Alvaro Herrera 63cbee6a78 doc: Reword restriction on partition keys in unique indexes
New wording from David G. Johnston, who noticed the unreadable original
also.  Include his suggested test case as well.

Fix a typo I noticed elsewhere while doing this.

Discussion: https://postgr.es/m/CAKFQuwY4Ld7ecxL_KAmaxwt0FUu5VcPPN2L4dh+3BeYbrdBa5g@mail.gmail.com
2018-03-12 13:32:28 -03:00
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2017-08-14 18:08:30 -04:00