How does the Impala date and time function work?
Because Impala implicitly converts string values into TIMESTAMP, you can pass date/time values represented as strings (in the standard yyyy-MM-dd HH:mm:ss.SSS format) to this function. The result is a string using different separator characters, order of fields, spelled-out month names, or other variation of the date/time string representation.
Is the 2014 Chevy Impala a rental car?
Instead, the aging car has become synonymous with rental cars — or precisely the opposite of what a flagship is supposed to conjure. That’s about to change with the completely redesigned 2014 Chevrolet Impala, which delivers the kind of comfort, roominess and luxury touches expected of a true flagship .
What kind of horsepower does a 2014 Chevy Impala have?
Driving the Used 2014 Chevrolet Impala. The optional 3.6-liter V6 gives the Impala both praiseworthy fuel economy and the highest horsepower number of any naturally aspirated V6 in the segment. Its quicker-than-you’d-guess 0-to-60-mph time of 6.8 seconds is just one indication that the V6-powered Impala feels powerful in any situation.
When to use trunc OR SELECT statement in Impala?
SELECT statement to insert into a partitioned table to split up TIMESTAMP values into individual parts, if the partitioned table has separate partition key columns representing year, month, day, and so on. If you need to divide by more complex units of time, such as by week or by quarter, use the TRUNC () function instead.
Why are there capacity issues with Hadoop Impala?
The capacity issues could be because of a high volume of concurrent queries, because of heavy-duty join and aggregation queries that require large amounts of memory, or because Impala is being used alongside other Hadoop data management components and the resource usage of Impala must be constrained to work well in a multitenant deployment.
How does Impala admission control choose the memory limit?
If set, Impala admission control will choose a memory limit between the minimum and maximum value based on the per-host memory estimate for the query. The memory limit chosen determines the amount of memory that Impala admission control will set aside for this query on each host that the query is running on.
What kind of API does impyla use in Python?
Impyla implements the Python DB API v2.0 (PEP 249) database interface (refer to it for API details): The Cursor object also exposes the iterator interface, which is buffered (controlled by cursor.arraysize ): Furthermore the Cursor object returns you information about the columns returned in the query.