selectByMap

selectByMap接口是一个查询方法，需要传入一个map集合作为参数。在拼接出的SQL语句中，条件之间只能使用AND进行连接。例如，如果需要查询name为"钱二明"，age为25的员工信息，可以使用selectByMap接口，并传入一个包含"name"和"age"键值对的map集合。拼接的SQL语句将会是"SELECT id,name,password,email,age,admin,dept_id FROM employee WHERE name = ? AND age = ?"。\[1\]
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