doc: improve description of subscripting of arrays
authorBruce Momjian <bruce@momjian.us>
Mon, 31 Aug 2020 17:49:17 +0000 (13:49 -0400)
committerBruce Momjian <bruce@momjian.us>
Mon, 31 Aug 2020 17:49:17 +0000 (13:49 -0400)
commit8006ac1c5117a56fcd138d663a3fe3709c8f9988
tree7cd586818dbcbaa244c22af5270da7283cd8c6a5
parent64fd65008c62ec011ba2d0673ca09849ae2b07c8
doc:  improve description of subscripting of arrays

It wasn't clear the non-integers are cast to integers for subscripting,
rather than throwing an error.

Reported-by: sean@materialize.io
Discussion: https://postgr.es/m/159538675800.624.7728794628229799531@wrigleys.postgresql.org

Backpatch-through: 9.5
doc/src/sgml/syntax.sgml