我正在尝试加入 KSQL 中的两个现有 Kafka 主题。Kafka的一些数据样本（实际值因企业环境有所删减）：
设备主题：
{
"persistTime" : "2020-10-06T13:30:25.373Z",
"previous" : {
"device" : "REDACTED",
"type" : "REDACTED",
"group" : "REDACTED",
"inventoryState" : "unknown",
"managementState" : "registered",
"communicationId" : "REDACTED",
"manufacturer" : "",
"description" : "",
"model" : "",
"location" : {
"geo" : {
"latitude" : "REDACTED",
"longitude" : "REDACTED"
},
"address" : {
"city" : "",
"postalCode" : "",
"street" : "",
"houseNumber" : "",
"floor" : "",
"company" : "",
"country" : "",
"reference" : "", …