How do I truncate a partition?

Use the ALTER TABLE… TRUNCATE PARTITION command to remove the data from the specified partition, leaving the partition structure intact. When you truncate a partition, any subpartitions of that partition are also truncated.

What does truncate do in Oracle?

The TRUNCATE TABLE statement is used to remove all records from a table in Oracle. It performs the same function as a DELETE statement without a WHERE clause. Warning: If you truncate a table, the TRUNCATE TABLE statement can not be rolled back.

How do I truncate a partition in hive?

To truncate the entire Hive table, choose the option to truncate the target table. To truncate only the partitions in the Hive table for which the transformation received input data, you must choose to truncate the target table and to truncate the partition in the Hive target table.

Is truncate table logged or not?

If you go by literal definition of Minimal yes truncate table logs only deallocation of data pages or extents but does not logs information about rows deleted so it does logs information minimally. But if we go by Minimal Logging definition as per Microsoft it does not says anything about logging behavior of truncate statement.

Is truncate faster or delete?

Truncate is more faster than delete. Since it has a power of releasing the structure of table storage size and deallocates whereas delete is used to mere deletion of records in tables with the usage of where clause as a optional one. Truncate is also fall under DDL part.

What does Oracle partition by do?

PARTITION BY is a keyword that can be used in aggregate queries in Oracle, such as SUM and COUNT. This keyword, along with the OVER keyword, allows you to specify the range of records that are used for each group within the function. May 18 2019

Can we truncate a temporal table?

No, Truncate is not supported on TEMPORAL tables. You have to set the System Versioning to OFF and drop the versioning Columns and then Drop the History table. Then Finally You can drop the TEMPORAL table.