# Materialized Keys

Materialized keys are the result of calculations on one or multiple existing keys in your events.

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# Reference

Materialized keys work a lot like Excel functions. A materialized_key consists of:

• one or multiple existing keys or materialized_keys prefixed with $. Example: $@duration
• a function. Example: MIN to compute the minimum between two values
• numbers: Example: 32

Example materialized_key: LESS(PLUS($@duration, $@initDuration), 100). This will return true for every event where the sum of the @duration and @initDuration is less than 100.

# List of operators

# Comparison operators

• LESS: less than
• LESSOREQUALS: less than or equal
• GREATER: greater than
• GREATEROREQUALS: greater than or equal
• EQUALS: equal
• NOTEQUALS: not equal

# Math operators

• MIN: minimum
• MAX: maximum
• PLUS: sum
• MINUS: subtract
• MULTIPLY: multiply
• DIVIDE: divide
• MODULO: modulo