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How to get current date & time in MySQL?
...rent date in epoch format, then you can use UNIX_TIMESTAMP(). For example:
select now(3), sysdate(3), unix_timestamp();
would yield
+-------------------------+-------------------------+------------------+
| now(3) | sysdate(3) | unix_timestamp() |
+--------------------...
How do I style a dropdown with only CSS?
Is there a CSS-only way to style a <select> dropdown?
24 Answers
24
...
MySQL ON vs USING?
...n tables ON a column, a set of columns and even a condition. For example:
SELECT * FROM world.City JOIN world.Country ON (City.CountryCode = Country.Code) WHERE ...
USING is useful when both tables share a column of the exact same name on which they join. In this case, one may say:
SELECT ... FR...
Case-insensitive search
...ut bear in mind it is a regular expression, and thus can contain regex metacharacters. If you want to take the string from elsewhere (eg, user input), or if you want to avoid having to escape a lot of metacharacters, then you're probably best using indexOf like this:
matchString = 'best';
// If the...
Why does this async action hang?
...DBConnection.ExecuteAsync<ResultClass>(
ds => ds.Execute("select slow running data into result"));
}
What's the difference? There's now no awaiting anywhere, so nothing being implicitly scheduled to the UI thread. For simple methods like these that have a single return, there's no...
How to change the foreign key referential action? (behavior)
...r, so I wrote something to make the statements for me. Figured I'd share:
SELECT
CONCAT('ALTER TABLE `' ,rc.TABLE_NAME,
'` DROP FOREIGN KEY `' ,rc.CONSTRAINT_NAME,'`;')
, CONCAT('ALTER TABLE `' ,rc.TABLE_NAME,
'` ADD CONSTRAINT `' ,rc.CONSTRAINT_NAME ,'` FOREIGN KEY (`',kcu.COLUMN_NAME,
...
Java: Clear the console
...
System.out.println(new String(new char[50]).replace("\0", "\r\n")); will do the job faster and better.
– Aaron Esau
Dec 30 '17 at 0:28
1
...
How can I remove a trailing newline?
...s the Python equivalent of Perl's chomp function, which removes the last character of a string if it is a newline?
28 Ans...
Get top 1 row of each group
...
;WITH cte AS
(
SELECT *,
ROW_NUMBER() OVER (PARTITION BY DocumentID ORDER BY DateCreated DESC) AS rn
FROM DocumentStatusLogs
)
SELECT *
FROM cte
WHERE rn = 1
If you expect 2 entries per day, then this will arbitrarily pick one...
How to generate .json file with PHP?
...
Here is a sample code:
<?php
$sql="select * from Posts limit 20";
$response = array();
$posts = array();
$result=mysql_query($sql);
while($row=mysql_fetch_array($result)) {
$title=$row['title'];
$url=$row['url'];
$posts[] = array('title'=> $titl...