update /test/alert_status_memdb set test='aaa'
/**
output()
**/
;

select id,test from /test/alert_status_memdb
/**
output()
matchcount(id, "9986946430000814177", test, "aaa", 1)
**/
;

update /test/alert_status_memdb set test='xxx' where id="9986946430000814177"
/**
output()
**/
;

select id,test from /test/alert_status_memdb
/**
output()
matchcount(id, "9986946430000814177", test, "xxx", 1)
**/
;

update /test/alert_status_memdb set test='xxx' where id="9986946430000814177"
/**
output()
**/
;

select id,test from /test/alert_status_memdb
/**
output()
matchcount(id, "9986946430000814177", test, "xxx", 1)
**/
;