如何將變量傳遞給SQL字符串

Question

我有一個spark接受值的sql查詢。

Dataset getQuery = spark.sql("select * from trafficdata where message_time between 1486036800000 and 1486108800000 ") 

我想這一次是作爲變量像

Long val1 = 1486036800000 
Long val2 = 1486108800000 
Dataset getQuery = spark.sql("select * from trafficdata where message_time between $val1 and $val2 ") 

我$val1但它不工作嘗試。任何人都可以建議，如何在java中做到這一點？

Answer 1

，我認爲你應該寫查詢作爲

"select * from trafficdata where message_time between '" + val1 + "' and '" + val2 + "'" 

Answer 2

嘗試一下這樣的：[？爪哇 - 包括字符串中的變量]

getQuery = spark.sql(String.format("select * from trafficdata where message_time between %d and %d ", val1, val2));