题解 | #创建索引#
对first_name创建唯一索引uniq_idx_firstname
https://www.nowcoder.com/practice/e1824daa0c49404aa602cf0cb34bdd75
alter table actor add unique index uniq_idx_firstname(first_name),add index idx_lastname(last_name);
对first_name创建唯一索引uniq_idx_firstname
https://www.nowcoder.com/practice/e1824daa0c49404aa602cf0cb34bdd75
alter table actor add unique index uniq_idx_firstname(first_name),add index idx_lastname(last_name);
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