gitlabhq/gitlabhq — pull request #4282 by bke-drewb (2013-06-12 02:15:43+00:00)
Title: Increase snippet content column size.

This fixes issue #3904

Before:
```
mysql> desc snippets;
+------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+--------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| title | varchar(255) | YES | | NULL | |
| content | text | YES | | NULL | |
| author_id | int(11) | NO | | NULL | |
| project_id | int(11) | NO | MUL | NULL | |
| created_at | datetime | NO | MUL | NULL | |
| updated_at | datetime | NO | | NULL | |
| file_name | varchar(255) | YES | | NULL | |
| expires_at | datetime | YES | MUL | NULL | |
+------------+--------------+------+-----+---------+----------------+
9 rows in set (0.00 sec)

mysql> SELECT MAX(LENGTH(content)) FROM snippets;
+----------------------+
| MAX(LENGTH(content)) |
+----------------------+
| 65535 |
+----------------------+
1 row in set (0.02 sec)
```

After:
```
mysql> desc snippets;
+------------+--------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------+--------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| title | varchar(255) | YES | | NULL | |
| content | longtext | YES | | NULL | |
| author_id | int(11) | NO | | NULL | |
| project_id | int(11) | NO | MUL | NULL | |
| created_at | datetime | YES | MUL | NULL | |
| updated_at | datetime | YES | | NULL | |
| file_name | varchar(255) | YES | | NULL | |
| expires_at | datetime | YES | MUL | NULL | |
+------------+--------------+------+-----+---------+----------------+
9 rows in set (0.00 sec)

mysql> SELECT MAX(LENGTH(content)) FROM snippets;
+----------------------+
| MAX(LENGTH(content)) |
+----------------------+
| 279552 |
+----------------------+
1 row in set (0.00 sec)
```

You will see that the 'text' type was changed to 'longtext' now after implementing this change and running a db:migrate task. The 'SELECT MAX(LENGTH(content)) FROM snippets;' simply shows that I was able to successfully create a snippet with content length > 65,535 which was the previous limit.

I went with longtext (4294967295) because I didn't see a reason why not. Merge requests also support this limit.