All of year's attributes should be put into one grouping element of the ROLLUP. It may be helpful to enclose each grouping element in parenthesis.
year的所有属性都应该放在ROLLUP的一个分组元素中。
All of year's attributes should be put into one grouping element of the ROLLUP. It may be helpful to enclose each grouping element in parenthesis.
year的所有属性都应该放在ROLLUP的一个分组元素中。
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