GAUSS-03801：cannot perform DELETE RETURNING on relation '%s' SQLSTATE: 0A000
错误码
错误描述：cannot perform DELETE RETURNING on relation '%s' SQLSTATE: 0A000
错误原因：INSTEAD rule中没有带returning，而原语句带returning，不能对表执行delete returning。
解决方法：需要使用带有returning子句的无条件的ON DELETE DO INSTEAD rule。
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