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Change type of varchar field to integer: “cannot be cast automatically to type integer”
...);
CREATE TABLE
=> insert into test(x) values ('14'), (' 42 ');
INSERT 0 2
=> ALTER TABLE test ALTER COLUMN x TYPE integer;
ERROR: column "x" cannot be cast automatically to type integer
HINT: Specify a USING expression to perform the conversion.
=> ALTER TABLE test ALTER COLUMN x TYPE ...
What are the underlying data structures used for Redis?
...formation.
– Homer6
Mar 8 '12 at 23:02
58
Thanks, but I'm not the sole big contributor, Pieter No...
Pipe subprocess standard output to a variable [duplicate]
...
answered Dec 22 '10 at 23:49
moinudinmoinudin
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How to Generate unique file names in C#
...doesn't matter, use GUIDs.
E.g.:
var myUniqueFileName = string.Format(@"{0}.txt", Guid.NewGuid());
or shorter:
var myUniqueFileName = $@"{Guid.NewGuid()}.txt";
In my programs, I sometimes try e.g. 10 times to generate a readable name ("Image1.png"…"Image10.png") and if that fails (because t...
What is the purpose of Order By 1 in SQL select statement?
...
210
This:
ORDER BY 1
...is known as an "Ordinal" - the number stands for the column based on the ...
Rounded table corners CSS only
...
90
Seems to work fine in FF and Chrome (haven't tested any others) with separate borders: http://js...
Does SVG support embedding of bitmap images?
...
209
Yes, you can reference any image from the image element. And you can use data URIs to make the ...
Media Queries: How to target desktop, tablet, and mobile?
...
IMO these are the best breakpoints:
@media (min-width:320px) { /* smartphones, portrait iPhone, portrait 480x320 phones (Android) */ }
@media (min-width:480px) { /* smartphones, Android phones, landscape iPhone */ }
@media (min-width:600px) { /* portrait tablets, portrait iPad,...
Iterator Loop vs index loop [duplicate]
...terate over a std::vector:
1) index-based iteration
for (std::size_t i = 0; i != v.size(); ++i) {
// access element as v[i]
// any code including continue, break, return
}
Advantages: familiar to anyone familiar with C-style code, can loop using different strides (e.g. i += 2).
Disadva...