What is grouping?
Grouping - is arranging observations into sub-groups based on unique values in some column. For example, we can group our audi_cars table by transmission column (contains 3 unique values). There will be observations within each subgroup. So, what's the point of grouping?
In SQL grouping is often used in pair with some aggregate function within SELECT. For example, we can calculate the average price for each transmission type.
123SELECT AVG(price), transmission FROM audi_cars GROUP BY transmission
This will return all the transmissions types with average prices within each group.
Swipe to start coding
From the audi_cars table calculate the average price of each model. Round price to two decimals.
Solution
Passez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessousMerci pour vos commentaires !
single
Demandez à l'IA
Demandez à l'IA
Posez n'importe quelle question ou essayez l'une des questions suggérées pour commencer notre discussion
Awesome!
Completion rate improved to 2.63Awesome!
Completion rate improved to 2.63What is grouping?
Grouping - is arranging observations into sub-groups based on unique values in some column. For example, we can group our audi_cars table by transmission column (contains 3 unique values). There will be observations within each subgroup. So, what's the point of grouping?
In SQL grouping is often used in pair with some aggregate function within SELECT. For example, we can calculate the average price for each transmission type.
123SELECT AVG(price), transmission FROM audi_cars GROUP BY transmission
This will return all the transmissions types with average prices within each group.
Swipe to start coding
From the audi_cars table calculate the average price of each model. Round price to two decimals.
Solution
Passez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessousMerci pour vos commentaires !
single
Awesome!
Completion rate improved to 2.63What is grouping?
Glissez pour afficher le menu
Grouping - is arranging observations into sub-groups based on unique values in some column. For example, we can group our audi_cars table by transmission column (contains 3 unique values). There will be observations within each subgroup. So, what's the point of grouping?
In SQL grouping is often used in pair with some aggregate function within SELECT. For example, we can calculate the average price for each transmission type.
123SELECT AVG(price), transmission FROM audi_cars GROUP BY transmission
This will return all the transmissions types with average prices within each group.
Swipe to start coding
From the audi_cars table calculate the average price of each model. Round price to two decimals.
Solution
Passez à un bureau pour une pratique réelleContinuez d'où vous êtes en utilisant l'une des options ci-dessousMerci pour vos commentaires !
