Fix incorrect column names in
Fix excessive CPU usage in coordinator for queries that have large string literals containing non-ASCII characters.
Fix potential infinite loop during query optimization when constant expressions fail during evaluation.
Fix incorrect ordering when the same field appears multiple times with different ordering specifications in a window function
ORDER BYclause. For example:
OVER (ORDER BY x ASC, x DESC).
Do not allow dropping or renaming hidden columns.
When preparing to drop a column, ignore hidden columns when checking if the table only has one column.
Improve performance of joins where the condition is a range over a function. For example:
a JOIN b ON b.x < f(a.x) AND b.x > g(a.x)
Improve performance of certain window functions (e.g.,
LAG) with similar specifications.
substr()function to work on
VARBINARYin addition to
Add cast from
Allow usage of
TRYwithin lambda expressions.
Improve ORC reader efficiency by only reading small ORC streams when accessed in the query.
Improve RCFile IO efficiency by increasing the buffer size from 1 to 8 MB.
Fix native memory leak for optimized RCFile writer.
Fix potential native memory leak for optimized ORC writer.
Memory connector changes#
Add support for views.