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intro-to-sql's Introduction

Intro to SQL

Preparación para la tecnología de bases de datos y el lenguaje de programación SQL (Structured Query Language). Este curso está diseñado para ayudarte a comprender los conceptos básicos de SQL y BigQuery. Básicamente un curso de SQL para principiantes.

Buils on

Python

Learnign Platform

Kaggle

Course Link

https://www.kaggle.com/learn/intro-to-sql

References

Google Cloud BigQuery Legacy


Contenido

  1. Getting Started With SQL and BigQuery

    • Introducción al curso.
    • Comandos bigquery y SQL.
    • Métodos Google Cloud.
    • Visualización de datos básicos.
  2. Select, From & Where

    • Formas de buscar la información necesaria de grandes volúmenes de datos.
    • Filtar información.
    • DISTINCT.
    • query().
    • Limitar query size.
  3. Group By, Having & Count

    • Agrupar datos repetidos por columnas.
    • Restringir resultados a ciertas condiciones.
    • Contar resultados según grupos.
  4. Order By

    • Ordenar resultados ascendente y descendente.
    • Operaciones de fechas con EXTRACT y ORDER BY.
    • Ejercicio con AVG().
    • Uso de múltiples en SELECT, GROUP BY y WHERE.
  5. As & With

    • Crear columnas con AS.
    • Crear tablas temporales con WITH ... AS.
    • Uso de DATE(), SUM() y HOUR
    • Ejercicios complejos buscando información de tablas temporales o CTE.
  6. Joining Data

    • Combinar fuentes de datos. Con JOIN y ON.
    • Uso de WHERE... LIKE .... Y % para representar cualquier número de caracteres.
    • Ejercicios con INNER JOIN más WHERE... LIKE ....
    • A real life backend example.

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