在使用Apache DolphinScheduler调度执行复杂的HiveSQL时,HQL包含多种海豚无法正确识别的符号,怎么办?本文提供了可行的思路和方法,供用户参考。
一、目的
在Hive中完成复杂JSON,既有对象还有数组而且数组中包含数组的解析后,原本以为没啥问题了,结果在DolphinScheduler中调度又出现了大问题,搞了一天。试了很多种方法,死了无数脑细胞,才解决了这个问题!
二、HiveSQL
insert overwrite table hurys_dc_dwd.dwd_json_statistics partition(day)
select
t1.device_no,
source_device_type,
sn,
model,
create_time,
cycle,
get_json_object(coil_list,'$.laneNo') lane_no,
get_json_object(coil_list,'$.laneType') lane_type,
section_no,
get_json_object(coil_list,'$.coilNo') coil_no,
get_json_object(coil_list,'$.volumeSum') volume_sum,
get_json_object(coil_list,'$.volumePerson') volume_person,
get_json_object(coil_list,'$.volumeCarNon') volume_car_non,
get_json_object(coil_list,'$.volumeCarSmall') volume_car_small,
get_json_object(coil_list,'$.volumeCarMiddle') volume_car_middle,
get_json_object(coil_list,'$.volumeCarBig') volume_car_big,
get_json_object(coil_list,'$.speedAvg') speed_avg,
get_json_object(coil_list,'$.speed85') speed_85,
get_json_object(coil_list,'$.timeOccupancy') time_occupancy,
get_json_object(coil_list,'$.averageHeadway') average_headway,
get_json_object(coil_list,'$.averageGap') average_gap,
substr(create_time,1,10) day
from (select
get_json_object(statistics_json,'$.deviceNo') device_no,
get_json_object(statistics_json,'$.sourceDeviceType') source_device_type,
get_json_object(statistics_json,'$.sn') sn,
get_json_object(statistics_json,'$.model') model,
get_json_object(statistics_json,'$.createTime') create_time ,
get_j

最低0.47元/天 解锁文章
889

被折叠的 条评论
为什么被折叠?



