My resualt has error? SELECT last_name,customer_number 2 from CUSTOMERS WHERE REFERRED is not null; SELECT last_name,customer_number * ERROR at line 1: ORA-00904: "CUSTOMER_NUMBER": invalid identifier List all customers who were referred to the bookstore by another customer. List each customer’s last name and the number of the customer who made the referral.

Q: Which of the following queries displays the sum of all employee salaries for those employees not…

A: Question. Which of the following queries displays the sum of all employee salaries for those…

Q: Which of the following keywords and relational operators is used by SQL when performing wildcard…

A: LIKE is the keyword and relational operator is used by SQL when performing wildcard matches Example:…

Q: Which of the following is a valid SQL statement? (refer to the tables in the JustLee Books…

A: Valid SQL statement The SELECT statement is used to select data from a database. It returns a…

Q: You need to find out the names of all employees who belong to the same department as the employee…

A: Before solving the answer lets clearly understand the question:- There are two tables employee and…

Q: Q2: Do these queries: 1. Show department name and instructor name who is having salary greater than…

A: Due to company policies I am compelled to solve only one question and that is the first question.…

Q: Fix the ERROR 1064 (42000) at line 2: You have an error in your SQL syntax; check the manual that…

A: The given problem is related to MYSQL database DDL statemnt where the error has been shared and the…

Q: Use SQL to insert the values NULL, prod1, and $9.99 into the PRODUCTS table

A: *As per the company norms and guidelines we are providing first question answer only please…

Q: Which of the following sql statements contains an error? I) Select * from employee; II) Select *…

A: The correct answer is...

Q: (1)Fix the ERROR 1064 (42000) at line 2: You have an error in your SQL syntax; check the manual that…

A: Pease find the answers in the below steps.

Q: This does not work: CREATE OR REPLACE TRIGGER trg_char_hours AFTER INSERT ON CHARTER FOR EACH ROW…

A: Question: This does not work: CREATE OR REPLACE TRIGGER trg_char_hoursAFTER INSERT ON CHARTERFOR…

Q: Which SQL statement returns customers with creditlimit less than or equal to 2000 (Creditlimit is a…

A: We need to answer:

Q: The tblCities table contains a numeric field named Population. Which of the following LINQ…

A: The LINQ statement that selects all cities having a population that exceeds 15000 is below, Dim…

Q: 4. Display customer ID, customer name, and the order ID and the order date of all orders for…

A: 4) SELECT c.CUSTOMER_ID, c.NAME, o.ORDER_ID, o.ORDER_DATE, oi.QUANTITY AS "Total Items",…

Q: Which of the following does NOT belong to the SQL Number Functions? a. MOD b. TRIM c. TRUNC d. ROUND

A: In SQL TRUNCATE() Number Function is Used Not TRUNC.

Q: Which query returns the first 3 characters of last name of the manager who work with employee named…

A: Basic knowledge of SQL is required to solve this problem.

Q: Which of the following does NOT belong to the SQL Date Functions? a. LAST_DAY O b. ADD_MONTHS O c.…

A: Date functions in SQL: The queries in SQL work fine as long as data contains only the date portion,…

Q: Which operator should you employ in order to locate NULL values?

A: IS NULL operator is used to locate NULL values

Q: 8- Write a query to generate the total number of invoices, the invoice total for all of the…

A: SQL is a language to operate databases in searching and filtering the data according to the query

Q: Orders Columns: order_id (int), order_no (char(30)), customer_name (char(100)) Order_Line Columns:…

A: Given that two tables data . Orders tabel contains : order_id(int), order_no(char(30)),…

Q: 4a) Write an SQL command that will create Customer table which shown in below. Customer custID…

A: Hello Student Greetings Hope you are doing great. I will try my best to answer your question. Thank…

Q: Need assistance with SQL assignment question: Populate the CUST_NUM, INV_DATE, and INV_AMOUNT…

A: To insert data into table, there must be a table So, first of all create a table and then execute…

Q: Which comparison operators are required for subqueries with many rows?

A: Subqueries that return many rows of results are known as multiple-row subqueries. IN, ALL, ANY, and…

Q: Write an anonymous block that will display only positive numbers between 1 and 20.With PL/SQL co

A: PL/SQL Code is as given below : DECLARE num1 NUMBER := &get_num; BEGIN IF num1 < 0 THEN…

Q: my SQL Server command is giving  me errors how do i fix it? CREATE FUNCTION FN_TOTALUNITCOST()…

A: SQL Server is a relational database management system developed by Microsoft. As a database server,…

Q: Q4: Customer has made an order from spare parts company where an order form shown below posted to…

A: Hello student I am giving this solution as per my best of knowledge :-

Q: To locate NULL values, which operator should you use?

A: An operator is a special symbol in an SQL statements' WHERE clause which performs operations on…

Q: CREATE TABLE HOTEL ( BEDROOMS   INT NOT NULL,   AVG_SQUARE_FEET    DECIMAL(19, 4) NOT NULL…

A: SQL stands for the structured query language. It enables users to manage relational database…

Q: According to the “Orders" table below, which of the following will output the customers who made…

A: Question :-

Q: Which SQL statement will return the same results as the following SQL statement? SELECT * FROM…

A: Answer: Option 2,3, and 4 are having the where conditions will give the different results

Q: Q4: Customer has made an order from spare parts company where an order form shown below posted to…

A: Hello student I am giving this solution as per my best of knowledge :-

Q: Which of the following keyword is used in PL/SQL to initialize variables?     %ROWTYPE…

A: b) DEFAULT

Q: You need to find out the names of all employees who belong to the same department as the employee…

A: The correct answer along with the explanation is given below.

Q: Which of the following calculates a 10% commission on the values in the Sales field and then stores…

A: The below statement calculates a 10% commission on the values in the Sales field andthen stores the…

Q: Write an anonymous block that will display only positive numbers between 1 and 20. p

A: Actually, SQL stands for structured query language.

Q: Which equation will count the number of traffic incidents on the one day, 65 days from the most…

A: Query to get count of number of traffic incident on the same day , 65 days from most recent .

Q: They need all the service requests with the category of Plumbing (category number 1) and Heating…

A: The given requirement is to be solved in the form of SQL command where the only service requests are…

Q: Display user name and their city who have booked their tickets not by using HDFC bank for any of the…

A: According to the given question we are required to find user name and their city who booked hotel by…

Q: Replace 456 with your last 3 digits in your student number The procedure must have: an input…

A: Code is given below.        drop table VECHICLERENT;   CREATE TABLE VECHICLERENT (   VEHICLE_ID…

Q: Which of the following functional dependencies does NOT exist in the table ENROLLMENT? ENROLLMENT…

A: Functional dependency: ==> Functional Dependency (FD) is a constraint that determines the…

Q: Which of the following operators is used when the subquery returns at least one row? Select one:…

A: Exists - The exists operator returns true if it fetch atleast one record  from the subquery…

Q: In the below given query, which expression is evaluated first? SELECT id_number, (quantity – 100 /…

A: Question. In the below given query, which expression is evaluated first? SELECT id_number, (quantity…

Q: the employee table have the following . ask user what is the employee_id and how much employee…

A:

Q: What's wrong with my SQL code? It doesn't run. The SQL files are in the images attached. Queries…

A: Select queries return rows, from a table or a join of multiple tables, which match certain…

Q: ORACLE SQL - I have this code and I am getting the error message that there is an error near: WHERE…

A: Let us see the solution below,

Q: is the sql code .and it have error . CREATE or replace PROCEDURE CONVERT_VAL(&v1 varchar2(2),…

A: I have updated your code added code to execute this code fragment.

Q: Which of the following operators are used in the Multi-Row subquery? a. SUM, MIN, MAX, AVG O b. ANY,…

A: In multiple row subquery the following operators are used: IN, ALL, ANY

Q: Which one of the following SQL select statements will display a list of all vendors that do not yet…

A: select vend_code, vend_name from vendor where vend_name IS NULL;

Q: HOW TO FIX THIS CODE IN ORACLE SQL ? CREATE OR REPLACE PROCEDURE CONVERT_VAL(V1 VARCHAR,V2…

A: Here i mention the error of the code:…