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authorTom Lane <tgl@sss.pgh.pa.us>2019-12-23 12:53:12 -0500
committerTom Lane <tgl@sss.pgh.pa.us>2019-12-23 12:53:12 -0500
commit39ebb943de9dd64e305d17329b8989e3061d03a5 (patch)
treecb756e0af63d8952c1e47e4e476703673bee36b3 /src/backend/access/gist
parentfc7695891d357a54f0258142de85f88520796b9b (diff)
downloadpostgresql-39ebb943de9dd64e305d17329b8989e3061d03a5.tar.gz
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Disallow partition key expressions that return pseudo-types.
This wasn't checked originally, but it should have been, because in general pseudo-types can't be stored to and retrieved from disk. Notably, partition bound values of type "record" would not be interpretable by another session. In v12 and HEAD, add another flag to CheckAttributeType's repertoire so that it can produce a specific error message for this case. That's infeasible in older branches without an ABI break, so fall back to a slightly-less-nicely-worded error message in v10 and v11. Problem noted by Amit Langote, though this patch is not his initial solution. Back-patch to v10 where partitioning was introduced. Discussion: https://postgr.es/m/CA+HiwqFUzjfj9HEsJtYWcr1SgQ_=iCAvQ=O2Sx6aQxoDu4OiHw@mail.gmail.com
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