Tom Lane 5c292e6b90 Declare lead() and lag() using anycompatible not anyelement. ... This allows use of a "default" expression that doesn't slavishly match the data column's type. Formerly you got something like "function lag(numeric, integer, integer) does not exist", which is not just unhelpful but actively misleading. The SQL spec suggests that the default should be coerced to the data column's type, but this implementation instead chooses the common supertype, which seems at least as reasonable. (Note: I took the opportunity to run "make reformat-dat-files" on pg_proc.dat, so this commit includes some cosmetic changes to recently-added entries that aren't related to lead/lag.) Vik Fearing Discussion: https://postgr.es/m/77675130-89da-dab1-51dd-492c93dcf5d1@postgresfriends.org		2020-11-04 15:08:37 -05:00
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src	Declare lead() and lag() using anycompatible not anyelement.	2020-11-04 15:08:37 -05:00
KNOWN_BUGS
Makefile
MISSING_FEATURES
TODO