What is float in SQL example?

What is float data type example?

Examples of integers are 0 , 1 , 2 , 3 and 4 . The float data type represents a floating-point or decimal number. Examples of floats are 0.1243 and 12.245 . A string represents a sequence of characters, up to a length of 4 KB.

What is a float in SQL?

Float is an approximate number data type used to store a floating-point number. float (n) - n is the number of bits that are used to store the mantissa in scientific notation. Range of values: - 1.79E+308 to -2.23E-308, 0 and 2.23E-308 to 1.79E+308. Storage size: 4 Bytes if n = 1-9 and 8 Bytes if n = 25-53 – default = ...

Why float is used in SQL?

float is used to store approximate values, not exact values. It has a precision from 1 to 53 digits. real is similar but is an IEEE standard floating point value, equivalent to float(24).

How do you declare a float in SQL?

The syntax for creating a float column float(n), when n is between 1 to 53. The default value of n is 53. The float(1) to float(23) will create the Single Precision 32-bit column, which is actually Real data type. Hence SQL Server automatically maps it into Real data type.