Guida Pratica A Sql 2026
close menu
Bookswagon
search
My Account
Home > Stationery and miscellaneous items > Guida Pratica A Sql 2026: Dalle prime query a report affidabili, flussi di lavoro dei dati puliti e oltre
Guida Pratica A Sql 2026: Dalle prime query a report affidabili, flussi di lavoro dei dati puliti e oltre

Guida Pratica A Sql 2026: Dalle prime query a report affidabili, flussi di lavoro dei dati puliti e oltre


     0     
5
4
3
2
1



International Edition


X
About the Book

SQL sembra semplice finché la query non restituisce righe errate, risultati duplicati, totali incompleti o un messaggio di errore incomprensibile. Se vuoi smettere di procedere per tentativi e iniziare a scrivere query che rispondano effettivamente a domande reali, questo libro ti indica la strada.

SQL Practical Guide 2026 ti insegna a ragionare sui database, a creare query accurate, a risolvere gli errori e a trasformare tabelle grezze in risultati utili. Imparerai a partire dai comandi di base fino ad arrivare a report affidabili, analisi multi-tabella, modifiche sicure dei dati e flussi di lavoro orientati alle prestazioni.

  • Inizia con una mentalità SQL: comprendi tabelle, righe, colonne, chiavi, relazioni e come i database organizzano le informazioni prima di scrivere query complesse.
  • Imposta tutto correttamente: scegli un ambiente di pratica, carica dati di esempio, esegui le query in modo sicuro e acquisisci abitudini che ti evitino la frustrazione tipica dei principianti.
  • Scrivi query SELECT più pulite: recupera le colonne, rinomina l'output, filtra le righe, ordina i risultati, limita i dati e struttura query di facile lettura.
  • Gestisci problemi reali con i dati: lavora con testo, numeri, date, campi calcolati, ricerche di pattern, valori NULL ed errori logici che causano risultati errati.
  • Unisci le tabelle con sicurezza: utilizza join interni, join a sinistra, join tra più tabelle e join automatici, evitando duplicati, righe mancanti e corrispondenze errate.
  • Crea report accurati: usa COUNT, SUM, AVG, MIN, MAX, GROUP BY e HAVING per creare riepiloghi affidabili.
  • Scomponi la logica complessa: usa subquery, tabelle derivate, CTE e la scomposizione delle query passo passo per risolvere problemi più grandi senza perderti
  • Utilizza le funzioni finestra: applica classifiche, totali progressivi, medie mobili, partizioni e confronti tra righe per un'analisi pratica.
  • Modifica i dati in modo sicuro: impara a utilizzare le operazioni di INSERT, UPDATE, DELETE, le transazioni, i rollback, i vincoli e le buone pratiche di test prima di modificare i record.
  • Risolvi i problemi come un utente esperto: diagnostica query lente, risultati errati, righe duplicate, dati mancanti ed errori comuni in PostgreSQL, MySQL, SQL Server e SQLite.
Questo libro è pensato per principianti, studenti, analisti, sviluppatori, utenti d'ufficio, persone che cambiano carriera e chiunque abbia bisogno di SQL per lavoro, reportistica, analisi dei dati o per acquisire competenze sui database.

Inizia a sviluppare competenze SQL che ti permettano di ottenere risposte accurate, report più chiari e una maggiore sicurezza nell'utilizzo di dati reali.


Best Sellers


Product Details
  • ISBN-13: 9798184811673
  • Publisher: Independently Published
  • Publisher Imprint: Independently Published
  • Height: 279 mm
  • No of Pages: 198
  • Returnable: N
  • Sub Title: Dalle prime query a report affidabili, flussi di lavoro dei dati puliti e oltre
  • Width: 216 mm
  • ISBN-10: 8184811675
  • Publisher Date: 29 Jun 2026
  • Binding: Paperback
  • Language: Italian
  • Returnable: N
  • Spine Width: 11 mm
  • Weight: 521 gr


Similar Products

Add Photo
Add Photo

Customer Reviews

REVIEWS      0     
Click Here To Be The First to Review this Product
Guida Pratica A Sql 2026: Dalle prime query a report affidabili, flussi di lavoro dei dati puliti e oltre
Independently Published -
Guida Pratica A Sql 2026: Dalle prime query a report affidabili, flussi di lavoro dei dati puliti e oltre
Writing guidlines
We want to publish your review, so please:
  • keep your review on the product. Review's that defame author's character will be rejected.
  • Keep your review focused on the product.
  • Avoid writing about customer service. contact us instead if you have issue requiring immediate attention.
  • Refrain from mentioning competitors or the specific price you paid for the product.
  • Do not include any personally identifiable information, such as full names.

Guida Pratica A Sql 2026: Dalle prime query a report affidabili, flussi di lavoro dei dati puliti e oltre

Required fields are marked with *

Review Title*
Review
    Add Photo Add up to 6 photos
    Would you recommend this product to a friend?
    Tag this Book Read more
    Does your review contain spoilers?
    What type of reader best describes you?
    I agree to the terms & conditions
    You may receive emails regarding this submission. Any emails will include the ability to opt-out of future communications.

    CUSTOMER RATINGS AND REVIEWS AND QUESTIONS AND ANSWERS TERMS OF USE

    These Terms of Use govern your conduct associated with the Customer Ratings and Reviews and/or Questions and Answers service offered by Bookswagon (the "CRR Service").


    By submitting any content to Bookswagon, you guarantee that:
    • You are the sole author and owner of the intellectual property rights in the content;
    • All "moral rights" that you may have in such content have been voluntarily waived by you;
    • All content that you post is accurate;
    • You are at least 13 years old;
    • Use of the content you supply does not violate these Terms of Use and will not cause injury to any person or entity.
    You further agree that you may not submit any content:
    • That is known by you to be false, inaccurate or misleading;
    • That infringes any third party's copyright, patent, trademark, trade secret or other proprietary rights or rights of publicity or privacy;
    • That violates any law, statute, ordinance or regulation (including, but not limited to, those governing, consumer protection, unfair competition, anti-discrimination or false advertising);
    • That is, or may reasonably be considered to be, defamatory, libelous, hateful, racially or religiously biased or offensive, unlawfully threatening or unlawfully harassing to any individual, partnership or corporation;
    • For which you were compensated or granted any consideration by any unapproved third party;
    • That includes any information that references other websites, addresses, email addresses, contact information or phone numbers;
    • That contains any computer viruses, worms or other potentially damaging computer programs or files.
    You agree to indemnify and hold Bookswagon (and its officers, directors, agents, subsidiaries, joint ventures, employees and third-party service providers, including but not limited to Bazaarvoice, Inc.), harmless from all claims, demands, and damages (actual and consequential) of every kind and nature, known and unknown including reasonable attorneys' fees, arising out of a breach of your representations and warranties set forth above, or your violation of any law or the rights of a third party.


    For any content that you submit, you grant Bookswagon a perpetual, irrevocable, royalty-free, transferable right and license to use, copy, modify, delete in its entirety, adapt, publish, translate, create derivative works from and/or sell, transfer, and/or distribute such content and/or incorporate such content into any form, medium or technology throughout the world without compensation to you. Additionally,  Bookswagon may transfer or share any personal information that you submit with its third-party service providers, including but not limited to Bazaarvoice, Inc. in accordance with  Privacy Policy


    All content that you submit may be used at Bookswagon's sole discretion. Bookswagon reserves the right to change, condense, withhold publication, remove or delete any content on Bookswagon's website that Bookswagon deems, in its sole discretion, to violate the content guidelines or any other provision of these Terms of Use.  Bookswagon does not guarantee that you will have any recourse through Bookswagon to edit or delete any content you have submitted. Ratings and written comments are generally posted within two to four business days. However, Bookswagon reserves the right to remove or to refuse to post any submission to the extent authorized by law. You acknowledge that you, not Bookswagon, are responsible for the contents of your submission. None of the content that you submit shall be subject to any obligation of confidence on the part of Bookswagon, its agents, subsidiaries, affiliates, partners or third party service providers (including but not limited to Bazaarvoice, Inc.)and their respective directors, officers and employees.

    Accept

    Fresh on the Shelf


    Inspired by your browsing history


    Your review has been submitted!

    You've already reviewed this product!
    Your IP: 216.73.217.2 IN