2017-9-9

华理通db.sql

@@ -0,0 +1,95 @@
+create schema hualitongdb
+create table hualitongdb.pwds
+(
+    pwds_id int identity(0,1) ,
+    student_num varchar(10),
+    urp_pwd varchar(11),
+    jw_pwd varchar(11),
+    ty_pwd varchar(11),
+    PRIMARY KEY (pwds_id)
+);
+create table hualitongdb.users
+(
+    wechat_id varchar(40),
+    follow_date datetime not null DEFAULT getdate(),
+    pwds_id int DEFAULT '0',
+    PRIMARY KEY (wechat_id)
+);
+create table hualitongdb.names
+(
+    student_num varchar(10),
+    student_name varchar(10),
+    PRIMARY KEY (student_num)
+)
+insert into hualitongdb.pwds values (null,null,null,null);
+
+
+create view hualitongdb.view_wechatpwds as
+select hualitongdb.users.wechat_id,hualitongdb.pwds.student_num,hualitongdb.pwds.urp_pwd,hualitongdb.pwds.ty_pwd,hualitongdb.pwds.jw_pwd
+ from hualitongdb.pwds right join hualitongdb.users 
+ on hualitongdb.pwds.pwds_id = hualitongdb.users.pwds_id;
+
+CREATE TRIGGER TRIGG_PWDUPDATE
+ON hualitongdb.view_wechatpwds
+INSTEAD OF update 
+as 
+begin
+declare @wechat_id varchar(40),@student_num varchar(10),@pwds_id int,
+@urp_pwd varchar(11),@ty_pwd varchar(11),@jw_pwd varchar(11);
+select @wechat_id = wechat_id from [inserted];
+select @student_num = student_num from [inserted];
+select @urp_pwd = urp_pwd from [inserted];
+select @ty_pwd = ty_pwd from [inserted];
+select @jw_pwd = jw_pwd from [inserted];
+select @pwds_id = pwds_id from users where @wechat_id = wechat_id;
+
+if @pwds_id = 0
+    begin
+        insert into hualitongdb.pwds values
+        (@student_num,null,null,null)
+        select @pwds_id = Max(pwds_id) from pwds
+        update hualitongdb.users
+        set pwds_id = @pwds_id where wechat_id = @wechat_id
+    end
+
+if @student_num is null
+    begin
+        select student_num = @student_num from users where wechat_id = @wechat_id;
+    end
+else
+    begin
+        update hualitongdb.pwds
+        set student_num = @student_num
+        where pwds_id = @pwds_id
+    end
+if @urp_pwd is not null
+    begin
+        update hualitongdb.pwds
+        set urp_pwd = @urp_pwd
+        where pwds_id = @pwds_id
+    end
+if @ty_pwd is not null
+    begin
+        update hualitongdb.pwds
+        set ty_pwd = @ty_pwd
+        where pwds_id = @pwds_id
+    end
+if @jw_pwd is not null
+    begin
+        update hualitongdb.pwds
+        set jw_pwd = @jw_pwd
+        where pwds_id = @pwds_id
+    end
+end;
+
+
+ insert into hualitongdb.users (wechat_id) values ('o3dl2wZ3YisQO8GW_bd_c-QOWGsQ');
+ insert into hualitongdb.users (wechat_id) values ('o3dl2wZHdvmo1sxQaiKefLRcyr_o');
+ insert into hualitongdb.users (wechat_id) values ('o3dl2wUzmzcr7ZvZ6v7vi_I4Hffw');
+
+
+update hualitongdb.view_wechatpwds 
+set
+ student_num = '10150112',
+ ty_pwd = 'ty961016'
+where wechat_id = 'o3dl2wZ3YisQO8GW_bd_c-QOWGsQ'