摘要:
PUT /blogs/_doc/1 { "title": "About popularity", "content": "In this post we will talk about...", "votes": 0 } PUT /blogs/_doc/2 { "title": "About pop 阅读全文
摘要:
numtodsinterval(<x>,<c>) ,x是一个数字,c是一个字符串,表明x的单位,这个函数把x转为interval day to second数据类型 常用的单位有 ('day','hour','minute','second') example SQL> select sysdate 阅读全文