tree ddfe97990070621440028ca453ff3018e1d4508d
parent f4485553da14fff7c653c7724cb8b8256ada7b3b
author Dmitry Lychagin <dmitry.lychagin@couchbase.com> 1517362986 -0800
committer Dmitry Lychagin <dmitry.lychagin@couchbase.com> 1518030393 -0800

[ASTERIXDB-2272][FUN] Count character positions from 0

- user model changes: yes
- storage format changes: no
- interface changes: no

Details:
- Count character positions in strings, binary from 0 instead of 1
- Affects following built-in functions:
  position(), regexp_position(), substr()/subtring(),
  sub_binary(), find-binary()
- Introduce new configuration property “compiler.stringoffset”
  for backward compatibility
  compiler.stringoffset = 0 - count from 0 (new default)
  compiler.stringoffset = 1 - count from 1 (backwards-compatible setting)

Change-Id: Icdb2c241983d5f592b2695ef16eae9951518d7fd
Reviewed-on: https://asterix-gerrit.ics.uci.edu/2342
Reviewed-by: Dmitry Lychagin <dmitry.lychagin@couchbase.com>
Tested-by: Dmitry Lychagin <dmitry.lychagin@couchbase.com>