先看一张表 create_time是订单创建时间,pay_time是支付时间 现在我想按照订单完成耗时的时间进行排序,并且取出来的数据中直接算好了差值,怎么用Sql呢,请看 select id,tid,payment_type,create_time,pay_time,(UNIX_TIMESTAMP(pay_time)-UNIX_TIMESTAMP(create_time))timeout from upay_order where pay_status=1 and create_time>'2
太久没有用SQL语句都有些忘记了,今天工作中遇到了那就尝试记录一下吧 需求是这样的:想查询同一个字段下,两条指定了不同内容,的其他的值 主要是要想到用where......in 语句如下:select * from jac_motorcade_vehicle where vin in ('VSN00001888888888','ZH201807090001002','ZHT00002000020026')
CASE WHEN TIMESTAMPDIFF(MINUTE,o.createDate,o.chargingStartDate) != THEN 'APP解锁计费' ELSE '系统自动计费' END TIMESTAMPDIFF(MINUTE,o.createDate,o.chargingStartDate) o.chargingStartDate减去o.createDate相减后得到分钟,如果后者小于前者分钟为负数. SELECT TIMESTAMPDIFF(MONTH,'2009-10-01
函数内指定是minute,则最终结果value值的单位是分钟,如果函数内指定为hours,则最终结果value值单位为小时. //UPLOAD_TIME 减去 CREATE_DTTM 求得时间差,以分钟数计时 select avg(TIMESTAMPDIFF(MINUTE,CREATE_DTTM,UPLOAD_TIME)) value,LEFT(CREATE_DTTM,10) time from 表名 WHERE CREATE_DTTM >= '2018-01-21' AND CREATE_DT
代码如下: $conn = new mysqli('localhost', 'root', '', 'excel');$sql = "select 中信一级行业 from excel group by 中信一级行业 order by convert(中信一级行业 USING gbk) COLLATE gbk_chinese_ci";//按中文排序$query = $conn->query($sql);$firstClass = array();//一类行业总集$result =
首先我们建立一张带有逗号分隔的字符串. CREATE TABLE test(id int(6) NOT NULL AUTO_INCREMENT,PRIMARY KEY (id),pname VARCHAR(20) NOT NULL,pnum VARCHAR(50) NOT NULL); 然后插入带有逗号分隔的测试数据 INSERT INTO test(pname,pnum) VALUES('产品1','1,2,4'); INSERT INTO test(pname,pnum) VALUES('产
select gid, username from users where FIND_IN_SET(8,gid); //查询gid里含有数字8的记录,gid是varchar ,数据格式:"1,12,8,18,5" select gid, username from users where !FIND_IN_SET(8,gid); //查询gid里不含有数字8的记录,gid是varchar ,数据格式:"1,12,8,18,5"
1.查询重复值: select code,count(*) as count from hospital group by code having count>1; 该语句查询code重复值大于1的记录 2.删除重复: DELETE FROM hospital WHERE id NOT IN (SELECT dt.minno FROM (SELECT MIN(id) AS minno FROM hospital GROUP BY code) dt); 该语句保留id最小的记录,其余code重复的
找第一层: SELECT * FROM tourists WHERE json_data->'$.weixinOpenId' = '299485886686868' 或者 SELECT * FROM devices WHERE JSON_EXTRACT(json_data, "$.lcswAccessToken") = '33e5028835bf4d478ed5cd8f8a618ea5' 找多层: SELECT * FROM devices WHERE json_extract(