3 Commits

Author	SHA1	Message	Date
Marcell Szabo	8135ef6eaa	IMPALA-2641: Add IF EXISTS clause to TRUNCATE TABLE statement ... Change-Id: I3169390b0e04f07fb4ea53d987d86a76482d7e9d Reviewed-on: http://gerrit.cloudera.org:8080/1905 Reviewed-by: Dimitris Tsirogiannis <dtsirogiannis@cloudera.com> Reviewed-by: Marcel Kornacker <marcel@cloudera.com> Tested-by: Internal Jenkins	2016-02-19 14:08:58 +00:00
Shant Hovsepian	6d87fe090c	Improve Hll estimate for small cardinalities. ... Based on Google's HyperLogLog++ paper. Uses a bias correcting interpolation as a sub algorithm for Hll estimates within a specific range. Change-Id: If4fe692b4308f6a57aea6167e9bc00db11eaaab9 Reviewed-on: http://gerrit.cloudera.org:8080/415 Tested-by: Internal Jenkins Reviewed-by: Henry Robinson <henry@cloudera.com>	2015-07-16 19:38:17 +00:00
zuowang	304d985523	IMPALA-1139: Implement TRUNCATE TABLE statement ... Synopsis: TRUNCATE [TABLE] [database.]table TRUNCATE quickly removes all rows from a set of tables. TRUNCATE also drops all table and column stats, but preserves HMS partitions and HDFS directories. You must have the INSERT privilege on a table to truncate it. It requires taking the metastoreDdlLock before truncate tables. Examples: TRUNCATE TABLE t1; TRUNCATE t1; Change-Id: I546e4ee0279083f437cdf0e7487faad47957dbf6 Reviewed-on: http://gerrit.cloudera.org:8080/241 Reviewed-by: Alex Behm <alex.behm@cloudera.com> Tested-by: Internal Jenkins	2015-05-14 07:50:34 +00:00