Write SQL code that returns the EMP_NUM and Number of ratings he/she earned (based on EARNEDRATING table, call this Num_RTG), for those who had at least got 1 rating earned, but the number of ratings he/she earned must lower than the average number of ratings for all employees who had earned ratings before, and such employee has been served as “Copilot” before.

Q: Display the list of students who are involved in the IT club Display the details of all the…

A: First get the studid from Club table and then get those Student details This can be done using inner…

Q: Execute the SQL statement. SELECT count(*) as "Total Customers" FROM customers; SELECT…

A: SELECT count(*) as "Total Customers"FROM customers;   SELECT count(distinct category_name) as…

Q: Please see the attached sql function question requiring an sql function to be written to calculate a…

A: alter session set plsql_code_type=native; CREATE FUNCTION mortgage_rate( p_principal…

Q: Difference between count (*) and count (col_name). Explain with an example.

A: The above question is solved in step 2 :-

Q: Just let me know what to write for the SQL theory: Question:  Write a query to display the first…

A: Solution:   Given,

Q: Write the SQL code that will compute the total number of hours worked and total amount billed by all…

A: To compute the total number of hours worked and total amount billed by all workers, we need to have…

Q: in pl/sql ,use Cursor to get all the records from table  job_history for employee_id 121

A: pl/sql code for the above question is solved in step 2:- assume table job_history has columns…

Q: Write SQL query that returns the Name of ALL employees (based on EMP_LNAME and EMP_FNAME in EMPLOYEE…

A: Answer:  SQL queries=> 1) For getting EMP_NAME from EMP_FNAME and EMP_LNAME Select…

Q: All books that are checked out are due back in two weeks, with no exceptions. The late fee is 50…

A: Answer is given below-

Q: Write the T-SQL scripts for the following tasks:   Write a query to select the employees whose…

A: Please refer to the following step for the complete solution of the problem above.

Q: Write SQL statements to list the name of Lee’s subordinate employee.    (Data Update)     Write…

A: Lees Employee ID is 2 So, to get the lees subordinate then we need to search for this employee ID in…

Q: I might have missing something to add. Here are the steps I need help: Write the SQL code that will…

A: Given: I might have missing something to add. Here are the steps I need help: Write the SQL code…

Q: Write a SQL code that returns the Name of ALL Customers (based on CUS_FNAME and CUS_LNAME in…

A: The question is solved in step2

Q: How does the RANK() function differ from DENSE_RANK() in SQL when ranking data?

A: Data ranking in SQL is accomplished using both the RANK() and DENSE_RANK() methods. They are…

Q: Write SQL code for  To Extend the code in ( Perform a LEFT OUTER JOIN between the tables…

A: SQL (Structured Query Language) It is a domain-precise language utilized in programming and…

Q: Write two sql queries:- 1. Find out the 4th highest salary. 2. Find out 7th lowest salary. CREATE…

A: Finding the fourth-highest and seventh-lowest salaries in the employee table. This entails examining…

Q: Write PL/SQL or T-SQL procedures to accomplish the following tasks: A: obtain the name and credit…

A: Actually, SQL stands for Structured Query Language.

Q: Write the SQL code that will list all of the drivers in the database that have been issued tickets.…

A: We will use the MySQL codes to find all the data asked in the question.

Q: Write and execute a SQL query to list all patient numbers and encounter ids which do not have any…

A: Actually, SQL stands for Structured Query Language.

SQL

SQL stands for Structured Query Language, is a form of communication that uses queries structured in a specific format to store, manage & retrieve data from a relational database.  

Queries

A query is a type of computer programming language that is used to retrieve data from a database. Databases are useful in a variety of ways. They enable the retrieval of records or parts of records, as well as the performance of various calculations prior to displaying the results. A search query is one type of query that many people perform several times per day. A search query is executed every time you use a search engine to find something. When you press the Enter key, the keywords are sent to the search engine, where they are processed by an algorithm that retrieves related results from the search index. Your query's results are displayed on a search engine results page, or SER.