# exists

fun ExpressionWithColumnType<*>.exists(vararg path: String, optional: String? = null): Exists

Checks whether data exists within this JSON expression at the specified path.

#### Parameters

path

String(s) representing JSON path/keys that match fields to check for existing data. If none are provided, the root context item `'$'` will be used by default. Note: Multiple path arguments are not supported by all vendors; please check the documentation.

optional

String representing any optional vendor-specific clause or argument. Note: optional function arguments are not supported by all vendors; please check the documentation.

#### Samples

org.jetbrains.exposed.sql.json.JsonColumnTests.testJsonExists