Horton

Add reusable routine for making arrays unique.

Thomas Munro <tmunro@postgresql.org>

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Commit: 7815e7efdb4ce9575b5d8460beb0dd2569d7ca3a
Author: Thomas Munro <tmunro@postgresql.org>
Date: 2019-11-07T04:00:48Z
Releases: 13.0 
Add reusable routine for making arrays unique.

Introduce qunique() and qunique_arg(), which can be used after qsort()
and qsort_arg() respectively to remove duplicate values.  Use it where
appropriate.

Author: Thomas Munro
Reviewed-by: Tom Lane (in an earlier version)
Discussion: https://postgr.es/m/CAEepm%3D2vmFTNpAmwbGGD2WaryM6T3hSDVKQPfUwjdD_5XY6vAA%40mail.gmail.com

Files

PathChange+/−
contrib/hstore/hstore_io.c modified +5 −0
contrib/intarray/_int_tool.c modified +5 −14
contrib/pg_trgm/trgm_op.c modified +3 −22
src/backend/access/nbtree/nbtutils.c modified +3 −16
src/backend/executor/nodeTidscan.c modified +3 −10
src/backend/utils/adt/acl.c modified +4 −11
src/backend/utils/adt/tsgistidx.c modified +3 −26
src/backend/utils/adt/tsquery_op.c modified +4 −25
src/backend/utils/adt/tsvector.c modified +3 −2
src/backend/utils/adt/tsvector_op.c modified +8 −51
src/backend/utils/adt/txid.c modified +2 −17
src/backend/utils/cache/syscache.c modified +7 −14
src/include/lib/qunique.h added +65 −0

Discussion