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How do I get textual contents from BLOB in Oracle SQL
...ed to peek into the blob... But thanks anyway.
– Roland Tepp
May 7 '09 at 6:32
Thanks Mac, that works fine --- But wh...
At runtime, find all classes in a Java application that extend a base class
...ns. I mistakenly figured this would be as easy as it is in the .Net world and this answer has saved me a lot of time.
– akmad
Oct 1 '12 at 19:55
1
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Input with display:block is not a block, why not?
...hy does display:block;width:auto; on my text input not behave like a div and fill the container width?
7 Answers
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How do I drop a foreign key constraint only if it exists in sql server?
...gn_keys
WHERE object_id = OBJECT_ID(N'dbo.FK_TableName_TableName2')
AND parent_object_id = OBJECT_ID(N'dbo.TableName')
)
ALTER TABLE [dbo.TableName] DROP CONSTRAINT [FK_TableName_TableName2]
share
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Load and execute external js file in node.js with access to local variables?
Is it easy/possible to do a simple include('./path/to/file') type of command in node.js?
6 Answers
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MySQL join with where clause
...
user_category_subscriptions.category_id = categories.category_id
and user_category_subscriptions.user_id =1
See, with an inner join, putting a clause in the join or the where is equivalent. However, with an outer join, they are vastly different.
As a join condition, you specify the rows...
C# Float expression: strange behavior when casting the result float to int
...ing (it's actually the value 61.99999809265137 when expressed as a double) and that your question is only about why two seemingly identical computations result in the wrong value.
The answer is that in the case of (int)(6.2f * 10), you are taking the double value 61.99999809265137 and truncating it...
SQL Data Reader - handling Null column values
...der.GetString(indexFirstName);
}
That's your only reliable way to detect and handle this situation.
I wrapped those things into extension methods and tend to return a default value if the column is indeed null:
public static string SafeGetString(this SqlDataReader reader, int colIndex)
{
if(!...
Why can lambdas be better optimized by the compiler than plain functions?
In his book The C++ Standard Library (Second Edition) Nicolai Josuttis states that lambdas can be better optimized by the compiler than plain functions.
...
How do I get indices of N maximum values in a NumPy array?
...ten equivalently as arr.argsort()[-1:-4:-1]? I've tried it in interpreter and it comes up with the same result, but I'm wondering if it's not broken by some example.
– abroekhof
Sep 20 '12 at 9:05
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