Difference in using IN and = when there is only single value?

[Ricco19]

Is there any performance impact when used,

index IN ("windows_server")

OR 

index="windows_server"  ?

[gcusello]

Hi @Ricco19 ,

there isn't any difference in the search performances: the IN operator is a simplification in the search writing when there are many values.

Ciao.

Giuseppe