Digital type
Type |
Size |
Range (signed) |
Range (unsigned) |
Use |
TINYINT |
1 bytes |
(-128,127) |
(0,255) |
Small integer value |
SMALLINT |
2 bytes |
(-32 768,32 767) |
(0,65 535) |
Large integer value |
Mediumint |
3 bytes |
(-8 388 608,8 388 607) |
(0,16 777 215) |
Large integer value |
int or integer |
4 bytes |
(-2 147 483 648,2 147 483 647) |
(0,4 294 967 295) |
Large integer value |
BIGINT |
8 bytes |
(-9 233 372 036 854 775 808,9 223 372 036 854 775 807) |
(0,18 446 744 073 709 551 615) |
Maximum integer value |
FLOAT |
4 bytes |
( -3.402 823 466 e+38,1.175 494 351 E-38), 0, (1.175 494 351 e-38,3.402 823 466 351 e+38) |
0, (1.175 494 351 e-38,3.402 823 466 e+38) |
Single precision Floating point value |
DOUBLE |
8 bytes |
(1.797 693 134 862 315 7 e+308,2.225 073 858 507 201 4 E-308), 0, (2.225 073 858 507 201 4 e-308,1.797 693 134 862 315 7 e+3 08) |
0, (2.225 073 858 507 201 4 e-308,1.797 693 134 862 315 7 e+308) |
Double precision Floating point value |
DECIMAL |
For decimal (m,d), if m>d, is m+2 otherwise d+2 |
Values that depend on M and D |
Values that depend on M and D |
Decimal value |
Character type
CHAR |
0-255 bytes |
Fixed length string |
VARCHAR |
0-255 bytes |
Variable length string |
Tinyblob |
0-255 bytes |
A binary string of no more than 255 characters |
Tinytext |
0-255 bytes |
Short text string |
Blob |
0-65 535 bytes |
Long text data in binary form |
TEXT |
0-65 535 bytes |
Long Text data |
Mediumblob |
0-16 777 215 bytes |
Medium-length text data in binary form |
Mediumtext |
0-16 777 215 bytes |
Medium-Length text data |
Logngblob |
0-4 294 967 295 bytes |
Large text data in binary form |
Longtext |
0-4 294 967 295 bytes |
Maximum text data |
Enumerate collections
ENUM (maximum of 65,535 members) 64KB
SET (maximum of 64 members) 64KB
Time Type
Type |
Size bytes |
Range |
Format |
Use |
DATE |
3 |
1000-01-01/9999-12-31 |
Yyyy-mm-dd |
Date value |
Time |
3 |
' -838:59:59 '/' 838:59:59 ' |
HH:MM:SS |
Time Value or duration |
Year |
1 |
1901/2155 |
YYYY |
Year value |
Datetime |
8 |
1000-01-01 00:00:00/9999-12-31 23:59:59 |
YYYY-MM-DD HH:MM:SS |
Blend date and time values |
TIMESTAMP |
8 |
1970-01-01 00:00:00/2037, sometime |
YYYYMMDD HHMMSS |
Mixed date and time values, timestamp |
MySQL size and length of each data type