Integer type

##MEDIUMINT Signed values: -8388608 to 8388607 (-3INTSigned value: -4##BIGINTUnsigned values: 0

Floating point type

Data type	Storage range	Bytes
TINYINT	Signed values: -128 to 127 (-) Unsigned values: 0 to 255 (0 to )	1
SMALLINT	Signed values: -32768 to 32767 (-) Unsigned value: 0 to 65535 (0 to #-1)	2
	None Signed value: 0 to 16777215 (0 to
	Unsigned value: 0
Signed value: -	## to -18

##Data typePrecisionFLOAT[(M,D)]6-7 decimal places (commonly used)##DOUBLE[ (M,D)]14-15 decimal places

Date time type

Date type	Storage space (bytes)	Date format	Range
datetime	8	YYYY-MM-DD HH:MM:SS	1000-01-01 00:00:00 ~ 9999-12-31 23:59:59
timestamp	4	YYYY-MM-DD HH:MM:SS	1970-01-01 00:00:01 ~ 2038
date	3	YYYY-MM-DD	1000-01-01 ~ 9999-12-31
year	1	YYYY	1901~2155
time	2	HH:MM:SS	-838:59:59 ~ 838:59:59

Character type

##VARCHAR(M)L+1 bytes , where L TINYTEXTL+1 bytes, where L<TEXTL+2 bytes, where L<#MEDIUMTEXT##LONGTEXTL+4 bytes, where L<

Column type	Description
CHAR(M )	M bytes, 0<=M<=255, fixed length



L+3 bytes, where L<

ENUM('value1','value2')	Enumeration, 1 or 2 bytes, depending on the number of enumerations (up to -1 value)

The above is all the content of this article, if you don’t know much about it yet If so, it will be easy to master if you can realize more of both sides by yourself!

Related recommendations:
About the data types numeric and decimal_MySQL of mysql database

The above is the detailed content of Describe the data types of mysql database in detail. For more information, please follow other related articles on the PHP Chinese website!