MySQL error Query execution was interrupted, maximum statement execution time exceeded

MySQL 查询时，报如下错：
Query execution was interrupted, maximum statement execution time exceeded

查询数据库最大语句执行时间,默认为10s，单位是毫秒

SELECT @@global.max_execution_time

设置最大执行时间, 设置为30s

SET global max_execution_time = 30000;