Allow subscripting of hstore values. This is basically a finger exercise to prove that it's possible for an extension module to add subscripting ability. Subscripted fetch from an hstore is not different from the existing "hstore -> text" operator. Subscripted update does seem to be a little easier to use than the traditional update method using hstore concatenation, but it's not a fundamentally new ability.
However, there may be some value in the code as sample code, since it shows what's basically the minimum-complexity way to implement subscripting when one needn't consider nested container objects. Discussion: https://postgr.es/m/[email protected] Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/0ec5f7e78231a621a1d96c4bfedc4a1849a6c6cc Modified Files -------------- contrib/hstore/Makefile | 4 +- contrib/hstore/expected/hstore.out | 23 +++ contrib/hstore/hstore--1.7--1.8.sql | 13 ++ contrib/hstore/hstore.control | 2 +- contrib/hstore/hstore_subs.c | 297 ++++++++++++++++++++++++++++++++++++ contrib/hstore/sql/hstore.sql | 8 + doc/src/sgml/hstore.sgml | 42 +++++ doc/src/sgml/ref/create_type.sgml | 8 +- 8 files changed, 392 insertions(+), 5 deletions(-)
