K 10
svn:author
V 2
pi
K 8
svn:date
V 27
2015-04-03T20:02:03.276132Z
K 7
svn:log
V 415
databases/cego: 2.20.22 -> 2.20.23

- SQL optimizer improvement was added. In case of select conditions
  with "a is null", neither index nor btree was used. Just for "a = null",
  the index was used. This has been fixed.
- Added fix for btree null value handling. A dedicated null value
  flag was introduced for each btree value ( class CegoBTreeValue )
  to handle null values.

Submitted by:	lemke@lemke-it.com

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