Express the following query in SQL using no subqueries and no set operations.select IDfrom studentexceptselect s idfrom advisorwhere i ID is not null

Execute a SQL statement to add a check constraint to the field mode_of_payment with values ('D', 'R' or 'C") in order_db

order db orderid int custid int itemcode int orderquantity int deliverydate date modeofpayment char(1) date_of_order date

What are examples of aggregate functions in SQL?

What are the potential issues with over-relying on the COALESCE function in SQL?

Is this statement true or false: Oracle SQL allows full expression-based use of both provided (built-in) and user-definable functions.

Please help with the following: Using oracle sql live or sql developer what sql statements could be use to find the following: A simple database composed of the following tables: PATIENT, DOCTOR, DRUG, and PRESCRIPTION. Please explore the database and then write the appropriate SQL command. List doctor’s details where speciality is either Dermatology or Neurology. (Use INoperator). List the results by the first name in ascending order and the last name indescending order. Find all patients rows whose first names include ‘George’ (Assume case sensitivity). sql doc below Beginfor c in (select table_name from user_tables) loopexecute immediate ('drop table '||c.table_name||' cascade constraints');end loop;End;//* */ ALTER SESSION SET NLS_DATE_FORMAT = 'MM/DD/YYYY';CREATE TABLE DOCTOR (DOC_ID varchar2(5) PRIMARY KEY,DOC_LNAME varchar2(15),DOC_FNAME varchar2(15),DOC_INITIAL varchar2(1),DOC_SPECIALTY varchar2(15));INSERT INTO DOCTOR…

Write an SQL query to extract the answer directly.

Instructions: Write the suitable SQL statement to answer the following questions based on the following tables ( image for better table) Table Name: Employee EMP_ID             FNAME               LNAME               SALARY         JOIN_DATE              DEP_NO                     101                  John                  Abraham            10000                   01-JAN-13          11             202                  Michael                 Clarke                80000                  01-JAN-13          22            303                       Roy                   Thomas              70000                  01-FEB-13          11             404                     Tom                       Jose                  60000                   01-FEB-13          22             505                        Jerry                    Pinto                 65000                   01-FEB-13               22             606                    Philip                  Mathew              75000…

1.What is the result when the following SQL query is executed on a table named products? Choose the most correct answer. SELECT AVG(Products)FROM Products; Group of answer choices The query results in an error because the is no AVG function None of the above The query results in an error be cause a column is not specified The query returns the average of the Products table   2. If the primary key in the Employee table is located in the "ID" column what is the maximum number of results the following SQL SELECT query will return? SELECT *FROM EmployeeWHERE ID = 15; Group of answer choices 2 1 3 Do not have enough information to determine the answer 0