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Simulate CREATE DATABASE IF NOT EXISTS for PostgreSQL?
...an work around it from within psql by executing the DDL statement conditionally:
SELECT 'CREATE DATABASE mydb'
WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'mydb')\gexec
The manual:
\gexec
Sends the current query buffer to the server, then treats each column of each row of the query's...
Environment variable to control java.io.tmpdir?
...s.
On Windows, OpenJDK's get_temp_directory() function makes a Win32 API call to GetTempPath(); this is how on Windows, Java reflects the value of the TMP environment variable.
On Linux and Solaris, the same get_temp_directory() functions return a static value of /tmp/.
I don't know if the actual...
How to open a new tab using Selenium WebDriver?
...ow. Obviously, you'd need to keep track of the window name(s) as normal to allow switching between them.
– Mark Rowlands
Jul 16 '13 at 15:42
1
...
Illegal mix of collations (utf8_unicode_ci,IMPLICIT) and (utf8_general_ci,IMPLICIT) for operation '=
...:
SET @rUsername = ‘aname’ COLLATE utf8_unicode_ci; -- COLLATE added
CALL updateProductUsers(@rUsername, @rProductID, @rPerm);
Option 2: add COLLATE to the WHERE clause:
CREATE PROCEDURE updateProductUsers(
IN rUsername VARCHAR(24),
IN rProductID INT UNSIGNED,
IN rPerm VARCHAR(16...
How to prevent a jQuery Ajax request from caching in Internet Explorer?
...
You can disable caching globally using $.ajaxSetup(), for example:
$.ajaxSetup({ cache: false });
This appends a timestamp to the querystring when making the request. To turn cache off for a particular $.ajax() call, set cache: false on it locally, ...
How do I decode HTML entities in Swift?
...his process as painless as possible (be warned that this method will strip all HTML tags as well).
Remember to initialize NSAttributedString from main thread only. It uses WebKit to parse HTML underneath, thus the requirement.
// This is a[0]["title"] in your case
let encodedString = "The Weeknd &...
AngularJS and its use of Dollar Variables
...="n = { visible: 'foo', $ignore: 'bar' };">{{ n }}</div>
Additionally when adding an explicit watcher on a scope object, changes to properties with a leading dollar sign of this object will not trigger the watcher. See this updated fiddle.
angular.equals() ignores keys prefixed with $.
...
How to sort a list in Scala by two fields?
... @SachinK: You could implement customOrdering as Ordering[Row] manually or using Ordering.by like this: val customOrdering = Ordering.by((r: Row) => (r.lastName, r.firstName))( Ordering.Tuple2(Ordering.String.reverse, Ordering.String) )`
– senia
Jun ...
What characters are allowed in an email address?
... not appear consecutively unless quoted (e.g. John..Doe@example.com is not allowed but "John..Doe"@example.com is allowed);
space and "(),:;<>@[\] characters are allowed with restrictions (they are only allowed inside a quoted string, as described in the paragraph below, and in addition, a b...
Which rows are returned when using LIMIT with OFFSET in MySQL?
...data between the two digits but now its clear :)
– MR_AMDEV
Sep 16 '18 at 15:09
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