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Create unique constraint with null columns
...houtMenu row first and then link it to a menu if necessary. It also makes selecting all the favorites in one query very difficult: I'd have to do something weird like select all the menu links first, and then select all the Favorites whose IDs don't exist within the first query. I'm not sure if I ...
How can I select every other line with multiple cursors in Sublime Text?
In Sublime Text 2, is it possible to instantly select every other (or odd/even) line and place multiple cursors on those lines?
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Troubleshooting “Illegal mix of collations” error in mysql
Am getting the below error when trying to do a select through a stored procedure in MySQL.
16 Answers
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Import PEM into Java Key Store
...s in the original example I found on internet:
ks.load( null, keypass.toCharArray());
ks.store( new FileOutputStream ( "mykeystore" ), keypass.toCharArray());
ks.load( new FileInputStream ( "mykeystore" ), keypass.toCharArray());
// end of section..
// read the key file from disk and create...
How to take backup of a single table in a MySQL database?
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You can use easily to dump selected tables using MYSQLWorkbench tool ,individually or group of tables at one dump then import it as follow: also u can add host information if u are running it in your local by adding -h IP.ADDRESS.NUMBER after-u usernam...
How to pull a random record using Django's ORM?
...on't know about other databases).
order_by('?')[:N] will be translated to SELECT ... FROM ... WHERE ... ORDER BY RAND() LIMIT N query.
It means that for every row in table the RAND() function will be executed, then the whole table will be sorted according to value of this function and then first N...
MySQL - ORDER BY values within IN()
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SELECT id, name
FROM mytable
WHERE name IN ('B', 'A', 'D', 'E', 'C')
ORDER BY FIELD(name, 'B', 'A', 'D', 'E', 'C')
The FIELD function returns the position of the first string in the remaining list of strings.
However, it i...
jQuery removing '-' character from string
I have a string "-123445". Is it possible to remove the '-' character from the string?
3 Answers
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JComboBox Selection Change Listener?
...istener() 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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How do I change tab size in Vim?
...hat's what would happen should tabs be used, rather than always delete one char at a time).
To make a fully educated decision as to how to set things up, you'll need to read Vim docs on tabstop, shiftwidth, softtabstop and expandtab. The most interesting bit is found under expandtab (:help 'expandta...