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含有suBstr函数的sql查询语句怎么写,急求解!!!

select * from 职工记录表 where substr(工号,1,4)='2008' and substr(工号,5,1)='2'

你得提供数据库的相关字段。。 select * from 表名 where 时间字段 >='2014/10/31 08:00:00.000' and 时间字段

首先要保证你的登录名在两个数据库中都有相应权限 然后只要在其中一个数据库中调用另一个数据库的表就可以了 格式是:数据库名.dbo.表名

1、select * from 雇员表 where year(出生日期)=1982 and 性别='男' union select * from 雇员表 where 所在部门='食品部门' 2、按 badkano 写的就ok了

string connectionstring="连接字符串"; string SQLString ="SQL命令"; string RE=""; using (OleDbConnection connection = new OleDbConnection(connectionString)) { DataSet ds = new DataSet(); try { connection.Open(); OleDbDataAdapter...

别着急,很简单,看下面: private DataTable GetTable() { string connstring = "server=127.0.0.1\\SQLEXPRESS;database=数据库名;uid=用户名;pwd=密码";//连接串,连接你的数据库 SqlConnection conn = new SqlConnection(connstring); strin...

string cmdText = "select id,name,age,sex form Study where sex = '男'"; SqlConnection conn = new SqlConnection(“数据库连接字符串”); SqlCommand cmd = new SqlCommand(cmdText, conn); conn.Open(); SqlDataReader reader = cmd.ExecuteR...

select 课程号,avg(成绩) from tableA group by 课程号 order by avg(成绩) desc

表结构都没有,所有sql语句都是扯淡 select a.课程名, a.教师, t.maxScore, t.minScore, t.avgScore from 课程表 a, (SELECT 课程号, MAX(成绩) AS maxScore, MIN(成绩) AS minScore, AVG(成绩) as avgScore FROM 选课表 GROUP BY 课程号) t WHE...

https://technet.microsoft.com/zh-cn/library/ms173434.aspx

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