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Tomas Vondra cc052b423a Fix pg_mcv_list_items() to produce text[] 
The function pg_mcv_list_items() returns values stored in MCV items. The
items may contain columns with different data types, so the function was
generating text array-like representation, but in an ad-hoc way without
properly escaping various characters etc.

Fixed by simply building a text[] array, which also makes it easier to
use from queries etc.

Requires changes to pg_proc entry, so bump catversion.

Backpatch to 12, where multi-column MCV lists were introduced.

Author: Tomas Vondra
Reviewed-by: Dean Rasheed
Discussion: https://postgr.es/m/20190618205920.qtlzcu73whfpfqne@development
2019-07-05 16:18:10 +02:00
..
backend Fix pg_mcv_list_items() to produce text[] 2019-07-05 16:18:10 +02:00
bin Fix accidentally swapped error message arguments 2019-07-02 23:45:00 +01:00
common Make script output more pgindent compatible 2019-06-24 22:50:56 +02:00
fe_utils Update stale comments, and fix comment typos. 2019-06-08 10:12:26 -07:00
include Fix pg_mcv_list_items() to produce text[] 2019-07-05 16:18:10 +02:00
interfaces Fix many typos and inconsistencies 2019-07-01 10:00:23 +09:00
makefiles Define WIN32_STACK_RLIMIT throughout win32 and cygwin builds. 2019-04-09 08:25:39 -07:00
pl Ensure plpgsql result tuples have the right composite type marking. 2019-07-03 18:08:53 -04:00
port Fix more typos and inconsistencies in the tree 2019-06-17 16:13:16 +09:00
template Yet further rethinking of build changes for macOS Mojave. 2018-11-02 18:54:00 -04:00
test Fix pg_mcv_list_items() to produce text[] 2019-07-05 16:18:10 +02:00
timezone Phase 2 pgindent run for v12. 2019-05-22 13:04:48 -04:00
tools Add support for Visual Studio 2019 in build scripts 2019-07-03 08:57:22 +09:00
tutorial Phase 2 pgindent run for v12. 2019-05-22 13:04:48 -04:00
.gitignore
DEVELOPERS
Makefile Fix partial-build problems introduced by having more generated headers. 2018-04-09 16:42:10 -04:00
Makefile.global.in Consistently test for in-use shared memory. 2019-04-12 22:36:38 -07:00
Makefile.shlib Ensure static libraries have correct mod time even if ranlib messes it up. 2018-11-29 15:53:44 -05:00
nls-global.mk Move logging.h and logging.c from src/fe_utils/ to src/common/. 2019-05-14 14:20:10 -04:00