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2a10fdc430
When using the following functions, users could see various types of errors of the type "cache lookup failed for OID XXX" with elog(), that can only be used for internal errors: * pg_describe_object() * pg_identify_object() * pg_identify_object_as_address() The set of APIs managing object addresses for all object types are made smarter by gaining a new argument "missing_ok" that allows any caller to control if an error is raised or not on an undefined object. The SQL functions listed above are changed to handle the case where an object is missing. Regression tests are added for all object types for the cases where these are undefined. Before this commit, these cases failed with cache lookup errors, and now they basically return NULL (minus the name of the object type requested). Author: Michael Paquier Reviewed-by: Aleksander Alekseev, Dmitry Dolgov, Daniel Gustafsson, Álvaro Herrera, Kyotaro Horiguchi Discussion: https://postgr.es/m/CAB7nPqSZxrSmdHK-rny7z8mi=EAFXJ5J-0RbzDw6aus=wB5azQ@mail.gmail.com |
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