I started by googling, and found this article which talks about mutex tables.
I have a table with ~14 million records. If I want to add more data in the same format, is there a way to ensure the record I …
I'm using mysql database. I have a confusion between primary key and unique key.
Please help me where should I create primary and unique key. I mean in which situation we create unique key or primary key .
I have the following table schema which maps user_customers to permissions on a live MySQL database:
mysql> describe user_customer_permission;
+------------------+---------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+------------------+---------+------+-----+---------+…