All differences are written according to MySQL 5.7. The most important difference between DATETIME and TIMESTAMP types is the timezone storage. TIMESTAMP stores the values converted from current ti...
MySQL is known for its possibility of storing and requesting the data. But it can also use the variables. To display one variable in MySQL, a simple SELECT suffices: mysql> SET @hello = "World !"; ...
Database export is very usefull in the situations when we want to restore database from some precised point in the past. To do that in command line, we can use mysqldump command. They're different sam...
We can not only export database content but also import the content from one file containing SQL commands. To do that, we can use < after database connection command. Following command import dump....
In some situations, we can wish to show floating numbers with fixed number of numbers after the decimal point. In this case, ROUND(field, decimal places) can be used. Take a look on given samples: ...
