mysql - Why does ExtractValue() fail in an UPDATE and succeed in a SELECT? -


when execute query...

update tbl a, (select id, extractvalue(content, '//a[contains(text(), "view")]/@href') url tbl) b set tbl.`url` = b.`url`

...i see error:

error code: 1525 incorrect xml value: 'parse error @ line 57 pos 195: '</div>' unexpected (end-of-input wanted)'

but when execute query...

select id, extractvalue(content, '//a[contains(text(), "view")]/@href') url tbl

...the query succeeds.

why update query fail standalone select query succeeds?


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