The external table data is stored externally, while Hive metastore only contains the metadata schema. 下面JDBC程序删除employee表。 … In this tutorial, you will learn how to create, query, and drop an external table in Hive. answered Jun 26, 2019 by Gitika Hello guys! La sintaxis es la siguiente: DROP TABLE [IF EXISTS] table_name; La consulta siguiente cae una tabla denominada empleados: hive> DROP TABLE IF EXISTS employee; El éxito de la ejecución de la consulta, se llega a ver la siguiente respuesta: OK Time taken: 5.3 seconds hive… Drop Table语句. Hive Drop Table - Learn Hive in simple and easy steps from basic to advanced concepts with clear examples including Introduction, Architecture, Installation, Data Types, Create Database, Use Database, Alter Database, Drop Database, Tables, Create Table, Alter Table, Load Data to Table, Insert Table, Drop Table, Views, Indexes, Partitioning, Show, Describe, Built-In Operators, Built-In Functions The general syntax for dropping a view is as follows: It is ok for me to do drop table command under hive shell environment. This behavior can be changed using IF EXISTS optional clause; where it executes the drop partitions only when the partition present in the Hive table. in addition, you can drop multiple partitions from one statement (Dropping multiple partitions in Impala/Hive). Extract from above link: hive> alter table t drop if exists partition (p=1),partition (p=2),partition(p=3); Dropped the partition p=1 Dropped the partition p=2 Dropped the partition … Instrucción Drop Table. %pyspark spark.sql ("DROP TABLE IF EXISTS hive_table") spark.sql("CREATE TABLE IF NOT EXISTS hive_table (number int, Ordinal_Number string, Cardinal_Number string) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' LINES TERMINATED BY '\n' ") spark.sql("load data inpath '/tmp/pysparktestfile.csv' into table pyspark_numbers_from_file") spark.sql("insert into table … If a base table is a view that is dropped, then the dependent view remains in an invalid state, which is either dropped or recreated. Since the table being dropped does not exist in the first place, Hive throws an error, when we issue the command: DROP TABLE IF EXISTS table_name. But when I enter into spark-shell env, I use hiveContext.hql("DROP TABLE IF EXISTS hivetesting"). I tried set hive.exec.drop.ignorenonexistent=true, and it made no difference. Something really weird (at least for me) is happening when I drop a table in Hive. See the full job below. I hope your day is going well. 语法如下： DROP TABLE [IF EXISTS] table_name; 以下查询删除一个名为 employee 的表: hive > DROP TABLE IF EXISTS employee; 对于成功执行查询，能看到以下回应： OK Time taken: 5.3 seconds hive > JDBC 程序. DROP TABLE IF EXISTS throws exception if the table does not exist. ]table_name [PURGE] IF EXISTS clause: The optional IF EXISTS clause makes the statement succeed whether or not the table exists. hive> ALTER TABLE sales drop if exists partition (year = 2020, quarter = 1), partition (year = 2020, quarter = 2); Here is how we dynamically pick partitions to drop. If the table does exist, it is dropped; if it does not exist, the statement has no effect. 1.- A table called "Test" is created by a sqoop import job using "--create-hcatalog-table". Consequently, dropping of an external table does not affect the data. If Trash is configured by setting true to hive.warehouse.data.skipTrash property, dropping a Hive partition moves the … It removes the metadata, but the base table remains intact. The DROP VIEW command removes the view from the database. Drop multiple partitions With the below alter script, we provide the exact partitions we would like to delete. DROP TABLE [IF EXISTS] [db_name.

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