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How to drop a table if it exists?
... any rows (and will raise an error if the table does not exist).
Instead, for a permanent table you can use
IF OBJECT_ID('dbo.Scores', 'U') IS NOT NULL
DROP TABLE dbo.Scores;
Or, for a temporary table you can use
IF OBJECT_ID('tempdb.dbo.#T', 'U') IS NOT NULL
DROP TABLE #T;
SQL Server ...
How can I set focus on an element in an HTML form using JavaScript?
I have a web form with a text box in it. How do I go about setting focus to the text box by default?
9 Answers
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Remove duplicates from an array of objects in JavaScript
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A primitive method would be:
var obj = {};
for ( var i=0, len=things.thing.length; i < len; i++ )
obj[things.thing[i]['place']] = things.thing[i];
things.thing = new Array();
for ( var key in obj )
things.thing.push(obj[key]);
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Spring JPA selecting specific columns
I am using Spring JPA to perform all database operations. However I don't know how to select specific columns from a table in Spring JPA?
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How to implement the Android ActionBar back button?
...roid:value="com.example.ParentActivity" />
</activity>
See here for further reading.
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How to override toString() properly in Java?
... your IDE's features to generate the toString method. Don't hand-code it.
For instance, Eclipse can do so if you simply right-click on the source code and select Source > Generate toString
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Difference between Repository and Service Layer?
...Service layer This part operates on view models.
EDIT:
Example of flow for /Orders/ByClient/5 (we want to see order for specific client):
public class OrderController
{
private IOrderService _orderService;
public OrderController(IOrderService orderService)
{
_orderService =...
How to open a local disk file with JavaScript?
... this with untrusted content can be a security vulnerability. (To see this for yourself, create a bad.txt containing something like <img src="/nonexistent" onerror="alert(1);"> and see that the alert gets executed—it could be more malicious code.)
– ShreevatsaR
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How to Update Multiple Array Elements in mongodb
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if you have similar problem, vote for this issue - jira.mongodb.org/browse/SERVER-1243
– LiorH
Jan 12 '11 at 16:08
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Best way to check if object exists in Entity Framework?
...hat is the best way to check if an object exists in the database from a performance point of view? I'm using Entity Framework 1.0 (ASP.NET 3.5 SP1).
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