Write a query to count the number of invoices  In the SQL Query do the following  In this query, you will be counting the number of Invoices from the INVOICE table. There is no need for Where clause or Order By/Group By clause.

Q: SQL: Create a SQL query that uses a correlated subquery to display the descriptions for products…

A: Given to : Create a SQL query that uses a correlated subquery to display the descriptions for…

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: Complete the following exercise: Alter your student table adding a new column called enroll_date…

A: Alter your student table adding a new column called enroll_date using the datetime data type.…

Q: The sales person gets a bonus pay if their amount exceeds a certain tier level for each year. Write…

A: Given: Here we can see all the required tables salesman, orders, training, bonus_pay we need to use…

Q: Create the following table in your database with the following schema: Table: Products I Column Name…

A: Create table syntax :  CREATE TABLE TABLE_NAME(  column_name  data_type,   column_name  data_type,…

Q: Write an SQL query using the ALTER TABLE and ADD operator to add anattribute named ORDERDATE with…

A: ALTER TABLE command: The ALTER TABLE command is used to add new columns, modify columns in an…

Q: Use SQL Developer or Oracle Live SQL to write the appropriate SQL commands as follows:   )…

A: Below is the required procedure:

Q: b) Write a query to display the patron ID, last name, number of times that patron has ever checked…

A: Algorithm:Join Tables: Join the PATRON and CHECKOUT tables on the Pat_ID to associate patrons with…

Q: You have been told that you need to store the zip code for employees.  Add a column to the EMPLOYEE…

A: Hello student Greetings   In this scenario, we are required to add a new column to the EMPLOYEE…

Q: Create a query that SELECT all of the EMPLOYEES from the EMPLOYEE TABLE that are Mangers.   Include…

A: SQL self join is used to join or compare a table to itself. SQL self joins are used to compare…