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Fix UNION/INTERSECT/EXCEPT so that when two inputs being merged have

author Tom Lane <tgl@sss.pgh.pa.us>

2006年8月10日 02:36:29 +0000 (02:36 +0000)

committer Tom Lane <tgl@sss.pgh.pa.us>

2006年8月10日 02:36:29 +0000 (02:36 +0000)

commit 0ee26100b64702f2fb4cd65c6dfdfb8f31e88130

tree a10c4a1937f8707bc94950216ee8fdb4f0a61fe8 tree

parent e860e746e15a6c3bc26d7e337162a22e403f5a79 commit | diff

Fix UNION/INTERSECT/EXCEPT so that when two inputs being merged have
same data type and same typmod, we show that typmod as the output
typmod, rather than generic -1. This responds to several complaints
over the past few years about UNIONs unexpectedly dropping length or
precision info.

src/backend/nodes/copyfuncs.c diff | blob | blame | history

src/backend/nodes/equalfuncs.c diff | blob | blame | history

src/backend/nodes/outfuncs.c diff | blob | blame | history

src/backend/nodes/readfuncs.c diff | blob | blame | history

src/backend/optimizer/path/allpaths.c diff | blob | blame | history

src/backend/optimizer/prep/prepjointree.c diff | blob | blame | history

src/backend/optimizer/prep/prepunion.c diff | blob | blame | history

src/backend/optimizer/util/tlist.c diff | blob | blame | history

src/backend/parser/analyze.c diff | blob | blame | history

src/include/catalog/catversion.h diff | blob | blame | history

src/include/nodes/parsenodes.h diff | blob | blame | history

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