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Certificado
SQL de Cero a Héroe
4.7+
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Beginner
Hoy aprenderemos a gestionar grandes conjuntos de datos y a analizar datos reales.
SQL
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Try Codefinity TeamsWhat you will learn
- You will learn how to write basic SQL queries to retrieve data from databases
- You will understand how to filter, sort, aggregate and join data using SQL
- You will learn how to modify and manage database structures with Data Definition Language (DDL)
- You will develop skills to manage and manipulate data using Data Manipulation Language (DML)
- You will gain a deep understanding of relational database concepts and the principles of normalization
- You will learn how to optimize your queries using indexing and understand the importance of database performance
- You will explore advanced SQL techniques such as triggers and window functions to enhance your data processing capabilities
- You will understand and apply the principles of ACID in SQL transactions
- You will learn how to create and manage database views and use them effectively in data retrieval
- 101 chapters
- 10 hours
- 112 tasks
Trusted by employees of leading companies
Learning track content
Module 1 / Introducción a SQL
En esta sección, aprenderemos cómo usar la declaración SQL SELECT para obtener una columna de tabla única, múltiples columnas de tabla y todas las columnas de tabla. También descubriremos cómo devolver valores únicos.
- Recuperación de Columnas IndividualesPreview
- Recuperando Múltiples ColumnasPreview
- Recuperando Todas las ColumnasPreview
- Recuperando Filas DistintasPreview
- Limitando ResultadosPreview
- Desafío: Encuentra la Población de los PaísesPreview
- Desafío: Encuentra Todos los PaísesPreview
- Desafío: Encuentra Todos los Países con Sus IDsPreview
- Desafío: Encuentra las Capitales de los PaísesPreview
- Desafío: Encuentra las Regiones en las que se Ubican Todos los PaísesPreview
En esta sección, aprenderemos cómo ordenar los datos recuperados utilizando la cláusula ORDER BY. Esta cláusula, que debe ser la última en la declaración SELECT, se puede usar para ordenar datos en una o más columnas según sea necesario.\n
- Ordenar DatosPreview
- Desafío: Ordenar PoblaciónPreview
- Ordenar por Múltiples ColumnasPreview
- Desafío: Consulta de Doble OrdenaciónPreview
- Especificar la dirección de ordenaciónPreview
- Desafío: Ordena los Países por Región y CapitalPreview
- Desafío: Ordenar Capitales en Orden DescendentePreview
- Desafío: Ordenar Países en Orden AscendentePreview
- Desafío: Encuentra Países, Sus IDs y Sus PoblacionesPreview
- Desafío: Encuentra Países, IDs, Poblaciones, Regiones, y OrdénalosPreview
- Desafío: Encuentra Todos los Continentes y Ordénalos en Orden AscendentePreview
En esta sección, aprenderemos cómo filtrar los datos devueltos utilizando la cláusula WHERE de la declaración SELECT. Aprenderemos cómo probar la igualdad, desigualdad, rangos de valores mayores y menores, y valores NULL.
En esta sección, aprenderemos cómo combinar cláusulas WHERE con los operadores AND y OR. También descubriremos cómo funciona el operador NOT.\n\n\n
En esta sección, aprenderemos qué son las funciones de agregación de SQL y cómo usarlas para resumir los datos de las tablas.
Module 2 / SQL Intermedio
En esta sección, aprenderá a agrupar y trabajar con dichos datos. Para ello, nos familiarizaremos con un operador como GROUP BY. También aprenderás a filtrar datos agrupados utilizando el operador HAVING.
- GROUP BYPreview
- Orden de las SentenciasPreview
- Desafío del Tiempo Total de Viaje para Cada Línea de MetroPreview
- Desafío de la Calificación Promedio de los EstudiantesPreview
- Búsqueda del Desafío para los Mejores Estudiantes de MatemáticasPreview
- TENIENDOPreview
- Varias funciones de agregación en la consultaPreview
- Filtrado Más ComplejoPreview
En esta sección, aprenderás qué son las subconsultas anidadas, cómo crearlas y cómo trabajar con ellas.
En esta sección, aprenderá cómo puede combinar varias tablas, trabajando así con una tabla común, lo que simplificará la creación de consultas.
Aprende los fundamentos del Lenguaje de Definición de Datos (DDL) y del Lenguaje de Manipulación de Datos (DML) en SQL, incluyendo cómo crear, modificar y eliminar objetos de la base de datos, así como también cómo insertar, actualizar y eliminar datos dentro de las tablas.
Module 3 / Relational Database and Normalization
This section dives into the world of relational and non-relational databases, teaching you how to visually represent database structures.
We'll dive deep into relational databases, giving you a thorough understanding of essential concepts. This includes topics like foreign keys, various ON DELETE options, and the different types of relationships.
Ready to build a database? This section will hone your skills, emphasizing the importance of a well-structured database for peak performance. Here, you'll grasp the fundamental principles of crafting user-friendly databases.
Module 4 / Advanced Techniques in SQL
Now we explore the basic principles of ACID (Atomicity, Consistency, Isolation, Durability) in database management. Learn how these principles ensure reliable transactions by guaranteeing complete operations, keeping data consistent, isolating concurrent transactions, and ensuring permanent data storage.
Explore how to enhance the efficiency of your SQL queries through index optimization. Delve into the significance of indexes in database performance, learning how to design, implement, and utilize them effectively. Discover strategies for choosing the appropriate indexes, understanding their impact on query execution plans, and optimizing query performance through index selection and utilization.
This section explores pivotal topics such as Triggers, Window Functions, and DCL (Data Control Language), offering comprehensive insights into their implementation and optimization strategies. Furthermore, it navigates the landscape of NoSQL DBMS, providing a thorough understanding of its architecture, advantages, and practical applications.
Requirements
- A computer with a browser - all browsers are supported.
- Your enthusiasm to enhance your tech skills.
- Everything else needed to start learning and practicing is already included in this course.
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Ruslan Kravchuk
The main thing is to learn and not give up
The material is good, there is a lot to learn, all in order to become better and the main thing is to learn what you want....
Matteo Comune
Thanks to them I'm learning a lot…
Thanks to them I'm learning a lot faster because they help you to understand everything from scratch. It's the best website that helps people with no background in IT...
Yuliana Cadavid
great course for beginners
great course for beginners, they test your knowledge in every lesson...
Elpunzon
I am enjoying my Codefinity experience…
I am enjoying my Codefinity experience learning Python. The self-paced way of learning is great because I can fit it into my schedule...
Alexandru Alexandru
Is nice to learn from codefinity
Is nice to learn from codefinity. Its easy and have good examples on what I learned here...
jacob Templet
Easy to follow along with and provides…
Easy to follow along with and provides challenge in my every day life. The challenge keeps me wanting to learn day after day...
Elan
Codefinity is a comprehensive learning…
Codefinity is a comprehensive learning tool to help you develop your skills as a software engineer or data scientist. The exercises are fun and a good way to sharpen your skills...
Thibault
First time learning how to code
First time learning how to code and successfully doing so with codefinity - thank you...
Adrien Morel
Well designed for total beginners
Well designed for total beginners, incremental progress and makes me feel confident....
_Gracy
it's simply perfectly well explained
it's simply perfectly well explained! so far I have not experienced any difficulty because everything is so well managed...
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Boost your Tech Skills!
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What you'll get with our subscription:
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