Thread: pgsql: doc: add examples of creative use of unique expression indexes

pgsql: doc: add examples of creative use of unique expression indexes

From
Bruce Momjian
Date:
doc:  add examples of creative use of unique expression indexes

Unique expression indexes can constrain data in creative ways, so show
two examples.

Reported-by: Tuomas Leikola

Discussion: https://postgr.es/m/156760275564.1127.12321702656456074572@wrigleys.postgresql.org

Backpatch-through: 9.4

Branch
------
REL_11_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/e6cf1724d8cdf81b4ec7e613e1b41357834261f9

Modified Files
--------------
doc/src/sgml/indices.sgml | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)