Il mondo si basa sui dati, ma quale lingua parla? Parla SQL. Per chiunque voglia entrare nel mondo della tecnologia, dell'analisi dei dati o della business intelligence, la padronanza dello Structured Query Language (SQL) non � pi� un'opzione, � una necessit�. Questo libro � la tua chiave per sbloccare quella padronanza.

Parlare SQL demistifica il linguaggio dei dati, trasformandolo da un'intimidatoria barriera tecnica in uno strumento accessibile e potente. Scritta con un approccio metodico e pratico, questa guida utilizza il motore di database gratuito e leggero SQLite e il noto database di esempio Chinook, permettendoti di imparare facendo. Non ti limiterai a leggere i concetti; scriverai le tue prime query in pochi minuti, costruendo competenze pratiche da zero.

All'interno, imparerai a:

Padroneggiare i fondamenti: Inizia con l'istruzione SELECT di base e costruisci progressivamente le tue abilit� con filtri, ordinamenti e manipolazione dei dati.
Connettere le informazioni: Afferra l'arte del JOIN per unire dati da pi� tabelle e rispondere a complesse domande di business.
Modellare e trasformare i dati: Usa funzioni e logica condizionale per pulire, formattare e calcolare nuovi valori al volo.
Riassumere e analizzare: Impara a usare aggregazioni, GROUP BY e funzioni finestra avanzate per trasformare i dati grezzi in informazioni significative.
Costruire da zero: Vai oltre le interrogazioni e impara a progettare e CREATE le tue tabelle di database con vincoli robusti che ne garantiscano l'integrit�.
Scrivere in modo professionale: Acquisisci una solida base per scrivere codice pulito, leggibile ed efficiente, un'abilit� che distingue i dilettanti dai professionisti.

Scritto con la chiarezza al centro, questo libro segue una progressione logica da concetti semplici a tecniche avanzate. � il punto di partenza perfetto per aspiranti analisti di dati, sviluppatori software, professionisti della BI o chiunque abbia bisogno di interagire con i dati. Non imparerai solo i comandi; capirai i principi che li governano.

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Store Description

We first started out as ?The Paperback Exchange,? a chain of physical bookstores where we would part exchange your beloved books for new stories to transport you to faraway places. However, as shopping started to evolve to online shops and marketplaces, we bid our stores goodbye to become ?PBShop.? This transition has only allowed us to blossom as we now ship thousands of titles to book lovers across the globe. We pride ourselves in being a community of local book lovers which allows our passion and devotion to shine in everything we do. In 2020 we not only celebrated our 20th birthday but our 1st birthday as being completely employee owned after becoming an E.O.T in September 2019. We are proud to be different and embrace standing apart on a book mountain by working from a virtual inventory which allows us to provide thousands of books that may be difficult to get for your bookshelf or your studies. Working with a number of different suppliers allows us to explore other avenues such as puzzles, sheet music and even stationery so we really do have something for everyone. Life is about being versatile in all realms of existence. If this is your first visit or you are a returning customer, we would like to welcome you to the PBShop family, for there is no friend as loyal as a book. We are a company who put our customers at the centre of everything we do as we understand the importance of reading because once you learn to read, you will forever be free. There are a whole lot of things in this world of ours that we are yet to explore, which is why we will forever inspire curious minds.

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