Updating inside an oracle function Free sex chat on mobile phone

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The event can be any of the following: specifies that the trigger is a row-level trigger.

A row-level trigger fires once for each row inserted, updated, or deleted.

As you can see we just added one line, the rest of the query is unchanged.

One thing to remember is that the analytic function is parsed after the SELECT and WHERE clause, but before the ORDER BY clause. For the result of your query you PARTITIONED it by department_id and ordered the results for each department.

And then OVER this subset of your data, the ROW_NUMBER function is executed, resulting in a rownumbering foreach item in the subset of data.

Notice in the Row Num result that all numbers are unique for a department.

The advantage of the latter is that repeated references to the subquery may be more efficient as the data is easily retrieved from the temporary table, rather than being requeried by each reference.

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What if we also want to pull back each employees manager name and the number of people in the managers department? -- Non-ANSI Syntax SELECT e.ename AS employee_name, dc1.dept_count AS emp_dept_count, m.ename AS manager_name, dc2.dept_count AS mgr_dept_count FROM emp e, (SELECT deptno, COUNT(*) AS dept_count FROM emp GROUP BY deptno) dc1, emp m, (SELECT deptno, COUNT(*) AS dept_count FROM emp GROUP BY deptno) dc2 WHERE e.deptno = dc1.deptno AND = m.empno AND m.deptno = dc2.deptno; -- ANSI Syntax SELECT e.ename AS employee_name, dc1.dept_count AS emp_dept_count, m.ename AS manager_name, dc2.dept_count AS mgr_dept_count FROM emp e JOIN (SELECT deptno, COUNT(*) AS dept_count FROM emp GROUP BY deptno) dc1 ON e.deptno = dc1.deptno JOIN emp m ON = m.empno JOIN (SELECT deptno, COUNT(*) AS dept_count FROM emp GROUP BY deptno) dc2 ON m.deptno = dc2.deptno; -- Non-ANSI Syntax WITH dept_count AS ( SELECT deptno, COUNT(*) AS dept_count FROM emp GROUP BY deptno) SELECT e.ename AS employee_name, dc1.dept_count AS emp_dept_count, m.ename AS manager_name, dc2.dept_count AS mgr_dept_count FROM emp e, dept_count dc1, emp m, dept_count dc2 WHERE e.deptno = dc1.deptno AND = m.empno AND m.deptno = dc2.deptno; -- ANSI Syntax WITH dept_count AS ( SELECT deptno, COUNT(*) AS dept_count FROM emp GROUP BY deptno) SELECT e.ename AS employee_name, dc1.dept_count AS emp_dept_count, m.ename AS manager_name, dc2.dept_count AS mgr_dept_count FROM emp e JOIN dept_count dc1 ON e.deptno = dc1.deptno JOIN emp m ON = m.empno JOIN dept_count dc2 ON m.deptno = dc2.deptno; WITH dept_count AS ( SELECT /* MATERIALIZE */ deptno, COUNT(*) AS dept_count FROM emp GROUP BY deptno) SELECT ...SELECT d.department_name, e.last_name, e.salary FROM employees e, departments d WHERE e.department_id = d.department_id AND d.department_id IN ('20','30', '40') ORDER BY d.department_name, e.salary, e.last_name; DEPARTMENT LAST_NAME SALARY ---------- ---------- ------- Human Reso Mavris 6500 Marketing Fay 6000 Marketing Hartstein 13000 Purchasing Colmenares 2500 Purchasing Himuro 2600 Purchasing Baida 2900 Purchasing Tobias 2900 Purchasing Khoo 3100 Purchasing Raphaely 11000 9 rows selected.HRSELECT d.department_name, e.last_name, e.salary , ROW_NUMBER() OVER ( PARTITION BY e.department_id ORDER BY e.salary) AS rownumber FROM employees e, departments d WHERE e.department_id = d.department_id AND d.department_id IN ('20','30', '40') ORDER BY d.department_name, e.salary, e.last_name, rownumber; DEPARTMENT LAST_NAME SALARY ROWNUMBER ---------- ---------- ------- ---------- Human Reso Mavris 6500 1 Marketing Fay 6000 1 Marketing Hartstein 13000 2 Purchasing Colmenares 2500 1 Purchasing Himuro 2600 2 Purchasing Baida 2900 3 Purchasing Tobias 2900 4 Purchasing Khoo 3100 5 Purchasing Raphaely 11000 6 9 rows selected.It’s no new feature in 11g but it’s worth to describe it.Package DBMS_TRACE enables to trace execution of PL/SQL code in database.

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