3个表连接查询sql语句
@郁饶2517：求三表联合查询的SQL查询语句 -
曾方15756092140…… 车讯语句:select username,psw from (a1 left join a2 on a1.a1_id=a2.a1_id) left join a3 on a1.a1_id=a3.a1_id 这样写: SELECT S.SName AS 姓名, CS.CourseName AS 课程, C.Score AS 成绩 FROM Students AS S INNER JOIN Score AS C ...
@郁饶2517：sql语句查询数据是和三张表有关联的应该怎么写? -
曾方15756092140…… select School.SchoolID,Student.StudentName from School full join Class on School.ClassId=Class.ClassId full join Student on Class.StudentId=Student.StudentId 要查找的东西放在最上面,然后连接表,连接条件.就这样.
@郁饶2517：SQL语句三表连查,急求答案啊.看我详细提问. -
曾方15756092140…… select E.id,E.name,E.gender,E.birthday,sum(S.salary),D.deptname from Employee E inner join Salaryrecord S on E.id=S.id and S.sdate>CONVERT(Date,'2012') and S.sdate<CONVERT(Date,'2013') inner join Department D on E.deptid=D.deptid...
@郁饶2517：相同的表 怎么用sql语句做三表连查? -
曾方15756092140…… 表可以自身和自身做连接,关键看连接条件.n张表进行连接,需要n-1个连接条件.所谓连接条件就是两张表中那个字段对应相等.你的问题需要把具体表结构以及需求给出,才能进行解决.理论上来说肯定可以实现.
@郁饶2517：用SQL语句怎么查询三个表的结果 -
曾方15756092140…… select table_a.D,table_a.E,table_b.F (select A.D as D,sum(B.E) as E from A,B where A.D=B.D group by A.D) table_a, (select A.D as D,sum(C.F) as F from A,B where A.D=C.D group by A.D) table_b where table_a.D=table_b.D
@郁饶2517：三表查询,求SQl语句 -
曾方15756092140…… select a.id,a.data,t.data2,t.data3 from a left join(select cc.a_id,bb.data data2,cc.data data3 from (select a_id,data,rank() over (partition by a_id order by data) rn from C) cc full join (select a_id,data,rank() over (partition by a_id order by data) rn from B...
@郁饶2517：三个表关联查询,SQL语句该怎么写 -
曾方15756092140…… 用and 通过相同的属性,链接起来
@郁饶2517：SQL数据库同时查询三个关联表,把这三个表内容按条件顺序显示出来SQL怎么写? -
曾方15756092140…… 比如有三张表 dept部门表(dept_id,dept_name)、 emp_info(emp_id,emp_name,dept_id,role_id)用户信息表、 emp_role(role_id,role_name)管理表 dept部门表的dept_id等于emp_info用户信息表dept_id, 而emp_role管理表的role_id等于emp...
@郁饶2517：一个3表的sqlserver连接查询怎么写 -
曾方15756092140…… select a.aid,a.aname,b.Bnum,c.Cstr from a,b,c where a.aid=b.aid and a.aid=c.aid---- 或者你要的是 select aid,aname from a union all select aid,bnum from b union all select aid,cstr from c;
@郁饶2517：三个表之间的查询的sql语句 -
曾方15756092140…… 看看我下面这个就知道了 SELECT u.u_id, u.u_name, u.u_pass, u.u_tname, u.u_email, r.r_id, r.r_name, g.g_id, g.g_name, ur.c_id FROM dbo.Nx_user AS u LEFT OUTER JOIN dbo.Nx_urcenter AS ur ON u.u_id = ur.u_id LEFT OUTER JOIN dbo.Nx_role AS r ON ur.r_id = r.r_id LEFT OUTER JOIN dbo.Nx_group AS g ON r.g_id = g.g_id
曾方15756092140…… 车讯语句:select username,psw from (a1 left join a2 on a1.a1_id=a2.a1_id) left join a3 on a1.a1_id=a3.a1_id 这样写: SELECT S.SName AS 姓名, CS.CourseName AS 课程, C.Score AS 成绩 FROM Students AS S INNER JOIN Score AS C ...
@郁饶2517：sql语句查询数据是和三张表有关联的应该怎么写? -
曾方15756092140…… select School.SchoolID,Student.StudentName from School full join Class on School.ClassId=Class.ClassId full join Student on Class.StudentId=Student.StudentId 要查找的东西放在最上面,然后连接表,连接条件.就这样.
@郁饶2517：SQL语句三表连查,急求答案啊.看我详细提问. -
曾方15756092140…… select E.id,E.name,E.gender,E.birthday,sum(S.salary),D.deptname from Employee E inner join Salaryrecord S on E.id=S.id and S.sdate>CONVERT(Date,'2012') and S.sdate<CONVERT(Date,'2013') inner join Department D on E.deptid=D.deptid...
@郁饶2517：相同的表 怎么用sql语句做三表连查? -
曾方15756092140…… 表可以自身和自身做连接,关键看连接条件.n张表进行连接,需要n-1个连接条件.所谓连接条件就是两张表中那个字段对应相等.你的问题需要把具体表结构以及需求给出,才能进行解决.理论上来说肯定可以实现.
@郁饶2517：用SQL语句怎么查询三个表的结果 -
曾方15756092140…… select table_a.D,table_a.E,table_b.F (select A.D as D,sum(B.E) as E from A,B where A.D=B.D group by A.D) table_a, (select A.D as D,sum(C.F) as F from A,B where A.D=C.D group by A.D) table_b where table_a.D=table_b.D
@郁饶2517：三表查询,求SQl语句 -
曾方15756092140…… select a.id,a.data,t.data2,t.data3 from a left join(select cc.a_id,bb.data data2,cc.data data3 from (select a_id,data,rank() over (partition by a_id order by data) rn from C) cc full join (select a_id,data,rank() over (partition by a_id order by data) rn from B...
@郁饶2517：三个表关联查询,SQL语句该怎么写 -
曾方15756092140…… 用and 通过相同的属性,链接起来
@郁饶2517：SQL数据库同时查询三个关联表,把这三个表内容按条件顺序显示出来SQL怎么写? -
曾方15756092140…… 比如有三张表 dept部门表(dept_id,dept_name)、 emp_info(emp_id,emp_name,dept_id,role_id)用户信息表、 emp_role(role_id,role_name)管理表 dept部门表的dept_id等于emp_info用户信息表dept_id, 而emp_role管理表的role_id等于emp...
@郁饶2517：一个3表的sqlserver连接查询怎么写 -
曾方15756092140…… select a.aid,a.aname,b.Bnum,c.Cstr from a,b,c where a.aid=b.aid and a.aid=c.aid---- 或者你要的是 select aid,aname from a union all select aid,bnum from b union all select aid,cstr from c;
@郁饶2517：三个表之间的查询的sql语句 -
曾方15756092140…… 看看我下面这个就知道了 SELECT u.u_id, u.u_name, u.u_pass, u.u_tname, u.u_email, r.r_id, r.r_name, g.g_id, g.g_name, ur.c_id FROM dbo.Nx_user AS u LEFT OUTER JOIN dbo.Nx_urcenter AS ur ON u.u_id = ur.u_id LEFT OUTER JOIN dbo.Nx_role AS r ON ur.r_id = r.r_id LEFT OUTER JOIN dbo.Nx_group AS g ON r.g_id = g.g_id
