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Create boolean column in MySQL with false as default value?
... mybool boolean not null default 0
);
FYI: boolean is an alias for tinyint(1).
Here is the proof:
mysql> create table mytable (
-> mybool boolean not null default 0
-> );
Query OK, 0 rows affected (0.35 sec)
mysql> insert into mytable () values ();
Query OK, 1...
How to initialize array to 0 in C?
... Please refer to: The initialized 0 is not a character. it is a integer.
– Yonggoo Noh
May 4 '16 at 4:43
...
Order a List (C#) by many fields? [duplicate]
...'t have to be IComparable
aListOfObjects.Sort((x, y) =>
{
int result = x.A.CompareTo(y.A);
return result != 0 ? result : x.B.CompareTo(y.B);
});
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What does `unsigned` in MySQL mean and when to use it?
...
MySQL says:
All integer types can have an optional
(nonstandard) attribute UNSIGNED.
Unsigned type can be used to permit
only nonnegative numbers in a column
or when you need a larger upper
numeric range for the column. For
examp...
Extract every nth element of a vector
...
It is better to use seq.int(1L, length(a), 6L), at least for long vectors
– Wojciech Sobala
Mar 8 '11 at 20:45
1
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PHP prepend leading zero before single digit number, on-the-fly [duplicate]
...
You can use sprintf: http://php.net/manual/en/function.sprintf.php
<?php
$num = 4;
$num_padded = sprintf("%02d", $num);
echo $num_padded; // returns 04
?>
It will only add the zero if it's less than the required number of character...
How to correctly sort a string with a number inside? [duplicate]
...ng (also known as natural sorting):
import re
def atoi(text):
return int(text) if text.isdigit() else text
def natural_keys(text):
'''
alist.sort(key=natural_keys) sorts in human order
http://nedbatchelder.com/blog/200712/human_sorting.html
(See Toothy's implementation in the ...
Remove the image from a imageview Android [duplicate]
...
If an image is not loaded into imageView and still one tries to clear it, the program stops unexpectedly. Is there a way to tackle this ?
– Krithi07
May 29 '15 at 10:11
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Remove background drawable programmatically in Android
...
I get this error: The method setBackgroundResource(int) in the type View is not applicable for the arguments (null)
– UKDataGeek
May 13 '12 at 9:08
2
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Can I change a column from NOT NULL to NULL without dropping it?
...
Sure you can.
ALTER TABLE myTable ALTER COLUMN myColumn int NULL
Just substitute int for whatever datatype your column is.
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