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Doc: trivial wording adjustment.

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Improve self-referential foreign key example, per suggestion
from David Johnston.

Discussion: https://postgr.es/m/CAKFQuwZTke7+HUn4YUGqu2+gAPi4Cy18TXMrg_Z5nADkxfPNMw@mail.gmail.com
This commit is contained in:
Tom Lane 2021-05-06 09:59:11 -04:00
parent 448b02c005
commit c38cadc090
1 changed files with 1 additions and 1 deletions
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doc/src/sgml/ddl.sgml
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@ -956,7 +956,7 @@ CREATE TABLE tree (
);
</programlisting>
A top-level node would have NULL <structfield>parent_id</structfield>,
but non-NULL <structfield>parent_id</structfield> entries would be
while non-NULL <structfield>parent_id</structfield> entries would be
constrained to reference valid rows of the table.
</para>