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📜  在 sql 代码示例中复制一列

📅  最后修改于: 2022-03-11 15:05:09.730000             🧑  作者: Mango

代码示例3
ALTER TABLE Table1
ADD SubCategory2 {Type of subcategory 1} {NULL|NOT NULL} 
UPDATE Table1 SET SubCategory2 = SubCategory;