability in order to give the compiler the best shot at optimizing the code. A good analogy is to think of Fortran 77 as a professional race car that sacrifices features for speed. These days compilers have gotten better across all langu...
Can you make valid Makefiles without tab characters?
... 2. The tab character is a very important part of the syntax of Makefiles. All command lines (the lines beginning with cc in our example) must start with tabs. After he made his change, line 2 didn’t, hence the error.
“So what?” you ask, “What’s wrong with that?”
There is nothi...
How might I convert a double to the nearest integer value?
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@Ronnie - nope, that's by design. By default, Math.Round will round midpoint numbers (x + .5) to the nearest even number. If you want a different behaviour, you have to specify it via a flag. msdn.microsoft.com/en-us/library/system.midpointrounding...
PhantomJS failing to open HTTPS site
...ding the option after the script name didn't work - you need to call it in order: phantomjs --ignore-ssl-errors=yes script.js
– simonlchilds
Jan 16 '14 at 20:15
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How can I unit test Arduino code?
...obably using a computer to work on your Arduino project. That computer is orders of magnitudes faster than the microcontroller. Write the tests to build and run on your computer.
Remember, the behavior of the Arduino library and microcontroller should be assumed to be either correct or at least c...
How to configure PostgreSQL to accept all incoming connections
I've got a PostgreSQL data base that I'd like to configure to accept all incoming connections regardless of the source IP address. How can this be configured in the pg_hba.conf file? I'm using postgreSQL version 8.4.
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