11.1 Numeric Data Types
- 11.1.1 Numeric Data Type Syntax
- 11.1.2 Integer Types (Exact Value) - INTEGER, INT, SMALLINT, TINYINT, MEDIUMINT, BIGINT
- 11.1.3 Fixed-Point Types (Exact Value) - DECIMAL, NUMERIC
- 11.1.4 Floating-Point Types (Approximate Value) - FLOAT, DOUBLE
- 11.1.5 Bit-Value Type - BIT
- 11.1.6 Numeric Type Attributes
- 11.1.7 Out-of-Range and Overflow Handling
MySQL supports all standard SQL numeric data types. These types include the exact numeric data types (
NUMERIC), as well as the approximate numeric data types (
DOUBLE PRECISION). The keyword
INT is a synonym for
INTEGER, and the keywords
FIXED are synonyms for
DECIMAL. MySQL treats
DOUBLE as a synonym for
DOUBLE PRECISION (a nonstandard extension). MySQL also treats
REAL as a synonym for
DOUBLE PRECISION (a nonstandard variation), unless the
REAL_AS_FLOAT SQL mode is enabled.
For information about how MySQL handles assignment of out-of-range values to columns and overflow during expression evaluation, see Section 11.1.7, “Out-of-Range and Overflow Handling”.
For information about storage requirements of the numeric data types, see Section 11.7, “Data Type Storage Requirements”.
For descriptions of functions that operate on numeric values, see Section 12.5, “Numeric Functions and Operators”. The data type used for the result of a calculation on numeric operands depends on the types of the operands and the operations performed on them. For more information, see Section 12.5.1, “Arithmetic Operators”.