我正在尝试从SQL Server读取行的子集作为Spark Dataframe。我可以读取整个表，但无法指定查询来读取行的子集。
这就是我正在尝试的事情..
Exception in thread "main" java.sql.SQLException: Incorrect syntax near the keyword 'WHERE'.
at net.sourceforge.jtds.jdbc.SQLDiagnostic.addDiagnostic(SQLDiagnostic.java:372)
at net.sourceforge.jtds.jdbc.TdsCore.tdsErrorToken(TdsCore.java:2886)
at net.sourceforge.jtds.jdbc.TdsCore.nextToken(TdsCore.java:2328)
at net.sourceforge.jtds.jdbc.TdsCore.getMoreResults(TdsCore.java:638)
at net.sourceforge.jtds.jdbc.JtdsStatement.executeSQLQuery(JtdsStatement.java:506)
at net.sourceforge.jtds.jdbc.JtdsPreparedStatement.executeQuery(JtdsPreparedStatement.java:979)
at org.apache.spark.sql.execution.datasources.jdbc.JDBCRDD$.resolveTable(JDBCRDD.scala:123)
at org.apache.spark.sql.execution.datasources.jdbc.JDBCRelation.<init>(JDBCRelation.scala:91)
at org.apache.spark.sql.execution.datasources.jdbc.DefaultSource.createRelation(DefaultSource.scala:60)
at org.apache.spark.sql.execution.datasources.ResolvedDataSource$.apply(ResolvedDataSource.scala:125)
at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:114)
at com.company.ml.proj.datatransfer.SqlServerDataSource.getData(SqlServerDataSource.scala:24)
at com.company.ml.proj.datatransfer.Main$.main(Main.scala:17)
at com.company.ml.proj.datatransfer.Main.main(Main.scala)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.spark.deploy.SparkSubmit$.org$apache$spark$deploy$SparkSubmit$$runMain(SparkSubmit.scala:674)
at org.apache.spark.deploy.SparkSubmit$.doRunMain$1(SparkSubmit.scala:180)
at org.apache.spark.deploy.SparkSubmit$.submit(SparkSubmit.scala:205)
at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:120)
at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala)
我收到如下错误，
dbtable在page上提到WHERE可以是SQL查询。
有关如何解决此问题的任何指示。
如果我在没有{{1}}子句的情况下给出查询，那么也会得到相同的错误。