Commit26e7eec

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Clarify that NATURAL without matching columns is like CROSS JOIN.

As suggested by Grzegorz Szpetkowski.

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Original file line number	Diff line number	Diff line change
`@@ -266,7 +266,9 @@ FROM <replaceable>table_reference</replaceable> <optional>, <replaceable>table_r`
`266`	`266`	`<literal>USING</>: it forms a <literal>USING</> list`
`267`	`267`	`consisting of all column names that appear in both`
`268`	`268`	`input tables. As with <literal>USING</>, these columns appear`
`269`		`- only once in the output table.`
	`269`	`+ only once in the output table. If there are no common`
	`270`	`+ columns, <literal>NATURAL</literal> behaves like`
	`271`	`+ <literal>CROSS JOIN</literal>.`
`270`	`272`	`</para>`
`271`	`273`
`272`	`274`	`<para>`

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