如何将变量传递给SQL字符串

Question

我有一个spark接受值的sql查询。

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

我想这一次是作为变量像

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

我$val1但它不工作尝试。任何人都可以建议，如何在java中做到这一点？

Answer 1

，我认为你应该写查询作为

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

Answer 2

尝试一下这样的：[？爪哇 - 包括字符串中的变量]

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