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)
commite8e15385a12d3f733e67fdad41f276633ab57fd3
tree8e9421994be29c8a1b85e1e522dcbfd1168d4ee5
parent104a7dad363d9c3cff89c068ceadf2f1e5a9c8b9
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