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我想從NodeRed mysql節點獲取簡單輸出。從mysql節點獲取數據red
我插入的數據到數據庫與功能:
data = (msg.payload);
var m = {
topic : "INSERT INTO `data`.`mytable` (`two`) VALUES ('" + data + "');"
};
return m;
然後我又選擇功能後,DB以檢索數據:
m = {
topic : "SELECT `two` FROM `data`.`mytable`;"
};
return m;
我得到的消息:
SELECT `two` FROM `data`.`mytable`; : msg.payload : undefined
undefined