MySQL insert not exists插入唯一数据

INSERT INTO table_name (id, name, age)
SELECT * FROM (SELECT '1000', 'ndh', 32) AS tmp
WHERE NOT EXISTS (
    SELECT 1 FROM table_name WHERE id = '1000'
)

注意: tmp里的字段不能重复,如果重复会报错,需要用as来指定别名以免重复

MySQL: Insert record if not exists in table