Question

What methodologies could you use to improve the performance of a SQL query?

What methodologies could you use to improve the performance of a SQL query?

Homework Answers

Answer #1

`Hey,

Note: Brother if you have any queries related the answer please do comment. I would be very happy to resolve all your queries.

Methodologies to increase SQL performance are:

  1. Optimize queries based on the query optimization guidelines
  2. Push predicates into the OUTER JOIN clause whenever possible

  3. Duplicate constant condition for different tables whenever possible

  4. Using nested table definitions to replace workspaces views

  5. Splitting queries

  6. Using common expression syntax

Kindly revert for any queries

Thanks.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
When using Spark SQL to run a query, what happens if you get a parse exception?...
When using Spark SQL to run a query, what happens if you get a parse exception? Explain
What SQL syntax could you use to filter date ranges in your dataset?
What SQL syntax could you use to filter date ranges in your dataset?
What are 3 areas that RDBMS runtime execution can be improved when running a SQL query?
What are 3 areas that RDBMS runtime execution can be improved when running a SQL query?
Build an SQL query to answer the following questions: What is the number of students tutored...
Build an SQL query to answer the following questions: What is the number of students tutored by each tutor? If the tutor has not tutored any student, your result should show 0 as the number of students tutored.
Could a matrix structure improve performance for an organization familiar to you? How can the disadvantages...
Could a matrix structure improve performance for an organization familiar to you? How can the disadvantages of group decision making hurt team structures?
Discuss what tactics you would use to improve WOW's governance or performance if you believe WOW...
Discuss what tactics you would use to improve WOW's governance or performance if you believe WOW is an attractive activism target. Note: WOW -> Woolworths
Write an SQL query to display the name of day spelled out in English (e.g., Monday,...
Write an SQL query to display the name of day spelled out in English (e.g., Monday, Tuesday,…) of your date of birth . Hint: use TO_CHAR () and TO_DATE () to convert between strings and dates.
Consider the Goldstar database and the query below. What will the query display? SELECT city, COUNT(performance)...
Consider the Goldstar database and the query below. What will the query display? SELECT city, COUNT(performance) AS TotalEmployees FROM location, employee WHERE location.location_id = employee.location_id GROUP BY city; ? The total number of employees in each city that have NOT received performance ratings The total number of employees in each city The total number of employees in each city that have received performance ratings None of the other answers provided is correct
You query data from emp2 table with below SQL statement: SQL> SELECT *     FROM  emp2; NAME SSN...
You query data from emp2 table with below SQL statement: SQL> SELECT *     FROM  emp2; NAME SSN ------------- ------------------------ Joe 452852452 Mary 444525962 Fred 445212525 Tom 492525252 Lucy   172826152   Now, you query data from emp2 table with below SQL statement again: SQL> SELECT AVG(LENGTH(name)) AS column1, SUM(INSTR(ssn, '%@',2,2)) AS column2 FROM  emp2 WHERE name = INICAP(name); What will be displayed for the output of column1 and column2? A. The value in column1 will be 3.5 and the value in column2 will be...
Assignment 2 Instructions You need to access to the database and write SQL queries on the...
Assignment 2 Instructions You need to access to the database and write SQL queries on the following site: https://www.w3schools.com/sql/trysql.asp?filename=trysql_op_in 1. Use INNER JOIN to create a report. In this report, list each customer’s CustomerID, CustomerName, and their each OrderID and each order’s OrderDate, if the customer has ever placed an order. You should use the Customers table and the Orders table in the database to complete this query.   2. Use INNER JOIN to create a report. In this report, list...