Concatenation

Syntax

expression1 + expression2

where:

• expression: an MQL expression that evaluates to a string, list or map value.

Description

The concatenation can operate on strings, lists and maps.

The left and right hand sides of the comparison must have the same type (i.e. strings can only be concatenated to strings and lists can only be concatenated to lists, etc.) or else an error will abort the evaluation process.

Examples

"Hello" + "World"

["winter", "spring"] + ["summer", "autumn"]

{"winter" = "cold"} + {"summer" = "warm"}