a) Your task is to write a SQL query to find count of employee who does not have a manager in the above given table schema?

What are examples of aggregate functions in SQL?

I NEED HELP WITH THIS QUESTION FOR MY DATABASE MANAGEMENT CLASS FOR SQL DEVELOPER In reporting total_sale by each REP including those who made no sale, which Table joins should be left join. And how to show zero in your report instead of null for reps with no sale.

Several new built-in operations are available in SQL;2008. To simplify, just enumerate the four (4) applications.

Assuming all tables and columns exist, in which of the following SQL can the HAVING clause be written as a WHERE clause? SELECT a, count(*) FROM xyz GROUP BY a HAVING a = 34 SELECT a, count(*) FROM xyz GROUP BY a HAVING count(*) = 34 SELECT a, sum(c) FROM xyz GROUP BY b HAVING sum(c) < 0 SELECT c, min(a), max(b) FROM xyz GROUP BY c HAVING min(a) =max(b)

Question: Which colleges offer courses?    (Change the SQL query to an relational algebra query.) **Please show the resulting tuples output based on your answer as well in a table for further explanation.  ** SELECT COURSE.COLLEGE FROM COURSE, DEPARTMENT WHERE COURSE.DCODE = DEPARTMENT.DCODE;

write sql statement to modify the position table in order to define a constraint to ensure that the column position receive only values salad rep or manager course hero

I need help with the SQL query for the following question: 1. What is the total number of reviews in every zip code. Here is the information on the field names: The table name is:  Reviews Review Form Fields Product/ModelName: Product/Category: Product/Price: Retailer/Name: Retailer/ZipCode: Retailer/City: Retailer/State: Product/On Sale: Manufacturer/Name: Manufacturer/Rebate: Review/UserId: Review/Rating: Review/Date: Review/Text: Example of Review Form Filled out ProductModelName: Galaxy S4 ProductCategory: Smart Phone ProductPrice: 499 RetailerName: Bestbuy RetailerZipCode: 44114 RetailerCity: Cleveland RetailerState: OH ProductOnSale: No ManufacturerName: Samsung ManufacturerRebate: No ReviewUserId: xmm473 ReviewRating: 3 ReviewDate: 6/10/2012 ReviewText: overheats after 2 hours

My SQL WORKBENCH **Please note that you may actually use as many tables as you need. You are not limited to use only twotables.Example:SELECT *FROM DEPARTMENTS;SELECT *FROM EMPLOYEES;Now join departments and employees tables.SELECT FIRST_NAME, DEPARTMENT_NAMEFROM EMPLOYEES, DEPARTMENTSWHERE EMPLOYEES.DEPARTMENT_ID = DEPARTMENTS.DEPARTMENT_ID;NOTE: If you omit the join condition, the result will be the Cartesian Product of the two tables. A CartesianProduct joins all rows of the first table with all rows of the second table.That is if the first table has n rows and the second table has m rows, the output will have n*m rows.The following query will produce a Cartesian Product:SELECT FIRST_NAME, DEPARTMENT_NAMEFROM EMPLOYEES, DEPARTMENTS;**When table names are long, qualifying column names might be very time consuming. Usually peopleprefer to use table aliases for this purpose.Example: List the name of all employees who work for 'Purchasing' departmentSELECT E.FIRST_NAME "EMPLOYEE…

What potential problems might arise when using non-deterministic functions in SQL?