【SQL】

插入一些内容

INSERT INTO a(field1,field2) SELECT * FROM(SELECT f1,f2 FROM b JOIN c) AS tb;

修改时间格式 int -> date

SELECT DATE_ADD(FROM_UNIXTIME(0,'%Y-%m-%d %H:%i:%s'),interval EXTRACT(HOUR FROM TIMEDIFF(NOW() ,UTC_TIMESTAMP())) hour) from DUAL

2019-11-01