+ <replaceable>context_item</replaceable> can be any character string that + can be succesfully cast to <type>jsonb</type>.
typo: "succesfully", should be "successfully" maybe rephrase it to: + <replaceable>context_item</replaceable> can be jsonb type or any character string that + can be successfully cast to <type>jsonb</type>. + <literal>ON EMPTY</literal> expression (that is caused by empty result + of <replaceable>path_expression</replaceable>evaluation). need extra white space, should be + of <replaceable>path_expression</replaceable> evaluation). + The default when <literal>ON EMPTY</literal> or <literal>ON ERROR</literal> + is not specified is to return a SQL NULL value when the respective + situation occurs. Correct me if I'm wrong. we can just say: + The default when <literal>ON EMPTY</literal> or <literal>ON ERROR</literal> + is not specified is to return an SQL NULL value. Anyway, this is a minor issue.
