1 查询一段时间前的时间Oracle 数据库-- 查询一个月前的数据SELECT t.CREATE_DATE FROM T_WEB_CORP tWHERE TO_CHAR(t.CREATE_DATE,"YYYY-MM")<=TO_CHAR(ADD_MONTH...

数据重复了，只需要其中一条-- id 重复了，取出其中一条SELECT id,member_seq,point,gmt_createFROM XXXXWHERE             and gmt_create > "2020-07-20 00:00:00...

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总结一下平时用到最多的sql语句 1.特殊日期--今天凌晨SELECT DATEADD(dd,DATEDIFF(dd,0,GETDATE()),0)--明天凌晨SELECT DATEADD(dd,DATEDIFF(dd,0,GETDATE())+1,0)--当...

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Distinct 去重复。性能上和 GROUP BY 差异据说有点点优势，GROUP BY 存在毕竟不是用来去重的，GROUP BY 用作分组，当然可以做去重动作 select DISTINCT [列1]，[列2]... from [数据库].[dbo].[表...

基础篇 //查询时间，友好提示$sql = "select date_format(create_time, "%Y-%m-%d") as day from table_name"; //int 时间戳类型$sql = "select from_unixti...

+ ",(select LISTAGG(mo.model_code,",") within group(order by mo.model_code) from srm_pos_resource_model mo where mo.supplier_id=t....

select name,lcount from sys.user$ 2、查看用户是否被锁 select username,account_status,lock_date from dba_users; 3、查看锁定账户登陆失败次数配置   select * ...

1.获取当前日期 如2020-13-22current_date() 或者current_date获取当前时间：from_unixtime(unix_timestamp()) 返回格式：yyyy-MM-dd HH:mm:ss　　　　　　：current_tim...

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数据库1、创建数据库USE master ; GO CREATE DATABASE Sales ON ( NAME = Sales_dat, FILENAME = "C:Program FilesMicrosoft SQL ServerMS...