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- 1. Get the actors
- 2. Get the languages list
- 3. Get list of actors names
- 4. Get the ordered list of languages
- 5. Get the sorted list of films with limit
- 6. Find stuff members by condition
- 7. Get the sorted list of films with condition
- 8. Find film names by description
- 9. Find the actors by name
- 10. Find the average length of a movie
- 11. Find foreign employees
- 12. Get an ordered list of movies
- 13. Find clients starting with the letter "A"
- 14. Find clients starting with the letter "A" (2)
- 15. Find the minimal and maximal film rental cost
- 16. Get the first 10 movies in alphabetical order
- 17. Find long movies
- 18. Calculate the area of a circle
- 19. Calculate circle perimeter
- 20. Find active customers
- 21. Find movies with above-average rental rates
- 22. Find movies with the highest replacement cost
- 23. Get list of clients
- 24. Analyze customer payments
- 25. Get a list of movie ratings
- 26. Get list of tables
- 27. Get table columns data
- 28. Get list of indexes
- 29. Get the restricted films list
- 30. Get list of restricted films
- 31. Find adult only films about Database Administrator
- 32. Create new address record
- 33. Update the postal code
- 34. Remove customer records
- 35. Find addresses without postal code
- 36. Find an addresses with even postal codes
- 37. Build shared surnames list
- 38. Get airports data
- 39. Find long-range aircraft
- 40. Find the palindrome names
- 41. What is SQL?
- 42. What is DBMS?
- 43. What is RDBMS?
- 44. What is a Database?
- 45. What is ACID?
- 46. What are DQL commands?
- 47. What is index in SQL?
- 48. SQL tables joins types
- 49. Choose join type
- 50. Perform price update
- 51. Update customer's address
- 52. Adjust the rental cost
- 53. Update replacement cost
- 54. Order of execution of logical operators
- 55. Difference between UNION and UNION ALL
- 56. Display a list of departments
- 57. Find employees by department
- 58. Find employee salary
- 59. Find employees with high salaries
- 60. Find employees with a salary above average
- 61. Find customers with even numbers
- 62. Find customers by phone prefix
- 63. Get unique customers list
- 64. How avoid accidental deletion?
- 65. What relation types exists in SQL?
- 66. Find non-Dollar/Euro countries
- 67. Jobs without specific requirements
- 68. Update project information
- 69. What is a subquery?
- 70. Root categories list
- 71. Product List
- 72. Filtered list of products
- 73. Ten heaviest products
- 74. Sort the penguins
- 75. Find light weight penguins
- 76. Penguins list
- 77. Distribution penguins by islands
- 78. Find small penguins
- 79. Find small penguins species
- 80. Search by pattern
- 81. Flipper length to body mass rate
- 82. Penguins whose sex is unknown
- 83. Heavy chinstrap penguins
- 84. Count the penguins
- 85. Penguins and Islands
- 86. Find small penguins species
- 87. Penguins distribution
- 88. Common penguin species
- 89. Managed by Robert Nelson
- 90. Delete records
- 91. Delete employee records
- 92. What is denormalization in RDB?
- 93. Penguins stats
- 1. Find customers full names
- 2. Find addresses using sub-query
- 3. Find addresses using JOIN
- 4. Find duplicate actor names
- 5. Find the most popular surname among actors
- 6. Find all the actors in the film
- 7. Find all films of an actor
- 8. Find the distribution of films by category
- 9. Find the average length of a movie by category
- 10. Find the number of films in which the actor took part
- 11. Find actors more popular than HENRY BERRY
- 12. Analyze monthly payment
- 13. Find the best month
- 14. Find the most popular film
- 15. Analyze rental data for film
- 16. Find the department
- 17. Find employees works on the project
- 18. Find all customers with unshipped orders
- 19. Get a list of movies sorted by multiple fields
- 20. Get the longest movie
- 21. Get films list third page
- 22. Find the films never been rented
- 23. Find customers who did not return rented discs
- 24. Find average daily film rentals
- 25. Calculate daily income for the month
- 26. Generate dates table
- 27. Calculate the number of days off in a month
- 28. The average cost of renting a movie by category
- 29. Average film rental duration for each customer
- 30. Find long comedies
- 31. Find the distribution of customer activity
- 32. Find company stores details
- 33. Find clients who rented the film
- 34. Find minimum, maximum and average film duration
- 35. Find long movie categories
- 36. Find the number of employees
- 37. Find movie distribution by store
- 38. Find highly paid employees
- 39. Find employees by hire date
- 40. Get list of highly paid employees
- 41. Find valuable employees
- 42. Find the salary ratio
- 43. Find the average client activity time
- 44. Find the average revenue
- 45. Find the store average revenue
- 46. Create a salary rating
- 47. Quarterly earnings analysis
- 48. Find the countries with the most customers
- 49. Find customer details
- 50. Find the number of returns
- 51. Find the top spending customers
- 52. Find films with no available inventory
- 53. Find languages not represented in films
- 54. Find movies that have never been rented
- 55. Find clients with a high number of rentals
- 56. Find movies with the highest replacement cost
- 57. Count the rental delays
- 58. Calculate the percentage of delays
- 59. Extract address and domain from email
- 60. Get a list of actors - namesakes
- 61. Get a list of movies and their categories
- 62. Find film average rental time
- 63. Movie rental prices by category
- 64. Get rolling payment amounts
- 65. Find the number of films in each category
- 66. Find the most diverse clients
- 67. Find film distribution
- 68. Payments analyze
- 69. Distribution of clients by weekday
- 70. Find the distribution of clients by time of day
- 71. Improve distribution of clients by weekday
- 72. Movies without actors records
- 73. Movies without cast records
- 74. Find all the actors in the film
- 75. Find all actors never starred in adult only films
- 76. Analyze weekly rentals
- 77. Average rentals count
- 78. Find the distribution of clients by country
- 79. Find never been delayed films
- 80. Find most delayed films
- 81. Create department table
- 82. Find films about Dogs or Cats
- 83. Clients whose first name is the last name of another client
- 84. Update Canadian postal codes
- 85. Enter Woodridge postal code
- 86. Enter new staff record
- 87. Create customer addresses view
- 88. Distribution of films by categories in JSON format
- 89. Generate a list of movies in JSON format
- 90. Category popularity analysis
- 91. Build a overal email list
- 92. Select clients without the letter "A"
- 93. Alter the staff table
- 94. Find films in several categories
- 95. Get a list of airports
- 96. Find Boeing aircraft
- 97. Get flights departed from Domodedovo
- 98. Get a list of aircraft from Domodedovo
- 99. Aircraft usage analysis
- 100. Find last names with double letters
- 101. Customers with matching name initials
- 102. Output a list of customer names
- 103. Find the aircraft without Business class
- 104. Get counts of seats by class
- 105. Calculate the number of seats on flight
- 106. Get the list of destination airports
- 107. Get a list of airports with direct connections
- 108. Get a list of no-show passengers
- 109. Get a list of passengers
- 110. Find the flight delay
- 111. Get flights statistics
- 112. Rate airports
- 113. Find a list of flight options
- 114. Find the fastest flight
- 115. Calculate the daily number of flights
- 116. Get list of tables
- 117. Get information about the columns
- 118. Airports with one-way departures
- 119. Find airports relations
- 120. Find small airports
- 121. Get the passenger list
- 122. Get aircraft seat map
- 123. Get a list of planes in the air
- 124. What are DDL commands?
- 125. What are DML commands?
- 126. How is data structured in a relational database?
- 127. Choose tables join type
- 128. Calculate the tax
- 129. Get formatted list of films
- 130. What is a primary key?
- 131. Find the tomorrow date
- 132. Find the first and last dates of month
- 133. Find the first and last dates of week
- 134. Display a table of airports
- 135. Count departing passengers
- 136. Number of passengers with total
- 137. Display a table of departures
- 138. Get a list of airports with more than one direct flight
- 139. Get list of tables (PostgreSQL)
- 140. Show a sub-departments list (JOIN)
- 141. Get a list of sub-departments
- 142. Get list of tables (SQL Server)
- 143. Find duplicate phone numbers
- 144. What is a covering index?
- 145. What is a view in SQL?
- 146. Find a February 2006 hit
- 147. Get product category color counts
- 148. Find films to share
- 149. How to find common rows in SQL?
- 150. Orders shipped in the following month
- 151. Top states by population
- 152. Reduced salaries
- 153. List of categories
- 154. List of subcategories
- 155. What is a SQL transaction?
- 156. What is normalization in SQL?
- 157. What is a correlated subquery?
- 158. Create a phonebook
- 159. Staff availability report
- 160. What is "PIVOT" in SQL?
- 161. Film distribution by category and store
- 162. Determine the type of relationship
- 163. Find highly paid employees
- 164. Find the median salary
- 165. Find the hypotenuse of a triangle
- 166. Find the median booking amount
- 167. Find the median film's length
- 168. Prepare mailing list
- 169. Daily income by source
- 170. Penguins with absent data
- 171. Index usage
- 172. Using a covering index
- 173. Island with the minimum penguins mass
- 174. The most populated island
- 175. Classic movies
- 176. Penguins stats table
- 177. Tables joining algorithms in SQL
- 178. Delete films records
- 179. Analyze bill length
- 180. Analyze flipper length
- 1. Find most active customers
- 2. Find sad actors
- 3. Find the most diverse actors
- 4. Find all films where HENRY BERRY did not participate
- 5. Calculate factorial
- 6. Find average disk idle time
- 7. Find the distribution by categories
- 8. Analyze monthly payments (2)
- 9. Find movie popularity rating
- 10. Find EMILY DEE fans
- 11. Clients who are not familiar with EMILY DEE films
- 12. Find the count of rented disks
- 13. Disc rental and return statistics
- 14. Find the least popular movies
- 15. Get movie cast lists
- 16. Find movies with rental time below average
- 17. Find acting duets
- 18. Find films that were out of stock
- 19. Improve payments analyze
- 20. Find repeat rentals
- 21. Find the Horror films fans
- 22. Find clients who have met each other
- 23. Find movies available in one store only
- 24. Find movies with no available copies
- 25. Staff performance analysis
- 26. Generate monthly bill
- 27. Find customers who sow same films
- 28. Get rows and seats count
- 29. Get a list of airports without direct connections
- 30. Find rented films
- 31. Obtain a list of passengers
- 32. Find average flight occupancy
- 33. Find flight occupancy by fare
- 34. FInd the plane coordinates
- 35. FInd the planes coordinates
- 36. What is a subset of the SQL language?
- 37. What is a constraint in SQL?
- 38. SQL constraints types
- 39. SQL set operators
- 40. Move film between categories
- 41. Find a 2005 hits
- 42. Analysis of the cost of film rental by category
- 43. What is a materialized view?
- 44. Distribution of flights by days of the week
- 45. Subcategories count
- 46. Actual statistics
- 47. Actual statistics 2
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Based on the penguins table, create a penguins_islands_view view with the fields island - the name of the island and penguins_count - the number of penguins living on it.
Use SQLite syntax to write your answer. Descriptions of tables are provided in the right pane.
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Querynomicon (SQLite)
A compact database for learning the basics of SQL.The Querynomicon database contains tables:
little_penguins - table of little penguins.
- speciesPenguin species.
- islandIsland of residence.
- bill_length_mmBill length, mm.
- bill_depth_mmBill depth, mm.
- flipper_length_mmFlipper length, mm.
- body_mass_gBody mass, g.
- sexSex.
| species | island | bill_length_mm | bill_depth_mm | flipper_length_mm | body_mass_g | sex |
|---|---|---|---|---|---|---|
| Gentoo | Biscoe | 52.1 | 17 | 230 | 5550 | MALE |
penguins - table of penguins.
- speciesPenguin species.
- islandIsland of residence.
- bill_length_mmBill length, mm.
- bill_depth_mmBill depth, mm.
- flipper_length_mmFlipper length, mm.
- body_mass_gBody mass, g.
- sexSex.
| species | island | bill_length_mm | bill_depth_mm | flipper_length_mm | body_mass_g | sex |
|---|---|---|---|---|---|---|
| Gentoo | Biscoe | 52.1 | 17 | 230 | 5550 | MALE |
staff - table of employees.
- identEmployee number.
- personalEmployee first name.
- familyEmployee last name.
- deptDepartment.
- ageAge.
| ident | personal | family | dept | age |
|---|---|---|---|---|
| 7 | Abram | Chokshi | gen | 23 |