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Example of Merging Rows = MERGE INTO copy_empc USING employees e ON (c.employee_id e employee_id) WHEN MATCHED THEN UPDATE SET c.first_name e. first_name, c.last name
Example of Merging Rows = MERGE INTO copy_empc USING employees e ON (c.employee_id e employee_id) WHEN MATCHED THEN UPDATE SET c.first_name e. first_name, c.last name = e.last_name, c.email = e.email, c.phone_number e.phone_number, c.hire date = e.hire_date, c.job_id = e.job_id, c.salary = e. salary, c.commission_pct = e.commission_pct, c.manager_id e.manager_id, c. department_id = e. department_id WHEN NOT MATCHED THEN INSERT VALUES (e. employee_id, e. first_name, e.last_name, e.email, e.phone_number, e.hire_date, e.job_id, e.salary, e. commission_pct, e.manager_id, e. department_id); Activity 01: Create a table that has some fields similar to employees table. Then insert 5 rows to the new table. Afterwards, merge the new table and the employees table to a new table based on employee number. Activity 01: Create the EMP table based on the following table instance chart.. Name Null? Type ID NUMBER) LAST_NAME VARCHAR2(25) FIRST_NAME VARCHAR2(25) DEPT_ID NUMBER) a. Modify the EMP table to allow for longer employee last names. Confirm your modification. b. Create the EMPLOYEES2 table based on the structure of the EMPLOYEES table. Include only the EMPLOYEE_ID, FIRST_NAME, LAST_NAME, SALARY, and DEPARTMENT_ID columns. Name the columns in your new table ID, FIRST_NAME, LAST_NAME, SALARY, and DEPT_ID, respectively. c. Drop the EMP table. d. Rename the EMPLOYEES2 table as EMP. e. Drop the FIRST_NAME column from the EMP table. Confirm your modification by checking the description of the table
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