---
title: Data Types
slug: neurons-api/data-types
createdAt: 2026-08-19T08:34:10.114Z
---

The following data types are supported.

| Data Type | Supported Function Operators                                       | Syntax/Rules                                                                                                                             | Examples                                                                                                  |
| --------- | ------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------- |
| Boolean   | isnull, eq, ne                                                     | The accepted values are true and false, not quoted                                                                                       | ?filter=Field eq true                                                                                     |
| DateTime  | isnull, eq, ge, gt, le, lt, ne                                     | The DateTime should be provided in ISO 6801 format and be contained in single quotes. Time zones (Z) are not supported.                  | ?filter=Field eq '2022-10-20' and Field2 eq '2022-10-20 12🕙30'                                           |
| Decimal   | isnull, eq, ge, gt, le, lt, ne                                     | Decimals should not be quoted and the literal 'M' should be provided at the end of the numerical value                                   | ?filter=Field gt 55.75M                                                                                   |
| Double    | isnull, eq, ge, gt, le, lt, ne                                     | Doubles should not be quoted and the literal 'D' should be provided at the end of the numerical value                                    | ?filter=Field lt 20.00D                                                                                   |
| Enum      | eq, ne                                                             | Enums should not be quoted and provided within pound signs (#). The type should be appended to the enum value, delimited by a period (.) | ?filter=OperatingSystem eq #OperatingSystem.Windows#                                                      |
| Float     | isnull, eq, ge, gt, le, lt, ne                                     | Floating point number. Floats should not be quoted and the literal 'F' should be provided at the end of the numerical value              | ?filter=Field ge 207.631F                                                                                 |
| Guid      | isnull, eq, ge, gt, in, le, lt, ne                                 | Guids must be provided as literals with no quotes.                                                                                       | ?filter=in(CollectionField, \[000478ec-0000-0000-0000-000000000000,00045fb3-0000-0000-0000-000000000000]) |
| Int32     | isnull, eq, ge, gt, in, le, lt, ne                                 | Integers should not be quoted and require no special handling                                                                            | ?filter=Field eq 250 or in(CollectionField, \[10, 15])                                                    |
| Int64     | isnull, eq, ge, gt, le, lt, ne                                     | Longs should not be quoted and the literal 'L' should be provided at the end of the numerical value                                      | ?filter=Field ne 952042234398L                                                                            |
| String    | isnull, contains, endswith, eq, ge, gt, in, le, lt, ne, startswith | The string value must be single quoted. A single quote within the string should be escaped with an additional '                          | ?filter=Field eq 'It was that Developer''s opinion' and Field2 eq 'Nothing to Escape'                     |

Numerical values require their literal notation and the end of the value.

Supported function operators are case sensitive and will return a validation parsing error if not in lower case format. Field values are case insensitive, however, and the external caller does not need to meet any particular strict casing.