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Hidden Features of VB.NET?
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useful if you wish to catch a specific SQLException, say -2 which if i remember correctly is network timeout: Catch ex as sqlException where ex.code = -2
– Pondidum
Dec 27 '08 at 18:06
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Feedback on using Google App Engine? [closed]
... webapp libraries that are provided.
If you're used to the flexibility of SQL the datastore can take some getting used to. Nothing too traumatic! The biggest adjustment is moving away from JOINs. You have to shed the idea that normalizing is crucial.
Ben
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How does JPA orphanRemoval=true differ from the ON DELETE CASCADE DML clause
...d on.
Entity state transitions
JPA translates entity state transitions to SQL statements, like INSERT, UPDATE or DELETE.
When you persist an entity, you are scheduling the INSERT statement to be executed when the EntityManager is flushed, either automatically or manually.
when you remove an entity...
How do I save a stream to a file in C#?
...not just keep the binary data as binary data and write it back to disk (or SQL) as binary data?
EDIT: As this seems to be something people want to see... if you do just want to copy one stream to another (e.g. to a file) use something like this:
/// <summary>
/// Copies the contents of input...
How to delete a record in Django models?
...So eg if you delete by an arbitrary field, this can be way slower then the SQL counterpart... :(
– Vajk Hermecz
Mar 25 '14 at 16:22
1
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How to iterate through a DataTable
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DataTable dt = new DataTable();
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
adapter.Fill(dt);
foreach(DataRow row in dt.Rows)
{
TextBox1.Text = row["ImagePath"].ToString();
}
...assumes the connection is open and the command is set up properly...
MySQL Select Date Equal to Today
I'm trying to run a mysql select statement where it looks at today's date and only returns results that signed up on that current day. I've currently tried the following, but it doesn't seem to work.
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Split a collection into `n` parts with LINQ?
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I have an irrational dislike of SQL-style Linq, so this is my favorite answer.
– piedar
Jan 2 '14 at 19:53
1
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How to delete a row by reference in data.table?
... would still be quite inefficient compared to a row store database such as SQL, which is more suited for fast insert and delete of rows wherever those rows are in the table. But still, it would be a lot faster than copying a new large object without the deleted rows.
On the other hand, since column...
Tablix: Repeat header rows on each page not working - Report Builder 3.0
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