Reply. After getting into hive shell, firstly need to create database, then use the database. ericN.
You cannot drop column directly from a table using command “ALTER TABLE table_name drop col_name;” The only way to drop column is using replace command. Labels: None.
Most ALTER TABLE operations do not actually rewrite, move, and so on the actual data files. Component/s: SQL. Thanks. New Contributor. Pls advise.. 2.
Type: Bug Status: Resolved. Priority: Major . 3. 2,957 Views 0 Kudos 2 REPLIES 2.
Re: How to change location of the external table in hive . Details. This operation does not support moving tables across databases.
Rename an existing table or view. hive> ALTER TABLE jsont1 SET LOCATION "hdfs:/jsam/j1"; OK Time taken: 0.245 seconds . ALTER TABLE...ADD COLUMNS broken in Hive 2.1 for DS tables.
Hive Alter 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 How can I ALTER ? Export. hdfs:/ : Did you know then why its not running using hdfs:// (double slash) View solution in original post. Before getting into hive commands along with Hive Single Table Multi-Table Insertion, we should know these points, 1. XML Word Printable JSON. Lets say, I have a table TEST with id, name and case column.
To open the Hive shell we should use the command “hive” in the terminal. For managed tables, renaming a table moves the table location; for unmanaged (external) tables, renaming a table does not move the table … ALTER TABLE test REPLACE COLUMNS (a int, b int);will remove column ‘c’ from test schema. hive> LOCK TABLE test EXCLUSIVE; OK Time taken: 0.154 seconds hive> SHOW LOCKS test; OK default@test EXCLUSIVE Time taken: 0.083 seconds, Fetched: 1 row(s) hive> UNLOCK TABLE test; OK Time taken: 0.127 seconds hive> SHOW LOCKS test; OK Time taken: 0.232 seconds The locking can also be applied to table partitions: hive> LOCK TABLE test_partitioned PARTITION (p='p1') … Hive Alter Table - SQL ALTER TABLE statement is used to rename a table.The SQL ALTER TABLE statement is used to add, modify, or drop/delete columns in a table.It is used to alter a table in Hive. Resolution: Fixed Affects Version/s: 2.2.0. Created on 05-08-2020 07:47 PM - edited 05-08-2020 07:52 PM. Mark as New; Bookmark; Subscribe; Mute; Subscribe to RSS Feed; … Re: ALTER PARTITION - hive mbigelow. (The RENAME TO clause is the one exception; it can cause HDFS … The ALTER TABLE statement changes the structure or properties of an existing Impala table.
Fix Version/s: 2.2.1, 2.3.0. Champion. In Impala, this is primarily a logical operation that updates the table metadata in the metastore database that Impala shares with Hive. Highlighted. Reply. If the destination table name already exists, an exception is thrown. Created 02-09-2017 11:22 AM. Ex: CREATE TABLE Student(fname STRING, lname STRING) PARTITIONED BY (class STRING); ALTER: I wish to add another PARTITION age STRING . 11,767 Views 2 Kudos Highlighted. Log In.