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(parent: 97d5548) | patch

author	Bruce Momjian <bruce@momjian.us>
	Sat, 18 Oct 2014 14:31:00 +0000 (10:31 -0400)
committer	Bruce Momjian <bruce@momjian.us>
	Sat, 18 Oct 2014 14:31:00 +0000 (10:31 -0400)
commit	417f92484da8c9a124e7eece8dbfb71f688a0104
tree	d424516b259096cdc9bdafb46af948d1b63e50df	tree
parent	97d554871c3d186db831b35c0eabe6d496e4f54b	commit \| diff

interval: tighten precision specification

interval precision can only be specified after the "interval" keyword if
no units are specified.

Previously we incorrectly checked the units to see if the precision was
legal, causing confusion.

Report by Alvaro Herrera

src/backend/parser/gram.y		diff \| blob \| blame \| history
src/test/regress/expected/interval.out		diff \| blob \| blame \| history
src/test/regress/sql/interval.sql		diff \| blob \| blame \| history

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