> ## Documentation Index
> Fetch the complete documentation index at: https://docs.regatta.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Approximate numeric data type

| Data type          | Alias                                           | Size    | Range                       |
| :----------------- | :---------------------------------------------- | :------ | :-------------------------- |
| `REAL`             | `FLOAT4`                                        | 4 bytes | 6 decimal digits precision  |
| `DOUBLE PRECISION` | `DOUBLE`, <br /> `FLOAT8`, <br /> `FLOAT [(p)]` | 8 bytes | 15 decimal digits precision |

You can choose to use the data type `FLOAT(p)`. When it is being used, the optional `p` specifies the minimum acceptable precision in binary digits and it can range between 1 to 53. `FLOAT(1)` to `FLOAT(24)` as selecting the `REAL` type, while `FLOAT(25)` to `FLOAT(53)` select `DOUBLE PRECISION`. A value of `p` outside the allowed range results in an error. The default value is 53 (maximum precision).