Table: ow_googlelocation_data
INSERT IGNORE INTO `ow_googlelocation_data` (`entityId`, `entityType`, `countryCode`, `address`, `lat`, `lng`, `northEastLat`, `northEastLng`, `southWestLat`, `southWestLng`, `json`)
Those are names of columns to be inserted. They duplicate strucutre of ow_googlelocation_data table.
SELECT id ….FROM ow_base_user
Here we are telling to fill in `entityId` with userIDs from ow_base_user table.