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Find rows that have the same value on a column in MySQL
... count(*) AS c
FROM TABLE
GROUP BY email
HAVING c > 1
ORDER BY c DESC
If you want the full rows:
select * from table where email in (
select email from table
group by email having count(*) > 1
)
share
...
JavaScript validation for empty input field
...wer_c"].value;
var d = document.forms["Form"]["answer_d"].value;
if (a == null || a == "", b == null || b == "", c == null || c == "", d == null || d == "") {
alert("Please Fill All Required Field");
return false;
}
}
</script>
<form method="post" name="F...
Calling constructors in c++ without new
...
Both lines are in fact correct but do subtly different things.
The first line creates a new object on the stack by calling a constructor of the format Thing(const char*).
The second one is a bit more complex. It essentially does the following
Create an object of...
MongoDB Show all contents from all collections
...
If you need to visually tidy up the collection presented to you, I also recommend: db.collectionName.find().pretty()
– Steven Ventimiglia
Nov 9 '17 at 20:21
...
HTML5 input type range show range value
...Name" id="ageOutputId">24</output>
</form>
JsFiddle Demo
If you want to show the value in text box, simply change output to input.
Update:
It is still Javascript written within your html, you can replace the
bindings with below JS code:
document.registrationForm.ageInpu...
Date format Mapping to JSON Jackson
...
12 hour format is better if the format also includes the AM/PM designation: DateFormat df = new SimpleDateFormat("yyyy-MM-dd hh:mm a z");
– John Scattergood
Feb 8 '16 at 21:45
...
POST Content-Length exceeds the limit
...
If you are using nginx+php fpm make sure to restart the php daemon sudo service php5-fpm restart
– Gourneau
Mar 16 '16 at 3:58
...
Adding Permissions in AndroidManifest.xml in Android Studio?
In Eclipse we were able to add permissions in AndroidManifest.xml by going to AndroidManifest.xml->Permission-> Adding permissions.
...
Are HTTP headers case-sensitive?
... are case-insensitive.
(Field values may or may not be case-sensitive.)
If you trust the major browsers to abide by this, you're all set.
BTW, unlike most of HTTP, methods (verbs) are case sensitive:
5.1.1 Method
The Method token indicates the
method to be performed on the
resource i...
Mongo Shell - Console/Debug Log
... core. Also, it contains a basic sprintf, padding, record formatting, etc. If you are going to be doing any signifigant amount of script work with mongodb, I recommend this route. Debugging mongodb scripts feels like being back at intro to programming and debugging with print statements. Configurabl...