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postgresql/src/include/utils
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Dean Rasheed 085f931f52 Allow numeric scale to be negative or greater than precision. 
Formerly, when specifying NUMERIC(precision, scale), the scale had to
be in the range [0, precision], which was per SQL spec. This commit
extends the range of allowed scales to [-1000, 1000], independent of
the precision (whose valid range remains [1, 1000]).

A negative scale implies rounding before the decimal point. For
example, a column might be declared with a scale of -3 to round values
to the nearest thousand. Note that the display scale remains
non-negative, so in this case the display scale will be zero, and all
digits before the decimal point will be displayed.

A scale greater than the precision supports fractional values with
zeros immediately after the decimal point.

Take the opportunity to tidy up the code that packs, unpacks and
validates the contents of a typmod integer, encapsulating it in a
small set of new inline functions.

Bump the catversion because the allowed contents of atttypmod have
changed for numeric columns. This isn't a change that requires a
re-initdb, but negative scale values in the typmod would confuse old
backends.

Dean Rasheed, with additional improvements by Tom Lane. Reviewed by
Tom Lane.

Discussion: https://postgr.es/m/CAEZATCWdNLgpKihmURF8nfofP0RFtAKJ7ktY6GcZOPnMfUoRqA@mail.gmail.com
2021-07-26 14:13:47 +01:00
..
.gitignore Revert "Add gitignore entries for jsonpath_gram.h" 2019-03-23 00:19:34 +01:00
acl.h Fix has_column_privilege function corner case 2021-03-31 13:55:25 -04:00
aclchk_internal.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
array.h Prevent integer overflows in array subscripting calculations. 2021-05-10 10:44:38 -04:00
arrayaccess.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
ascii.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
attoptcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
backend_progress.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
backend_status.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
builtins.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
bytea.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
cash.h Phase 2 of pgindent updates. 2017-06-21 15:19:25 -04:00
catcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
combocid.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
date.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
datetime.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
datum.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
dsa.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
dynahash.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
elog.h Add macro PGWARNING, and make PGERROR available on all platforms. 2021-04-11 13:22:56 -04:00
evtcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
expandeddatum.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
expandedrecord.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
float.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
fmgrtab.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
formatting.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
freepage.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
geo_decls.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
guc.h Allow compute_query_id to be set to 'auto' and make it default 2021-05-15 14:13:09 -04:00
guc_tables.h Revert recovery prefetching feature. 2021-05-10 16:06:09 +12:00
help_config.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
hsearch.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
index_selfuncs.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
inet.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
int8.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
inval.h Rename debug_invalidate_system_caches_always to debug_discard_caches. 2021-07-13 15:01:01 -04:00
json.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
jsonb.h Implementation of subscripting for jsonb 2021-01-31 23:50:40 +03:00
jsonfuncs.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
jsonpath.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
logtape.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
lsyscache.h Preserve pg_attribute.attstattarget across REINDEX CONCURRENTLY 2021-02-10 13:06:48 +09:00
memdebug.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
memutils.h Add function to log the memory contexts of specified backend process. 2021-04-06 13:44:15 +09:00
multirangetypes.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
numeric.h Allow numeric scale to be negative or greater than precision. 2021-07-26 14:13:47 +01:00
old_snapshot.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
palloc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
partcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_crc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_locale.h Revert per-index collation version tracking feature. 2021-05-07 21:10:11 +12:00
pg_lsn.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pg_rusage.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
pidfile.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
plancache.h Improve performance of repeated CALLs within plpgsql procedures. 2021-01-25 22:28:29 -05:00
portal.h Restore the portal-level snapshot after procedure COMMIT/ROLLBACK. 2021-05-21 14:03:59 -04:00
ps_status.h Refactor ps_status.c API 2020-03-11 16:38:31 +01:00
queryenvironment.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
queryjumble.h Pre branch pgindent / pgperltidy run 2021-06-28 11:05:54 -04:00
rangetypes.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
regproc.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
rel.h Replace RelationOpenSmgr() with RelationGetSmgr(). 2021-07-12 17:01:36 -04:00
relcache.h Fix Logical Replication of Truncate in synchronous commit mode. 2021-04-27 08:28:26 +05:30
relfilenodemap.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relmapper.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
relptr.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
reltrigger.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
resowner.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
resowner_private.h Refactor HMAC implementations 2021-04-03 17:30:49 +09:00
rls.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
ruleutils.h Extended statistics on expressions 2021-03-27 00:01:11 +01:00
sampling.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
selfuncs.h Initial pgindent and pgperltidy run for v14. 2021-05-12 13:14:10 -04:00
sharedtuplestore.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
snapmgr.h ALTER TABLE ... DETACH PARTITION ... CONCURRENTLY 2021-03-25 18:00:28 -03:00
snapshot.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
sortsupport.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
spccache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
syscache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
timeout.h Detect POLLHUP/POLLRDHUP while running queries. 2021-04-03 09:02:41 +13:00
timestamp.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tuplesort.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tuplestore.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
typcache.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
tzparser.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
uuid.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
varbit.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
varlena.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
wait_event.h Use WaitLatch() instead of pg_usleep() at end-of-vacuum truncation 2021-07-02 12:58:34 +09:00
xid8.h Update copyright for 2021 2021-01-02 13:06:25 -05:00
xml.h Update copyright for 2021 2021-01-02 13:06:25 -05:00