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doc: Spell checking

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Peter Eisentraut
2015-09-10 21:22:21 -04:00
parent 87efbc2be1
commit 103ef20211
36 changed files with 119 additions and 119 deletions
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doc/src/sgml/ref/create_domain.sgml
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@@ -209,8 +209,8 @@ INSERT INTO tab (domcol) VALUES ((SELECT domcol FROM tab WHERE false));
<para>
It is very difficult to avoid such problems, because of SQL's general
assumption that NULL is a valid value of every datatype. Best practice
therefore is to design a domain's constraints so that NULL is allowed,
assumption that a null value is a valid value of every data type. Best practice
therefore is to design a domain's constraints so that a null value is allowed,
and then to apply column <literal>NOT NULL</> constraints to columns of
the domain type as needed, rather than directly to the domain type.
</para>