Because the target row has already been updated once, Informix throws the -26095 error when this situation occurs.
因为目标行已经被更新一次，当这种情形发生时，Informix会抛出- 26095错误。
When this situation is not achieved, the result is data skew.
当不具备这样的条件时，就会造成数据倾斜。
When this situation is not achieved, the result is data skew.
当不具备这样的条件时，就会造成数据倾斜。
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