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/[email protected] Backpatch-through: 9.4 Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/a9760d0f3cb523336b5fdd9d6c5985e39a8588a1 Modified Files -------------- doc/src/sgml/indices.sgml | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+)
