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Laravel Migration Change to Make a Column Nullable
...ifying columns, so you'll need use another technique such as writing a raw SQL command. For example:
// getting Laravel App Instance
$app = app();
// getting laravel main version
$laravelVer = explode('.',$app::VERSION);
switch ($laravelVer[0]) {
// Laravel 4
case('4'):
DB::stat...
error, string or binary data would be truncated when trying to insert
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Thanks. Mine was because the sql column in tableA is varchar(100). It also insert to another table, in which, the column is varchar(50).
– Hnin Htet Htet Aung
Jun 5 '17 at 7:39
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How to update SQLAlchemy row entry?
...ns. Instead use user.no_of_logins = user.no_of_logins + 1. Translated into sql the latter correct way becomes: SET no_of_logins = no_of_logins + 1.
– ChaimG
Jul 14 '16 at 20:19
6
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What is this operator in MySQL?
...d and therefore supported on other databases, unlike <=>, which is MySQL-specific.
You can think of them as specialisations of MySQL's <=>:
'a' IS NULL ==> 'a' <=> NULL
'a' IS NOT NULL ==> NOT('a' <=> NULL)
Based on this, your particular query (fragment) can be con...
MongoDB and “joins” [duplicate]
...in since the relationship will only be evaluated when needed. A join (in a SQL database) on the other hand will resolve relationships and return them as if they were a single table (you "join two tables into one").
You can read more about DBRef here:
http://docs.mongodb.org/manual/applications/data...
Effect of NOLOCK hint in SELECT statements
... about it by a colleague and my initial research made me question myself. SQLServer 2005 documentation says that with NOLOCK is the default locking scheme for all select statements! I'd guess then that my hints would be redundant in ...
– Bob Probst
Oct 16 '0...
phpmyadmin logs out after 1440 secs
In my local development Ubuntu box I use MySQL and phpmyadmin to work with the database.
24 Answers
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Throw an error in a MySQL trigger
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As of MySQL 5.5, you can use the SIGNAL syntax to throw an exception:
signal sqlstate '45000' set message_text = 'My Error Message';
State 45000 is a generic state representing "unhandled user-defined exception".
Here is a more...
How can I put a database under git (version control)?
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PostGreSQL database files are binary files, feel free to put them in your git repository, you just won't be able to do any diffs on them, and any changes will most likely change the whole database and thus you now have to send the f...
How to change the default charset of a MySQL table?
There is a MySQL table which has this definition taken from SQLYog Enterprise :
5 Answers
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