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Is there any difference between GROUP BY and DISTINCT
...s. Use GROUPY BY if you want to apply aggregate operators (MAX, SUM, GROUP_CONCAT, ..., or a HAVING clause).
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How to add List to a List in asp.net [duplicate]
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Use Concat or Union extension methods. You have to make sure that you have this direction using System.Linq; in order to use LINQ extensions methods.
Use the AddRange method.
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How to reset index in a pandas dataframe? [duplicate]
...is faster:
df = pd.DataFrame({'a':[8,7], 'c':[2,4]}, index=[7,8])
df = pd.concat([df]*10000)
print (df.head())
In [298]: %timeit df1 = df.reset_index(drop=True)
The slowest run took 7.26 times longer than the fastest. This could mean that an intermediate result is being cached.
10000 loops, best o...
.NET / C# - Convert char[] to string
... 'o', 'c', 'k', '-', '&', '-', 'R', 'o', 'l', 'l' };
string s = String.Concat( c );
Debug.Assert( s.Equals( "Rock-&-Roll" ) );
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How to select following sibling/xml tag using xpath
...ss in the value of the @class attribute, the predicate to use is: contains(concat(' ', @class, ' '), ' name ') . But in this question the @class attributes do have only single values.
– Dimitre Novatchev
Jun 15 '15 at 15:17
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How to get the URL without any parameters in JavaScript?
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You can concat origin and pathname, if theres present a port such as example.com:80, that will be included as well.
location.origin + location.pathname
sha...
How to add additional fields to form before submit?
...orm = $(this).closest('form');
form = form.serializeArray();
form = form.concat([
{name: "customer_id", value: window.username},
{name: "post_action", value: "Update Information"}
]);
$.post('/change-user-details', form, function(d) {
if (d.error) {
alert("There was a problem ...
Is Chrome's JavaScript console lazy about evaluating arrays?
... // and arr2 changes, then later value might be shown
4. arr.concat() // a new array is created, but same issue as slice(0)
5. JSON.stringify(arr) // works well as it takes a snapshot of the whole array
// or object, and the format shows the exact struct...
GetProperties() to return all properties for an interface inheritance hierarchy
...return type.GetProperties();
return (new Type[] { type })
.Concat(type.GetInterfaces())
.SelectMany(i => i.GetProperties());
}
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Get all table names of a particular database by SQL query?
...n I have different table schemata within one database (SQL Server): SELECT CONCAT(TABLE_SCHEMA, '.', TABLE_NAME) FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_TYPE = 'BASE TABLE' AND TABLE_CATALOG='MyDB'
– Verena Haunschmid
Aug 10 '15 at 8:08
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