Data Types
This section provides a list of the various data types supported by Vectara, helping you make informed decisions when working with different data types.
| Data Type | Description | Metadata Literal Syntax |
|---|---|---|
| Integer | The value is a signed integer up to eight bytes in length. | Any number of digits without a period. |
| Real (Float) | The value is a floating point number corresponding to a Java double, and is of IEEE 754 float64 format. | Any number of digits with a period. |
| Text | The value is UTF-8 text. | A string is enclosed in single quotes ('). You can escape a ' inside text by having two quotes (''). |
| Boolean | The value is Boolean | true or false |
| Null | If metadata is not present, its absence is indicated by NULL. | null |
Reference field names with special characters
The syntax above describes how to write metadata values. Field names have
their own rules. A field name that contains characters other than letters,
digits, and underscores, such as dots, dashes, or spaces, must be enclosed in
double quotes ("). For example, the field source.origin-name must be written
as doc."source.origin-name" = 'abc'.
For the full rules, including how to escape special characters inside a quoted name, see Reference field names with special characters.