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NULL values inside NOT IN clause
... addressed in an excellent answer by @Brannon):
DECLARE @T TABLE
(
true CHAR(4) DEFAULT 'true' NOT NULL,
CHECK ( 3 IN (1, 2, 3, NULL )),
CHECK ( 3 NOT IN (1, 2, NULL ))
);
INSERT INTO @T VALUES ('true');
SELECT COUNT(*) AS tally FROM @T;
As per @Brannon's answer, the first constraint (usi...
insert multiple rows via a php array into mysql
...time via a query other than appending each value on the end of a mile long string and then executing it. I am using the CodeIgniter framework so its functions are also available to me.
...
How to convert 'binary string' to normal string in Python3?
For example, I have a string like this(return value of subprocess.check_output ):
3 Answers
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Java string to date conversion
What is the best way to convert a String in the format 'January 2, 2010' to a Date in Java?
15 Answers
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What's the difference between JavaScript and JScript?
...(ECMAScript 3 equivalent)
Firefox 1.5 supports JavaScript 1.6 (1.5 + Array Extras + E4X + misc.)
Firefox 2.0 supports JavaScript 1.7 (1.6 + Generator + Iterators + let + misc.)
Firefox 3.0 supports JavaScript 1.8 (1.7 + Generator Expressions + Expression Closures + misc.)
The next version of Firefox...
Differences between Perl and PHP [closed]
...uding matching (=~, !~), quote-like (qw, qx &c.), exponentiation (**), string repetition (x) and range (.. and ...). PHP has a few operators Perl doesn't, such as the error suppression operator (@), instanceof (though Perl does have the Universal::isa method) and clone.
In PHP, new is an operat...
PostgreSQL: How to pass parameters from command line?
...elect * from table_1 where id = :v1;
Please pay attention on how we pass string/date value using two quotes " '...' "
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How to validate an email address in JavaScript
...3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$/;
return re.test(String(email).toLowerCase());
}
Here's the example of regular expresion that accepts unicode:
const re = /^(([^<>()\[\]\.,;:\s@\"]+(\.[^<>()\[\]\.,;:\s@\"]+)*)|(\".+\"))@(([^<>()[\]\.,;:\s@\"]+\.)+[^<&...
Select all contents of textbox when it receives focus (Vanilla JS or jQuery)
...
Also just for extra info: "input[type=text]" now can be "input:text" regards
– Ricardo Vega
Jan 26 '09 at 22:29
8
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Is Meyers' implementation of the Singleton pattern thread safe?
...ingleton& instance()
{
static bool initialized = false;
static char s[sizeof( Singleton)];
if (!initialized) {
initialized = true;
new( &s) Singleton(); // call placement new on s to construct it
}
return (*(reinterpret_cast<Singleton*>( &s)))...