minKey

This function is used by Ignition's Expression language.

Description

Returns org.bson.types.MinKey, used in filters for the MongoDB Perspective binding expression.

Syntax

minKey()

• Parameters

  • None

• Results

  • MinKey - A special data type that will match with document fields of the same MinKey type.

Example

Code Snippet

// In this example, we are querying for weather data documents using the field “elevation”
// In a Perspective MongoDB Binding, the expression below is applied to “value” of
// filter { _id: “value” }
 
minKey() // binding will return entire document(s) where minKey is found