To update and delete data in Hive, you can use the UPDATE and DELETE statements. Here’s how you can use them: Updating Data: To update data in Hive, you can use the UPDATE statement followed by the name of the table and the new values you want to update. Here’s an example: Deleting Data: To …
Section 8:88. Updating and Deleting the data in Hive Bucketed Tables Read More »
In order to insert, we need to take care of the properties first To insert individual records in Hive, you can use the INSERT INTO statement followed by the name of the table and the values you want to insert. Here’s an example:
To create ACID tables in Hive, you need to follow these steps: Enable ACID transactions in Hive by setting the following configuration properties in hive-site.xml file: hive.support.concurrency=true; hive.enforce.bucketing=true; hive.exec.dynamic.partition.mode=nonstrict; hive.txn.manager=org.apache.hadoop.hive.ql.lockmgr.DbTxnManager; 2. Create an ACID table in Hive: Note that when you perform updates or deletes on an ACID table, Hive creates a new version …
Section 8:86. Create Tables For Acid Transactions Read More »
ACID transactions in Hive support the following operations: Insert: Adds new data to the table. Update: Modifies existing data in the table. Delete: Removes data from the table. ACID transactions in Hive provide the following benefits: Strong consistency guarantees: ACID transactions ensure that the data in the database is always consistent. High availability: ACID transactions …
Section 8:85. Overview of Acid Transactions in Hive Read More »
To create a bucketed table with sorting in Hive, you need to specify both the bucketing columns and the sorting columns when creating the table. The syntax for creating a bucketed table with sorting is similar to that of a regular bucketed table, with the addition of the SORTED BY clause:
