feat: added json duality script

Author: jasperan

json-dual.sql

@@ -0,0 +1,60 @@
+drop table if exists emp purge;
+drop table if exists dept purge;
+drop view if exists department_dv;
+
+
+create table dept (
+  deptno number(2) constraint pk_dept primary key,
+  dname varchar2(14),
+  loc varchar2(13)
+) ;
+
+create table emp (
+  empno number(4) constraint pk_emp primary key,
+  ename varchar2(10),
+  job varchar2(9),
+  mgr number(4),
+  hiredate date,
+  sal number(7,2),
+  comm number(7,2),
+  deptno number(2) constraint fk_deptno references dept
+);
+
+create index emp_dept_fk_i on emp(deptno);
+
+insert into dept values (10,'ACCOUNTING','NEW YORK');
+insert into dept values (20,'RESEARCH','DALLAS');
+insert into dept values (30,'SALES','CHICAGO');
+insert into dept values (40,'OPERATIONS','BOSTON');
+
+insert into emp values (7369,'SMITH','CLERK',7902,to_date('17-12-1980','dd-mm-yyyy'),800,null,20);
+insert into emp values (7499,'ALLEN','SALESMAN',7698,to_date('20-2-1981','dd-mm-yyyy'),1600,300,30);
+insert into emp values (7521,'WARD','SALESMAN',7698,to_date('22-2-1981','dd-mm-yyyy'),1250,500,30);
+insert into emp values (7566,'JONES','MANAGER',7839,to_date('2-4-1981','dd-mm-yyyy'),2975,null,20);
+insert into emp values (7654,'MARTIN','SALESMAN',7698,to_date('28-9-1981','dd-mm-yyyy'),1250,1400,30);
+insert into emp values (7698,'BLAKE','MANAGER',7839,to_date('1-5-1981','dd-mm-yyyy'),2850,null,30);
+insert into emp values (7782,'CLARK','MANAGER',7839,to_date('9-6-1981','dd-mm-yyyy'),2450,null,10);
+insert into emp values (7788,'SCOTT','ANALYST',7566,to_date('13-JUL-87','dd-mm-rr')-85,3000,null,20);
+insert into emp values (7839,'KING','PRESIDENT',null,to_date('17-11-1981','dd-mm-yyyy'),5000,null,10);
+insert into emp values (7844,'TURNER','SALESMAN',7698,to_date('8-9-1981','dd-mm-yyyy'),1500,0,30);
+insert into emp values (7876,'ADAMS','CLERK',7788,to_date('13-JUL-87', 'dd-mm-rr')-51,1100,null,20);
+insert into emp values (7900,'JAMES','CLERK',7698,to_date('3-12-1981','dd-mm-yyyy'),950,null,30);
+insert into emp values (7902,'FORD','ANALYST',7566,to_date('3-12-1981','dd-mm-yyyy'),3000,null,20);
+insert into emp values (7934,'MILLER','CLERK',7782,to_date('23-1-1982','dd-mm-yyyy'),1300,null,10);
+commit;
+
+create or replace json relational duality view department_dv as
+select json {
+             '_id' : d.deptno,
+             'departmentName'   : d.dname,
+             'location'         : d.loc,
+             'employees' :
+               [ select json {'employeeNumber' : e.empno,
+                              'employeeName'   : e.ename,
+                              'job'            : e.job,
+                              'salary'         : e.sal}
+                 from   emp e with insert update delete
+                 where  d.deptno = e.deptno ]}
+from dept d with insert update delete;
+commit;
+exit;