As it represents an exact number, this data type is mostly used for data that relies on precise values (such as monetary data). To store exact numeric values, use the fixed-point data type – DECIMAL. Instead, use the DECIMAL data type for such use cases. Note: Do not use floating-point numbers when comparing values, especially when dealing with monetary data. If P has a value from 0 to 23, it is a single-precision column.
You can also use the FLOAT(P) syntax to specify a floating-point data type, where P specifies the precision. For example, the value 5143,234 would be defined as 7,3 as it has 7 digits in total and 3 digits after the decimal point. M represents the total number of digits, while D is the number of decimals. The basic syntax for defining FLOAT/ DOUBLE data types is FLOAT(M,D)/ DOUBLE(M,D). DOUBLE represent double-precision values that use 8 bytes and include up to 15 or 16 significant digits.FLOAT represents single-precision values that use 4 bytes and include up to 6 or 7 significant digits.Use floating-point data types for high-precision calculations. Floating-Point Typesįloating-point numeric data types are rational numbers used for representing approximate values. Its minimum signed value is 0, while its maximum signed value is 18446744073709551615. If it is signed, it has the range from -2147483648 to 2147483647.īIGINT is a big integer that uses 8 bytes of storage. When unsigned, it ranges from 0 to 4294967295. INT is an integer that uses 4 bytes of storage. Signed, its minimum value is -8388608, while its maximum value is 8388607. If unsigned, it has a range from 0 to 16777215. MEDIUMINT is a medium-sized integer that uses 3 bytes of storage. When signed, it has a range from -32768 to 32767. SMALLINT is a small integer that uses 2 bytes of storage. If it is signed, it has a range from -128 to 127.
TINYINT is a very small integer that uses 1 byte of storage. Therefore, numbers such as 30 and -5435 can be stored as integer data types, while 5,3 or 1/5 cannot. However, they do not handle fractional numbers. They include both positive and negative values. Integer data types are used for whole numbers (integers).
0 kommentar(er)
