Document ? operator limitation

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index a074f0a0b6105e257e8af47f0c3b7bf205f84ad2..75aaf10969f7ab00c1fc40ea3e42c6d68a3d036c 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -10184,7 +10184,7 @@ table2-mapping
        <row>
         <entry><literal>?</literal></entry>
         <entry>text</entry>
-        <entry>Does this key/element exist?</entry>
+        <entry>Does this key/element <emphasis>string</emphasis> exist?</entry>
         <entry><literal>'{"a":1, "b":2}'::jsonb ? 'b'</literal></entry>
        </row>
        <row>