Table of Contents
What happens to the show statement in Apache Impala?
When authorization is enabled, the output of the SHOW statement only shows those objects for which you have the privilege to view. If you believe an object exists but you cannot see it in the SHOW output, check with the system administrator if you need to be granted a new privilege for that object.
Is the show function output persistent in Impala?
In Impala 2.5 and higher, the SHOW FUNCTIONS output includes a new column, labelled is persistent. This property is true for Impala built-in functions, C++ UDFs, and Java UDFs created using the new CREATE FUNCTION syntax with no signature.
Can a cancellation statement be cancelled in Impala?
Cancellation: Cannot be cancelled. The SHOW FILES statement displays the files that constitute a specified table, or a partition within a partitioned table. This syntax is available in Impala 2.2 and higher only. The output includes the names of the files, the size of each file, and the applicable partition for a partitioned table.
How is the optional pattern argument used in Impala?
The optional pattern argument is a quoted string literal, using Unix-style * wildcards and allowing | for alternation. The preceding LIKE keyword is also optional. All object names are stored in lowercase, so use all lowercase letters in the pattern string. For example: Cancellation: Cannot be cancelled.
What is the default database name in Impala?
The DEFAULT database is the one you initially connect to; a database with that name is present on every system. You can issue SHOW TABLES IN db_name without going into a database, or SHOW TABLES once you are inside a particular database.
What is the return type of Impala date and time?
If either argument is NULL, the result is NULL . Return type: INT (either -1, 0, 1, or NULL ) Added in: Impala 2.3.0 Usage notes: Usage notes: A comparison function for TIMESTAMP values that only tests whether the date and time increases, decreases, or stays the same. Similar to the SIGN () function for numeric values.
What do I need to know about a 2014 Chevy Impala?
Description: Used 2014 Chevrolet Impala LTZ with Blind Spot Monitoring, Tire Pressure Warning, Audio and cruise controls on steering wheel, Remote Start, Stability Control. *** All prices subject to change without notice.This pricing excludes; registration, tax, document prep fee and/or any other applicable fees.