mysql data types
MySQL data types are of interest to many DBAs and developers. Dive into them with BreachDirectory.com!
As a database management system, MySQL comes with quite a lot of MySQL data types that you must understand to properly work with the DBMS. Here’s what they are, what they’re used for, and what problems they can assist in solving.
MySQL data types, frankly speaking, are identifiers for possible values inserted in a column. Think of it this way – if you have a database with tables inside of it, those tables contain columns, and each of those columns expect some values to be inserted into them. However, before being inserted into columns, values need to adhere to rather strict “standards” – these “standards” refer to MySQL data types.
According to the MySQL documentation, there are multiple categories data types can fall into. They are as follows:
String data types concern everything related to text – once these MySQL data types are in use, the column can accept a variety of text-based values. String data types include CHAR (character), VARCHAR (variable character), BINARY and VARBINARY, BLOB and TEXT values, as well as values that are ENUMerated or SET.
Numeric data types concern numbers – these data types can store integers, integers with floating-point values, or bits.
Date and time data types concern values related to date and time – these are DATE, DATETIME, TIMESTAMP, TIME, and YEAR. Some of these data types (DATE, DATETIME, and TIMESTAMP) are related, while others work in conjunction with them. Timestamp values may be used to “stamp” when a specific firewall violation has occurred, while values related to the year may be useful in conjunction with historical data – these MySQL data types have an explicit length of 4 characters.
Spatial data types concern geospatial data – some of such data types (GEOMETRY, POINT, LINESTRING, POLYGON) can store geometry values, while other MySQL data types (MULTIPOINT, MULTILINESTRING, MULTIPOLYGON, and GEOMETRYCOLLECTION) can be used to hold “collections” of values.
When it comes to the JSON data type in MySQL, it walks alone and accepts JSON values. Such a data type may be very useful when building APIs or related scenarios.
MySQL data types aren’t few and far between and oftentimes, they are a source of confusion for developers and DBAs alike. However, with proper understanding what they are, how they work, and what they can offer to your specific use case, everything becomes as clear as water.
Hopefully, this blog has introduced you to the world of MySQL data types and if something was unclear, cleared some things up. Stay tuned, and until next time.
There are 5 categories of MySQL data types – string data types, numeric, date and time data types, spatial data types, as well as the JSON data type.
The choice of a specific data type depends on your use case. To learn what data types and collations to choose as well as how to make MySQL bend to your wishes as far as your use case is concerned, consider reading the book Hacking MySQL: Breaking, Optimizing, and Securing MySQL for Your Use Case.
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