2bc7e886fc
When REINDEX CONCURRENTLY is processing the index that supports a
constraint, there are periods during which multiple indexes match the
constraint index's definition. Those must all be included in the set of
inferred index for INSERT ON CONFLICT, in order to avoid spurious
"duplicate key" errors.
To fix, we set things up to match all indexes against attributes,
expressions and predicates of the constraint index, then return all
indexes that match those, rather than just the one constraint index.
This is more onerous than before, where we would just test the named
constraint for validity, but it's not more onerous than processing
"conventional" inference (where a list of attribute names etc is given).
This is closely related to the misbehaviors fixed by
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PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.