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What is the MySQL VARCHAR max size?
...
Keep in mind that MySQL has a maximum row size limit
The internal representation of a MySQL table has a maximum row size limit of 65,535 bytes, not counting BLOB and TEXT types. BLOB and TEXT columns only contribute 9 to 12 bytes toward the row size limit because their contents are...
Best way to work with transactions in MS SQL Server Management Studio
... AdventureWorks;
GO
BEGIN TRANSACTION;
BEGIN TRY
-- Generate a constraint violation error.
DELETE FROM Production.Product
WHERE ProductID = 980;
END TRY
BEGIN CATCH
SELECT
ERROR_NUMBER() AS ErrorNumber
,ERROR_SEVERITY() AS ErrorSeverity
,ERROR_STATE() AS Err...
Formatting “yesterday's” date in python
... If you happen to be working with pandas, you can as well use: print((pd.to_datetime('Today') - pd.Timedelta('1 days')).strftime('%m%d%y'))
– etna
Oct 2 '17 at 7:39
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JComboBox Selection Change Listener?
...tionEvent e) {
doSomething();
}
});
@John Calsbeek rightly points out that addItemListener() will work, too. You may get 2 ItemEvents, though, one for the deselection of the previously selected item, and another for the selection of the new item. Just don't use both event types!
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Creating a left-arrow button (like UINavigationBar's “back” style) on a UIToolbar
...customView property of the toolbar item.
Works well for me.
Edit: As pointed out by PrairieHippo, maralbjo found that using the following, simple code did the trick (requires custom image in bundle) should be combined with this answer. So here is additional code:
// Creates a back button instea...
ROW_NUMBER() in MySQL
... shows how to mimic SQL ROW_NUMBER() with a partition by in MySQL. I ran into this very same scenario in a WordPress Implementation. I needed ROW_NUMBER() and it wasn't there.
http://www.explodybits.com/2011/11/mysql-row-number/
The example in the article is using a single partition by field. T...
How do I use an INSERT statement's OUTPUT clause to get the identity value?
... the newly inserted ID being output to the SSMS console like this:
INSERT INTO MyTable(Name, Address, PhoneNo)
OUTPUT INSERTED.ID
VALUES ('Yatrix', '1234 Address Stuff', '1112223333')
You can use this also from e.g. C#, when you need to get the ID back to your calling app - just execute the SQL q...
Difference between @OneToMany and @ElementCollection?
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Thanks Peder for the answer! You've a valid point there since @OneToMany can only relate entities.
– n_g
Jan 23 '12 at 9:03
add a comment
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How to use custom packages
...The actual answer depends on the nature of your "custom package".
If it's intended to be of general use, consider employing the so-called "Github code layout". Basically, you make your library a separate go get-table project.
If your library is for internal use, you could go like this:
Place the...
Python regex find all overlapping matches?
...capturing group inside a lookahead. The lookahead captures the text you're interested in, but the actual match is technically the zero-width substring before the lookahead, so the matches are technically non-overlapping:
import re
s = "123456789123456789"
matches = re.finditer(r'(?=(\d{10}))',s)
r...