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SQL Basics
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Contenido del Curso

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

The cheapest combination

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

Tarea

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

Tarea

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

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

¿Todo estuvo claro?

Sección 5. Capítulo 4
toggle bottom row

The cheapest combination

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

Tarea

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

Tarea

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

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

¿Todo estuvo claro?

Sección 5. Capítulo 4
toggle bottom row

The cheapest combination

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

Tarea

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

Tarea

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

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones

¿Todo estuvo claro?

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

Tarea

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

Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones
Sección 5. Capítulo 4
Cambia al escritorio para practicar en el mundo realContinúe desde donde se encuentra utilizando una de las siguientes opciones
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