Add SQL function array_reverse() This function takes in input an array, and reverses the position of all its elements. This operation only affects the first dimension of the array, like array_shuffle().
The implementation structure is inspired by array_shuffle(), with a subroutine called array_reverse_n() that may come in handy in the future, should more functions able to reverse portions of arrays be introduced. Bump catalog version. Author: Aleksander Alekseev Reviewed-by: Ashutosh Bapat, Tom Lane, Vladlen Popolitov Discussion: https://postgr.es/m/CAJ7c6TMpeO_ke+QGOaAx9xdJuxa7r=49-anmh3g5476e3cx...@mail.gmail.com Branch ------ master Details ------- https://git.postgresql.org/pg/commitdiff/49d6c7d8dabad8c59ba21afe72ff32e79f822291 Modified Files -------------- doc/src/sgml/func.sgml | 17 +++++ src/backend/utils/adt/array_userfuncs.c | 112 ++++++++++++++++++++++++++++++++ src/include/catalog/catversion.h | 2 +- src/include/catalog/pg_proc.dat | 3 + src/test/regress/expected/arrays.out | 31 +++++++++ src/test/regress/sql/arrays.sql | 7 ++ 6 files changed, 171 insertions(+), 1 deletion(-)
