18.2 database data types
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Database data types
| Numeric Types | Spec | Description |
|---|---|---|
TINYINT |
Integer(-128 ~ 127) | A very small integer |
SMALLINT |
Integer(-32768 ~ 32767) | A small integer |
MEDIUMINT |
Integer(-8388608 ~ 8388607) | A medium-sized integer |
INT |
Integer(-2147483648 ~ 2147483647) | A standard integer |
BIGINT |
Integer(-923372036854775808 ~ 923372036854775807) | A large integer |
DECIMAL |
A fixed-point number | |
FLOAT |
Decimal(23자리) | A single-precision floating point number |
DOUBLE |
Decimal(24 ~ 53자리) | A double-precision floating point number |
BIT |
A bit field |
| String Types | Spec | Description |
|---|---|---|
CHAR |
String(0 ~ 255) | A fixed-length nonbinary (character) string |
VARCHAR |
String(0 ~ 255) | A variable-length non-binary string |
BINARY |
A fixed-length binary string | |
VARBINARY |
A variable-length binary string | |
TINYBLOB |
A very small BLOB (binary large object) | |
BLOB |
String(0 ~ 65535) | A small BLOB |
MEDIUMBLOB |
String(0 ~ 16777215) | A medium-sized BLOB |
LONGBLOB |
String(0 ~ 424967295) | A large BLOB |
TINYTEXT |
String(0 ~ 255) | A very small non-binary string |
TEXT |
String(0 ~ 65535) | A small non-binary string |
MEDIUMTEXT |
String(0 ~ 16777215) | A medium-sized non-binary string |
LONGTEXT |
String(0 ~ 424967295) | A large non-binary string |
ENUM |
설정 옵션중 하나 | An enumeration; each column value may be assigned one enumeration member |
SET |
설정 옵션중 선택 | A set; each column value may be assigned zero or more SET members |
| Date and Time Types | Spec | Description |
|---|---|---|
DATE |
CCYY-MM-DD | A date value in CCYY-MM-DD format |
TIME |
CCYY-MM-DD hh:mm:ss | A time value in hh:mm:ss format |
DATETIME |
CCYYMMDDhhmmss | A date and time value inCCYY-MM-DD hh:mm:ssformat |
TIMESTAMP |
hh:mm:ss | A timestamp value in CCYY-MM-DD hh:mm:ss format |
YEAR |
CCYY, YY | A year value in CCYY or YY format |
| Spatial Data Types | Spec | Description |
|---|---|---|
GEOMETRY |
A spatial value of any type | |
POINT |
A point (a pair of X-Y coordinates) | |
LINESTRING |
A curve (one or more POINT values) |
|
POLYGON |
A polygon | |
GEOMETRYCOLLECTION |
A collection of GEOMETRYvalues |
|
MULTILINESTRING |
A collection of LINESTRINGvalues |
|
MULTIPOINT |
A collection of POINTvalues |
|
MULTIPOLYGON |
A collection of POLYGONvalues |