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How do I drop a function if it already exists?
... is what type of function you are trying to delete (denoted in the top sql by FN, IF and TF):
FN = Scalar Function
IF = Inlined Table Function
TF = Table Function
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Generate a random number in the range 1 - 10
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If by numbers between 1 and 10 you mean any float that is >= 1 and < 10, then it's easy:
select random() * 9 + 1
This can be easily tested with:
# select min(i), max(i) from (
select random() * 9 + 1 as i from gene...
Android - implementing startForeground for a service?
...hod to make my service run in the foreground. Currently I start my service by the following in another activity:
11 Answer...
SQL/mysql - Select distinct/UNIQUE but return all columns?
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You're looking for a group by:
select *
from table
group by field1
Which can occasionally be written with a distinct on statement:
select distinct on field1 *
from table
On most platforms, however, neither of the above will work because the behav...
Storyboard - refer to ViewController in AppDelegate
... From within the delegate you can access the storyboard instance loaded by your info.plist like this: [[[self window] rootViewController] storyboard] According to the docs this will return the "storyboard from which the view controller originated." (or nil if it didn't come from a storyboard). ...
Replacing H1 text with a logo image: best method for SEO and accessibility?
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By the way, it is relevant, a logo is part of your website content, it is not used for decoration, so use <img> with alt attribute not CSS for your logo.
– Boris Guéry
Mar 31 '10 ...
How can prepared statements protect from SQL injection attacks?
...prepare("SELECT * FROM users where id=?");
where the data is substituted by some variable called a parameter or a placeholder.
Note that exactly the same query is sent to the server, without any data in it! And then we're sending the data with the second request, essentially separated from the qu...
Passing parameters in rails redirect_to
....1 docs under the 3xx definitions: "The action required MAY be carried out by the user agent without interaction with the user if and only if the method used in the second request is GET or HEAD." Expand on what you're really trying to accomplish and we can probably push you in the correct directio...
Add a new column to existing table in a migration
... new column as a FOREIGN KEY to an existing table.
Create a new migration by executing this command : make:migration
Example :
php artisan make:migration add_store_id_to_users_table --table=users
In database/migrations folder you have new migration file, something like :
2018_08_08_093431_a...
Mysql - How to quit/exit from stored procedure
...situation in which there was no error, then use the accepted answer posted by @piotrm. Most typically, however, you will be bailing due to an error condition (especially in a SQL procedure).
As of MySQL v5.5 you can throw an exception. Negating exception handlers, etc. that will achieve the same...