CREATE STABLE product_property_${productKey} ( ts TIMESTAMP, report_time TIMESTAMP, ${field.field} ${field.type} (${field.length}) ) TAGS ( device_key NCHAR(50) ) ALTER STABLE product_property_${productKey} ADD COLUMN ${field.field} ${field.type} (${field.length}) ALTER STABLE product_property_${productKey} MODIFY COLUMN ${field.field} ${field.type} (${field.length}) ALTER STABLE product_property_${productKey} DROP COLUMN ${field.field} INSERT INTO device_property_${device.deviceKey} USING product_property_${device.productKey} TAGS ('${device.deviceKey}') (ts, report_time, ${key} ) VALUES (NOW, #{reportTime}, #{value} )