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lang-sql
-Xand-doptions forpg_dump.pg_dumpproduces a dump that is restorable in an empty DB.CHECKconstraints are not meant to reference other tables.NOT VALIDas outlined below is a possible fix.CHECKconstraint, then all guarantees are voided, because that's not officially supported, just tolerated. But declaring theCHECKconstraintNOT VALIDmade it work for me in every respect. There may be corner cases I never touched ...