Apprendre comment combiner plusieurs table
Apprendre quand utiliser inner, left, right et full join
Apprendre l'utilisation de la clause Union
Dans ce projet vous allez apprendre les différentes techniques pour combiner des données de plusieurs tables SQL. Vous apprendrez comment tirer parti de la puissance de SQL pour extraire des informations de bases de données relationnelles. Vous allez apprendre à utiliser les clauses join (inner, left, right et full) Vous allez aussi pratiquer l'utilisation de la clause union et l'utilisation des requêtes imbriquées. Vous serez équipé pour savoir quand utiliser SQL pour fournir des informations étayées par des données sur des stratégies d’affaires complexes.
In a video that plays in a split-screen with your work area, your instructor will walk you through these steps:
Interroger une seule table
Combiner deux tables avec une jointure interne
Combiner deux tables avec une jointure interne et un groupement
Combiner deux tables avec un Left Join
Combiner deux tables avec un Right Join
Combiner deux tables avec un Full Join
Combiner deux tables avec Union
Utiliser un Subquery
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In a split-screen video, your instructor guides you step-by-step
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