Release 0.185#
General#
Fix incorrect column names in
QueryCompletedEvent
.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 BY
clause. 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.Extend
substr()
function to work onVARBINARY
in addition toCHAR
andVARCHAR
.Add cast from
JSON
toROW
.Allow usage of
TRY
within lambda expressions.
Hive#
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#
Add support for views.