February 2022
Intermediate to advanced
360 pages
11h 47m
Polish
Content preview from Spark
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Rozdział 5. Spark SQL i DataFrame — współpraca z zewnętrznymi źródłami danych
W poprzednim rozdziale wyjaśniliśmy, jak przebiega współpraca z wbudowanymi źródłami danych w Sparku. Ponadto nieco dokładniej omówiliśmy współdziałanie API DataFrame i silnika Spark SQL. Natomiast w niniejszym rozdziale skoncentrujemy się na tym, jak Spark SQL współpracuje z komponentami zewnętrznymi. Przede wszystkim dowiesz się, w jaki sposób silnik ten umożliwia:
- używanie zdefiniowanych przez użytkownika funkcji przeznaczonych dla Apache Hive i Apache Spark;
- nawiązywanie połączenia z zewnętrznymi źródłami danych, takimi jak JDBC i bazy danych SQL, PostgreSQL, MySQL, Tableau, Azure Cosmos DB i MS SQL Server;
- pracę z prostymi i skomplikowanymi typami, funkcjami ...
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