添加唯一索引:
>ALTER TABLE students ADD CONSTRAINT uni_name UNIQUE (name);
只添加唯一约束而不添加唯一索引:
>ALTER TABLE students ADD UNIQUE INDEX uni_name (name);
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小甜甜郑林200
添加唯一索引:
>ALTER TABLE students
ADD CONSTRAINT uni_name UNIQUE (name);
只添加唯一约束而不添加唯一索引:
>ALTER TABLE students
ADD UNIQUE INDEX uni_name (name);