Give a query that would benefit from each of the three methods of partitioning: round-robin (the most common), hash partitioning (the second most common), and range partitioning (the third most common).
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Give a query that would benefit from each of the three methods of partitioning: round-robin (the most common), hash partitioning (the second most common), and range partitioning (the third most common).
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- Why it's useful to have index that partially sort a query if it doesn't present all of the results already sorted?In Sql Oracle Apex application, Using GROUPING SETS, write a query to show the following groupings:• department_id, manager_id, job_id• manager_id, job_id• department_id, manager_idHow does range partitioning perform in case of range query and point query? Compare it with round-robin partitioning.
- What is the difference between a UNION query and an EXCEPT (MINUS) query?How do we limit which rows are returned by a query? Give an example.In the SQL Oracle Application Write one query to return the employee_id, job_id, hire_date, and department_id of all employees and a second query listing employee_id, job_id, start_date, and department_id from the job_history table and combine the results as one single output. Make sure you suppress duplicates in the output.
- (A) Write a query which shows the employee IDs that are unique to the employee table. Order the employee IDs in descending order. An employee ID Is the same in both tables if the integer value of the ID matches. (B) We want to add a new column to the employee table. We want to provide a new column with a more complete phone number. Right now the PHONENO column only shows the last 4 digits. We want a new column which is called PHONE and consists of ###-###-####. The last 4-digits are already in the PHONENO column. The first three digits should be 416 and the next three should be 123. To improve clarity in the table, we also want to rename the PHONENO column to PHONEEXT. Show all the commands used to accomplish this, then, select all data for employees who have the last name of 'smith' (case insensitive). (C) Show a list of employee id, names, department, years and job of any employee in the staff table who makes a total amount more than their manager or has more years of service than…Write query of it.Implement a query containing a subquery to display the total number of rentals for the customer (unknown before query) who belongs to the city London. Exact display as the following use sakila as Database Thank you 100% C 103:1 Result Grid I & Filter Rows: Q Search customer_id first_name last_name Rental_Count 252 МАTTIE HOFFMAN 22 512 СЕCIL VINES 26
- Repeat Exercise 4, but this time use the EXISTS operator in your query.Refer to the film and inventory tables of the Sakila database. The tables in this lab have the same columns and data types but fewer rows. Write a query that lists the titles of films with the fewest rows in the inventory table. This query requires a subquery that computes the minimum of counts by film_id: SELECT MIN(count_film_id) FROM ( SELECT COUNT(film_id) AS count_film_id FROM inventory GROUP BY film_id ) AS temp_table; This subquery is provided in the template.SQL Use appropriate clauses and filters to run the query with minimum time complexity. 2. Try to avoid running the queries on unnecessary rows and columns. 3. Share the queries along with a brief description of the code in a python file, so that the results are reproducible. Q1: Write a query to find the students working in a company having more ratings than their seniors EMPLOYEES RATING TABLE student id student name rating senior id designation 1 george 9 3 student 2 micheal 8 4 student 3 mary 6 null senior 4 steve 9 null senior For the above table GEORGE has more rating than his sENIOR