Array index-nested loop join w/ quantification

SET `compiler.arrayindex` "true";

DROP DATAVERSE TestYelp IF EXISTS;

CREATE DATAVERSE TestYelp;

USE TestYelp;

CREATE TYPE CheckinType AS { checkin_id: uuid  };

CREATE TYPE CheckinDatesToMarkersType AS { marker: string };

CREATE DATASET YelpCheckin(CheckinType) PRIMARY KEY checkin_id AUTOGENERATED;

CREATE DATASET YelpCheckinDateMarkers (CheckinDatesToMarkersType) PRIMARY KEY marker;

CREATE INDEX IdxYelpCheckinDates ON YelpCheckin (UNNEST dates : string);

FROM    YelpCheckinDateMarkers M, YelpCheckin C

WHERE   TO_STRING(M.datetime) /*+ indexnl */ IN C.dates AND 

        C.business_id = "--Ni3oJ4VOqfOEu7Sj2Vzg"

SELECT  COUNT(*);