What is precision in MySQL?
The precision represents the number of significant digits that are stored for values, and the scale represents the number of digits that can be stored following the decimal point.
What is meant by a decimal 5 2 )?
Weight Decimal (5,2) means the total number of digits cannot exceed 5 and 2 digits can be placed to the right of the decimal. However, the value 1000.45 in the second line of code above exceeds the specified range of (5, 2) since it means 6 digits in total and throws an overflow error.
What is float data type in MySQL?
FLOAT is a single precision floating point number. MySQL uses four bytes to store a FLOAT value. DOUBLE is a double precision floating point number. MySQL uses eight bytes to store a DOUBLE value. MySQL treats DOUBLE as a synonym for DOUBLE PRECISION (a non-standard extension).
What data type is salary?
Numeric data types are normally used to store data like price, salary etc.
What is decimal precision and scale in SQL?
Precision is the number of digits in a number. Scale is the number of digits to the right of the decimal point in a number. For example, the number 123.45 has a precision of 5 and a scale of 2. In SQL Server, the default maximum precision of numeric and decimal data types is 38.
What is precision and scale in SQL?
How to create a new database in MySQL?
MySQL implements a database as a directory that contains all files which correspond to tables in the database. To create a new database in MySQL, you use the CREATE DATABASE statement with the following syntax: First, specify the database_name following the CREATE DATABASE clause. The database name must be unique within the MySQL server instance.
What is the SQL code for MySQL?
Code language: SQL (Structured Query Language) (sql) MySQL returns the database name and the character set and collation of the database. Finally, to access the newly created database, you use the USE database command as follows: mysql> USE testdb; Database changed
How to avoid creating a database that already exists in MySQL?
If you try to create a database with a name that already exists, MySQL issues an error. Second, to avoid an error in case you accidentally create a database that already exists, you can specify the IF NOT EXISTS option. In this case, MySQL does not issue an error but terminates the CREATE DATABASE statement instead.
What is the MySQL™ Reference Manual?
This is the MySQL™ Reference Manual. It documents MySQL 5.0 through 5.0.92. This manual is for MySQL Enterprise Server, our commercial offering, and for MySQL Community Server. Sections that do not apply for MySQL Enterprise Server users are marked: This section does not apply to MySQL Enterprise Server users.