> ## Documentation Index
> Fetch the complete documentation index at: https://docs.kinetica.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Column Types
### Number
| Data Type | Description |
| ----------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `BOOLEAN` | Effective *specific type*: [boolean](/content/concepts/types#types-chart) |
| `TINYINT` | Effective *specific type*: [int8](/content/concepts/types#types-chart) |
| `BYTE` | *Alias for* `TINYINT` |
| `SMALLINT` | Effective *specific type*: [int16](/content/concepts/types#types-chart) |
| `INTEGER` | Effective *specific type*: [int](/content/concepts/types#types-chart) |
| `INT` | *Alias for* `INTEGER` |
| `BIGINT` | Effective *specific type*: [long](/content/concepts/types#types-chart) |
| `DECIMAL` | *Alias for* `BIGINT` |
| `LONG` | *Alias for* `BIGINT` |
| `UNSIGNED BIGINT` | Effective *specific type*: [ulong](/content/concepts/types#types-chart) |
| `UNSIGNED LONG` | *Alias for* `UNSIGNED BIGINT` |
| `REAL` | Effective *specific type*: [float](/content/concepts/types#types-chart) |
| `FLOAT` | *Alias for* `REAL` |
| `DOUBLE` | Effective *specific type*: [double](/content/concepts/types#types-chart) |
| `DECIMAL(P,S)` | Effective *specific type*: [decimal(p,s)](/content/concepts/types#types-chart)
Maximum precision `P` is *27*
Maximum scale `S` is *18*
Precision determines decimal storage size:
*1* - *18*: *8*
*19* - *27*: *12* |
| `NUMERIC` | *Alias for* `DECIMAL(P,S)` |
### String
| Data Type | Description |
| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `VARCHAR` | Effective *specific type*: [string](/content/concepts/types#types-chart); character limit based on configured system property |
| `VARCHAR(N)` | Effective *specific type*: the smallest [charN](/content/concepts/types#types-chart) type that is at least size `N`, or [string](/content/concepts/types#types-chart) if `N` is greater than *256* |
| `CHAR` | *Alias for* `VARCHAR` / `VARCHAR(N)` |
| `STRING` | *Alias for* `VARCHAR` / `VARCHAR(N)` |
| `TEXT` | *Alias for* `VARCHAR` / `VARCHAR(N)` |
| `IPV4` | *Shorthand for* `VARCHAR(IPV4)`, which applies the [IPV4](/content/sql/ddl/column-properties#sql-column-properties) column property |
| `UUID` | Effective *specific type* [uuid](/content/concepts/types#types-chart) |
| `JSON` | Effective *specific type* [json](/content/concepts/types#types-chart) |
### Date/Time
| Data Type | Description |
| ---------------- | --------------------------------------------------------------------------- |
| `DATE` | Effective *specific type*: [date](/content/concepts/types#types-chart) |
| `DATETIME` | Effective *specific type*: [datetime](/content/concepts/types#types-chart) |
| `TIME` | Effective *specific type*: [time](/content/concepts/types#types-chart) |
| `TIMESTAMP` | Effective *specific type*: [timestamp](/content/concepts/types#types-chart) |
| `TYPE_DATE` | *Alias for* `DATE` |
| `TYPE_TIME` | *Alias for* `TIME` |
| `TYPE_TIMESTAMP` | *Alias for* `TIMESTAMP` |
### Binary
| Data Type | Description |
| ----------- | ----------------------------------------------------------------------- |
| `BLOB` | Effective *specific type*: [bytes](/content/concepts/types#types-chart) |
| `BINARY` | *Alias for* `BLOB` |
| `BYTES` | *Alias for* `BLOB` |
| `VARBINARY` | *Alias for* `BLOB` |
### Geospatial
| Data Type | Description |
| ---------------- | ------------------------------------------------------------------------------------------ |
| `GEOMETRY` | Effective *specific type*: [wkt](/content/concepts/types#types-chart) (*string* base type) |
| `ST_GEOMETRY` | *Alias for* `GEOMETRY` |
| `WKT` | *Alias for* `GEOMETRY` |
| `BLOB(WKT)` | Effective *specific type*: [wkt](/content/concepts/types#types-chart) (*bytes* base type) |
| `BINARY(WKT)` | *Alias for* `BLOB(WKT)` |
| `BYTES(WKT)` | *Alias for* `BLOB(WKT)` |
| `VARBINARY(WKT)` | *Alias for* `BLOB(WKT)` |
### Composite
| Data Type | Description |
| -------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------- |
| `BOOLEAN[N]` | Effective *specific type*: [array(boolean)](/content/concepts/types#types-chart) (*string* base type) |
| `INTEGER[N]` | Effective *specific type*: [array(int)](/content/concepts/types#types-chart) (*string* base type) |
| `BIGINT[N]` | Effective *specific type*: [array(long)](/content/concepts/types#types-chart) (*string* base type) |
| `UNSIGNED BIGINT[N]` | Effective *specific type*: [array(ulong)](/content/concepts/types#types-chart) (*string* base type) |
| `VECTOR(N)` | Effective *specific type*: [vector(n)](/content/concepts/types#types-chart) (*bytes* base type); generally used in [vector search](/content/vector_search) |
| `REAL[N]` | Effective *specific type*: [array(float)](/content/concepts/types#types-chart) (*string* base type) |
| `DOUBLE[N]` | Effective *specific type*: [array(double)](/content/concepts/types#types-chart) (*string* base type) |
| `VARCHAR[N]` | Effective *specific type*: [array(string)](/content/concepts/types#types-chart) (*string* base type) |