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Explain COALESCE example in the docs.

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Bruce Momjian
2011-10-04 21:47:07 -04:00
parent 41e461d36f
commit 9d23d7cdaf
1 changed files with 2 additions and 0 deletions
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doc/src/sgml/func.sgml
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@ -10015,6 +10015,8 @@ SELECT ... WHERE CASE WHEN x <> 0 THEN y/x > 1.5 ELSE false END;
<programlisting> <programlisting>
SELECT COALESCE(description, short_description, '(none)') ... SELECT COALESCE(description, short_description, '(none)') ...
</programlisting> </programlisting>
This returns <varname>description</> if it is not null, or
<varname>short_description</> if it is not null, or <literal>(none)</>.
</para> </para>
<para> <para>