problem i need a solution for: What is the average unit price?
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Please view both attachments before answering. The attachment is the table and its contents. I am unsure on how i can go about attempting the question. i need a SQL query to fetch average. I am using mysql terminal. Please explain in detail so i can fully understand . Thank you so much in advance!
problem i need a solution for: What is the average unit price?
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- DataBaseMid2021-2.doc [Compatibility Mode] - Word Sign in Table Tools File Home Insert Design Layout References Mailings Review View Help Design Layout O Tell me what you want to do 요 Share SECOND OUENIVAR The following Data Base shows some sample data values for an extended form of the Zoo and Visitors. The significance of Visiting row is that the Visitor visits a specified Zoo in a specified date. Zoo : Zno zi Visitors : City Gaza Nusirat Yno Name Address Age V1 Fuad Gaza 55 Z2 V2 Rami Gaza 20 Z3 Gaza V3 Ahmed Nusirat 31 V4 Ahmed Gaza 45 V5 Ali Rafa 20 Visiting: Vno Zno Z1 Date V2 11-11-1998 15-10-1999 V1 Z3 11-01-2003 11-01-2003 06-03-1997 V2 Z2 V2 Z3 V1 Z2 V3 Z1 06-031997 V3 Z3 11-11-2005 V4 Z3 11-11-2005 V2 Z2 12-12-2005 Given the following relational Algebra querya Visitors Þyisitora.Nno = Visiting.VnolIIxna.Znal Visiting) A IIzag [8 City = “Caza' ( Zoo)]1 A- Find the result relation of the above query B What was the request of the relational algebra query above (make a query…mysql> DESC bookauthor; mysql> DESC author; mysql> DESC book; | Field | Туре | Field | Туре | Field Тур | int(11 | varchai author_order | int(11 royaltyshare | decima: author_id isbn | author_id | int(1: | ssn lastname | firstname | varch: | phone | address | city | state | zip | varch: | varch: isbn var I name | type pub_id I price | advance I ytd_sales I pubdate var var | varch: | varch: | varch: | varch: | varch: | int dec | dec int mysql> DESC bookeditor; | dat | Field | Туре mysql> DESC editor; mysql> DESC publisher; editor_id | int(11) | varchar(1 | Field isbn | Field | Туре editor_id ssn pub_id | int(11) | varchar(40) varchar(40) varchar(20) varchar(2) lastname name firstname address | phone editor_position salary | city stateWrite Mysql code for: The database has three tables for tracking horse-riding lessons: Horse with columns: ID - primary key RegisteredName Breed Height BirthDate Student with columns: ID - primary key FirstName LastName Street City State Zip Phone EmailAddress LessonSchedule with columns: HorseID - partial primary key, foreign key references Horse(ID) StudentID - foreign key references Student(ID) LessonDateTime - partial primary key Write a SELECT statement to create a lesson schedule for Feb 1, 2020 with the lesson date/time, student's first and last names, and the horse's registered name. Order the results in ascending order by lesson date/time, then by the horse's registered name. Make sure unassigned lesson times (student ID is NULL) appear in the results. Hint: Perform a join on the LessonSchedule, Student, and Horse tables, matching the student IDs and horse IDs.
- • Write a simple stored function that Takes a gender as an input ● Find the staff whose gender matches the input Return the results Write a simple stored procedure that Takes a gender as an input Find the staff whose gender matches the input • Print the resultsSQL: 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 expressionLet's make the relationship between shows and networks N:N (a many-to-many relationship), i.e. each show can be associated with multiple networks, and each network has many shows). First, we need to create a junc- tion table. Do the following, preferably using only one SQL command: а. Create a junction table named show_network ,with show_id and net_id as fields. b. Make the primary key of the show_network table a composite key, made up of both fields. For syntax help, see here: https://www.w3schools.com/sgl/sql primarykey.asp Make two foreign key constraints, one for show_id and one for net_id, to reference the tables shows and networks respectively. C. Take a screenshot now and paste it here.
- Cascading Referential Integrity Constraint defines rules about how referencing tuples are affected when referenced tuples are deleted. In SQL Server Management Studio, while specifying Cascading Referential Integrity Constraint (Delete/Update Rules) you have four options: (1) ______________ _________ (2) ___________ ___________, (3) ______________ _________ (4) ___________ ___________.Write Mysql code The database has three tables for tracking horse-riding lessons: Horse with columns: ID - primary key RegisteredName Breed Height BirthDate Student with columns: ID - primary key FirstName LastName Street City State Zip Phone EmailAddress LessonSchedule with columns: HorseID - partial primary key, foreign key references Horse(ID) StudentID - foreign key references Student(ID) LessonDateTime - partial primary key Write a SELECT statement to create a lesson schedule with the lesson date/time, horse ID, and the student's first and last names. Order the results in ascending order by lesson date/time, then by horse ID. Unassigned lesson times (student ID is NULL) should not appear in the schedule. Hint: Perform a join on the Student and LessonSchedule tables, matching the student IDs.MariaDB [dreamhome]> select * from Staff1; | staffNo | FName | 1Name | position | sex | Mary | Howe | | David | Ford | | Ann | Beech | Susan | Brand | Assistant | F Supervisor | M Assistant | F Manager | F | | John | White | Manager | M | Julie | Lee | Assistant | F | SA9 | SG14 | SG37 Find all staff fname and direct supervisor's fname. | SG5 | SL21 | SL41 | staff | supervisor | | Mary | Susan | David | Susan | Ann | Susan | Susan | John | Julie | John Output salary | branchNo | superno | | SG5 | SG5 | SG5 | DOB | | 1970-02-19 | 9000.00 | B007 | 1958-03-24 | 18000.00 | B003 | 1960-11-10 | 12000.00 | B003 1940-06-03 | 24000.00 | B003 | 1945-10-01 | 30000.00 | B005 | 1965-06-13 | 9000.00 | B005 SL21 | NULL | SL21
- PL/SQL Block DECLARE v_weight NUMBER (3) := 600; VARCHAR2 (255) v_message := 'Product 10012'; BEGIN DECLARE v_weight NUMBER ( 3) := 1; v_message VARCHAR2 (255) :- 'Product 11001'; v_new_locn VARCHAR2 (50) := 'Europe'; BEGIN v_weight := v_weight + 1; v_new_locn := 'Western ' || v_new_locn; 1) END; v_weight := v_weight + 1; v_message :- v_message || ' is in stock'; v_new_locn := 'Western ' || v_new_locn; 2) END; racle Academy nly 1. Evaluate the preceding PL/SQL block and determine the data type and value following variables according to the rules of scoping. a. The value of v_weight at position 1 is: each of the b. The value of v_new_locn at position 1 is: c. The value of v_weight at position 2 is: d. The value of v_message at position e. The value of v_new_locn at position .How do you index a CLOB datatype for faster search operations?2. Get the Groups As new students begin to arrive at college, each receives a unique ID number, 1 to n. Initially, the students do not know one another, and each has a different circle of friends. As the semester progresses, other groups of friends begin to form randomly. There will be three arrays, each aligned by an index. The first array will contain a queryType which will be either Friend or Total. The next two arrays, students1 and students2, will each contain a student ID. If the query type is Friend, the two students become friends. If the query type is Total, report the sum of the sizes of each group of friends for the two students.