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Update wording about information schema and name which views potentially

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can have duplicates, per request from Tom.
This commit is contained in:
Bruce Momjian 2011-02-22 23:31:45 -05:00
parent 5a922f13ef
commit 2c72d7042b
1 changed files with 10 additions and 0 deletions
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doc/src/sgml/information_schema.sgml
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@ -32,6 +32,16 @@
automatically-generated constraint names avoid duplicates in the automatically-generated constraint names avoid duplicates in the
same schema, but users can specify such duplicate names. same schema, but users can specify such duplicate names.
</para> </para>
<para>
This problem can appear when querying information schema views like
<literal>referential_constraints</>, <literal>check_constraints</>,
<literal>domain_constraints</>, and
<literal>check_constraint_routine_usage</>. Some other views have
similar issues but contain the table name to help distinguish
duplicate rows, e.g. <literal>table_constraints</>,
<literal>constraint_table_usage</>, <literal>constraint_column_usage</>.
</para>
</note> </note>