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Jun 29, 2009 · Float is Approximate-number data type, which means that not all values in the data type range can be represented exactly. Decimal/Numeric is Fixed-Precision data type, which means that all the values in the data type range can be represented exactly with precision and scale. You can use decimal for money saving.
- Overview
- Syntax
- Converting float and real data
- See also
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance Azure Synapse Analytics Analytics Platform System (PDW) SQL analytics endpoint in Microsoft Fabric Warehouse in Microsoft Fabric
Approximate-number data types for use with floating point numeric data. Floating point data is approximate; therefore, not all values in the data type range can be represented exactly. The ISO synonym for real is float(24).
float [ (n) ] Where n is the number of bits that are used to store the mantissa of the float number in scientific notation and, therefore, dictates the precision and storage size. If n is specified, it must be a value between 1 and 53. The default value of n is 53.
The SQL Server float[(n)] data type complies with the ISO standard for all values of n from 1 through 53. The synonym for double precision is float(53).
Values of float are truncated when they are converted to any integer type.
When you want to convert from float or real to character data, using the STR string function is usually more useful than CAST( ). This is because STR enables more control over formatting. For more information, see STR (Transact-SQL) and Functions (Transact-SQL).
FLOAT(size, d) A floating point number. The total number of digits is specified in size. The number of digits after the decimal point is specified in the d parameter. This syntax is deprecated in MySQL 8.0.17, and it will be removed in future MySQL versions: FLOAT(p) A floating point number.
Mar 26, 2024 · The Float data type is used to store floating point numbers that are not fixed/exact. This means that the float data type does not store the exact values, rather, it stores the approximate value of the stored number.
Feb 24, 2020 · Use the SQL Server FLOAT data type to define columns, variables, and parameters storing floating-point numbers. By floating point, we mean, numbers that have no fixed decimal place. Consider using SQL FLOAT when working with scientific values.
Jan 15, 2018 · 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). Neither should be used for storing monetary values.
Sep 25, 2020 · Float Data Type. 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.
