Concept explainers
WHERE Statement:
“WHERE” statement is used limit the number of rows. For example:Consider a table “FTable” that has two columns named “FruitName” and “Color”. “WHERE” clause is used when there is a need to display the entire FruitName whose color is Red.
SELECT * FROM FTable WHERE color = 'red';
When the above statement is executed, red colored fruits get displayed.
ORDER BY Clause:
SQL contains “ORDER BY” clause in order to sort rows. The values get sorted in ascending as well as descending order. The keyword used to sort values in ascending order is “ASC” and for descending order is “DESC”. By default, it sorts values by ascending order.
Syntax:
SELECT column_Name1, column_Name2 FROM table_Name ORDER BY column_Name2;
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Chapter 5 Solutions
A Guide to SQL
- The data table is off by its numbers, help me fix pleasearrow_forwardYou will be using the Colonial Adventure Tours database. List the trip IDs and trip names for each pair of trips that have the same start location.(You will need to assign an alias). The first trip id should be the major sort key, and the second trip id should be the minor sort key.arrow_forwardSBN Title Author 12345678 The Hobbit J.R.R. Tolkien 45678912 DaVinci Code Dan Brown Your student ID DBS311 Your Name use the following statement to Write a PL/SQL Function that accepts 4 parameters, 2 strings representing students names, and 2 integers representing the marks they received in DBS311. The function will determine which student had the higher mark and return the name of the student. If the marks were the same, then return the word "same" and return "error" if an error occurs or the calculation can not be determined.arrow_forward
- calculate_new_balance Given a starting balance (a number), and a list of transaction tuples, calculate the final balance for an account. Transaction tuples are of the shape ("description", amount, "withdrawal") , or ("description", amount, "deposit"). The last entry in the tuple will be either "withdrawal" or "deposit". Every withdrawal decreases the balance of the account by the specified amount, and every deposit increases the balance. The return value is the new account balance, as a number. (which could be negative) Sample calls should look like: >>> calculate_new_balance(100, [("payday", 20, "deposit"), ("new shoes", 50, "withdrawal"), ("illicit winnings", 200, "deposit")])270>>> calculate_new_balance(100, [])100arrow_forward11.use the following picture to answer the question below Show Customer name (concatenate First Name and Last Name with a space between) and total number of orders for each customer. Name the total number of orders column as 'NumberOfOrders'. Sort based on Number of orders in descending order.arrow_forwardFind the first names and last names of employees if they got a salary increase more than 10% in the first month of 2000 together with their salary change dates, old salaries, new salaries, and increase percentages in descending order by their increase percentages.arrow_forward
- Why it's useful to have index that partially sort a query if it doesn't present all of the results already sorted?arrow_forwardindividual characters using their 0-based index. Hint: You will need to do this for checking all the rules. However, when you access a character .arrow_forwardThis dataset “Birthweight_reduced_kg_R" contains information on new born babies and their parents. In the following a description of each variable is given: Name Variable Baby number Length of baby (cm) Weight of baby (kg) headcirumference Head Circumference ID length Birthweight Gestation Gestation (weeks) smoker Mother smokes 1 = smoker 0 = non-smoker motherage Maternal age Number of cigarettes smoked per day by mother mnocig Mothers height (cm) Mothers pre-pregnancy weight (kg) Father's age mheight mppwt fage Father's years in education Number of cigarettes smoked per day by father fedyrs fnocig Father's height (kg) Low birth weight, 0 = No and 1 = yes Mother over 35, 0 = No and 1 = yes fheight lowbwt mage35 Task 1: Load the csv file into Python environment and get the required columns to be used as x and y. Task 2: Use correlation coefficient to find and discuss the following: 1. Relationship between maternal height and baby length. 2. Relationship between mother's pre-pregnancy…arrow_forward
- SQL: Create a SQL query that uses an uncorrelated subquery and no joins to display the descriptions for products provided by a vendor in area code 615. Remember, the main difference between a correlated subquery and uncorrelated subquery is that, in a correlated subquery, the inner query is dependent upon the outer query, while, with an uncorrelated query, the inner query does not depend upon the outer query. Instead, it runs just once. You should NOT use union, minus, or intersect in this query. The outer query will use the PRODUCT table and the inner query will use the VENDOR table [hint: you should have 9 records of output]. My code: select p_descript from product where (select v_areacode from vendor where v_areacode = '615' ; I am getting this error, problem is I can't see what is missing any assistance is appreciated. ORA-00936: missing expressionarrow_forwardMake a list of authors and books they wrote, using book ISBN number only,sort by author# or authorID.arrow_forwardDisplay Customer name (concatenate First Name and Last Name with a space between) and total number of orders for each customer. Name the total number of orders column as 'NumberOfOrders'. Sort based on Number of orders in descending order.arrow_forward
- A Guide to SQLComputer ScienceISBN:9781111527273Author:Philip J. PrattPublisher:Course Technology PtrNp Ms Office 365/Excel 2016 I NtermedComputer ScienceISBN:9781337508841Author:CareyPublisher:Cengage