Video: Puas yog spark SQL yog database?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Spark SQL tso cai rau koj siv cov ntaub ntawv thav ntawv hauv Python, Java, thiab Scala; nyeem thiab sau cov ntaub ntawv hauv ntau hom qauv; thiab nug cov ntaub ntawv loj nrog SQL ntawv . Nws muab ib DataFrame abstraction hauv Python, Java, thiab Scala kom yooj yim ua haujlwm nrog cov ntaub ntawv txheej txheem. DataFrames zoo ib yam li cov ntxhuav hauv kev sib raug zoo database.
Xav txog qhov no, puas yog qhov chaw khaws ntaub ntawv?
Teeb feem ntau siv nrog cov khw muag khoom faib khoom xws li MapR XD, Hadoop's HDFS, thiab Amazon's S3, nrog nrov NoSQL databases zoo li MapR Database , Apache HBase, Apache Cassandra, thiab MongoDB, thiab nrog cov khw muag khoom xa tawm xws li MapR Event Store thiab Apache Kafka.
dab tsi database siv spark? MongoDB
Yog li ntawd, dab tsi yog spark SQL?
Spark SQL yog a Teeb module rau kev tsim cov ntaub ntawv ua. Nws muab cov programming abstraction hu ua DataFrames thiab tuaj yeem ua raws li kev faib tawm SQL ntawv nug cav. Nws ua rau cov lus nug tsis tau hloov kho Hadoop Hive kom khiav mus txog 100x sai dua ntawm kev xa tawm thiab cov ntaub ntawv uas twb muaj lawm.
Puas yog SQL ANSI ua raws?
Raws li ntawm Teeb 2.0, Teeb yog ANSI SQL :2003 ua raws , uas txhais tau tias Spark SQL txhawb nqa SQL ntawv cov haujlwm uas tsis muaj nyob rau hauv lwm yam lus.
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