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SQL Basics
course content

Course Content

SQL Basics

SQL Basics

1. Selecting
The very first meet with the databaseSELECTing certain columnsLIMITing resultsUnique values from columnUnique values from multiple columnsHow many?How many unique?AliasesTables aliases
2. Filtering
Word filteringNumber filteringCombining conditionsFiltering by numeric intervalMultiple filtering on one columnLIKE filteringNOT like this!
3. Aggregating
MINimal and MAXimal valuesSUMming valuesMean valuesROUNDing
4. Sorting
Sorting by one columnSorting in DESCending orderThe cheapest carSorting by multiple columns
5. Grouping
What is grouping?More aggregate statistics!Grouping by multiple columnsThe cheapest combinationHAVING some conditionsLeast consuming carsFiltering group size
6. Practicing
Challenge: Unique combinationsChallenge: Average Q-series cars priceChallenge: The cheapest new A-series carsChallenge: Relation between engine size and fuel consumptionChallenge: Mileage and manufacture year - is there relation?Challenge: Average price for each model and yearChallenge: The most expensive transmission + engine size combinations

bookThe cheapest combination

Let's try to use acquired knowledge to solve the following problem!

Task

From the audi_cars table extract all the combinations of fueltype + transmission. Round price to 2 decimals and order using it in ascending order.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 5. Chapter 4
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bookThe cheapest combination

Let's try to use acquired knowledge to solve the following problem!

Task

From the audi_cars table extract all the combinations of fueltype + transmission. Round price to 2 decimals and order using it in ascending order.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Section 5. Chapter 4
toggle bottom row

bookThe cheapest combination

Let's try to use acquired knowledge to solve the following problem!

Task

From the audi_cars table extract all the combinations of fueltype + transmission. Round price to 2 decimals and order using it in ascending order.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Everything was clear?

How can we improve it?

Thanks for your feedback!

Let's try to use acquired knowledge to solve the following problem!

Task

From the audi_cars table extract all the combinations of fueltype + transmission. Round price to 2 decimals and order using it in ascending order.

Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
Section 5. Chapter 4
Switch to desktopSwitch to desktop for real-world practiceContinue from where you are using one of the options below
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