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MySQL | FLOAT and DOUBLE

schedule Aug 12, 2023
Last updated
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MySQL
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MySQL's FLOAT and DOUBLE types are used to represent approximate numeric data values. The FLOAT type is for single-precision (4 bytes), while DOUBLE is for double-precision (8 bytes).

TYPE

STORAGE

ACCURACY

PERMISSIBLE VALUES

FLOAT

32 bits

Accurate to approx. 7 d.p

-3.402823466E+38 to -1.175494351E-38,

0,

1.175494351E-38 to 3.402823466E+38

DOUBLE

64 bits

Accurate to approx. 14 d.p

-1.7976931348623157E+308 to -2.2250738585072014E-308,

0,

2.2250738585072014E-308 to 1.7976931348623157E+308

FLOAT - Single precision

FLOAT(p)

p represents precision in bits. MySQL only uses this value to determine whether to use FLOAT or DOUBLE for the resulting data type. If the provided p is from 0 - 24 FLOAT is used.

DOUBLE - Double precision

FLOAT(p)

p represents precision in bits. MySQL only uses this value to determine whether to use FLOAT or DOUBLE for the resulting data type. If the provided p is from 25 - 53 DOUBLE is used.

robocat
Published by Arthur Yanagisawa
Edited by 0 others
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