SQLite数据库支持DSum, DCount 函数吗

[欢香Love]

我执行了下面一段SQL语句

UPDATE Series SET SeriesVolume=DSum("ImageVolume", "Images", "SeriesInstanceUID='1.2.826.0.1.3680043.2.461.6118099.4052283247'"), ImageCount=DCount("ImageInstanceUID", "Images", "SeriesInstanceUID='1.2.826.0.1.3680043.2.461.6118099.4052283247'") WHERE SeriesInstanceUID='1.2.826.0.1.3680043.2.461.6118099.4052283247';


出现了如下错误提示：

no such function: DSum Unable to execute statement

大家帮忙看看，谢谢.