April 2025
Intermediate to advanced
356 pages
5h 20m
Italian
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Indice
Simboli
- Operatore != (disuguaglianza), Operatori di confronto
- "" (doppi apici)
- Alias di colonna, Alias con sensibilità alle maiuscole e alla punteggiatura
- Identificatori racchiusi, Identificatori, Citazioni, Nozioni di base sulle stringhe
- racchiudere valori di testo nei file, Inserire dati da un file di testo in una tabella
- $$ (segni del dollaro), racchiudere stringhe in PostgreSQL, Alternative agli apici singoli
- % (segno di percentuale)
- operatore modulo, Operatori matematici
- utilizzare con LIKE, LIKE, LIKE
- '' (virgolette singole)
- incorporare le virgolette singole nel valore della stringa, Nozioni di base sulle stringhe
- racchiudere valori di stringa, Citazioni, Nozioni di base sulle stringhe
- sequenze di escape in, Sequenze di escape
- () (parentesi)
- racchiudere le subquery, selezionare le subquery
- che indicano l'ordine delle operazioni, Operatori logici
- * (Asterisk)
- operatore di moltiplicazione, Operatori matematici
- selezionare tutte le colonne, Selezionare tutte le colonne
- + (segno più), operatore di addizione, Operatori e funzioni, Operatori matematici
- , separatore (virgola), La clausola SELECT, Inserire dati da un file di testo in una tabella, Aggregare le righe in un singolo valore o in un elenco, Estensioni potenziali
- -(segno meno) operatore di sottrazione, Operatori matematici
- -- commento per singola riga di codice, L'istruzione SELECT, Commenti
- .(notazione a punti), Colonne di qualificazione
- / (barra in avanti) operatore di divisione, Operatori matematici
- /* */ commento per più righe di codice ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.