Jdbc Google BigQuery，为准备语句中的null值引发异常

我们正在尝试使用Jdbc（Simba驱动程序）将数据加载到GoogleBigQuery。当试图在准备好的语句中插入空值时，我们得到了一个异常。当它不是一个预先准备好的语句时，这是有效的。例如，代码（隐藏连接Url）：

生成以下输出：

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

Create table.

Table created.

Executing statement...

 done.

Executing prepared statement...

java.sql.SQLException: [Simba][BigQueryJDBCDriver](100032) Error executing query job. Message: Unparseable query parameter `` in type `TYPE_INT64`, Bad int64 value: null value: 'null'
        at com.simba.googlebigquery.googlebigquery.client.BQClient.insertJob(Unknown Source)
        at com.simba.googlebigquery.googlebigquery.client.BQClient.executeQuery(Unknown Source)
        at com.simba.googlebigquery.googlebigquery.dataengine.BQAbstractExecutor.execute(Unknown Source)
        at com.simba.googlebigquery.googlebigquery.dataengine.BQSQLExecutor.execute(Unknown Source)
        at com.simba.googlebigquery.jdbc.common.SPreparedStatement.executeWithParams(Unknown Source)
        at com.simba.googlebigquery.jdbc.common.SPreparedStatement.executeAnyUpdate(Unknown Source)
        at com.simba.googlebigquery.jdbc.common.SPreparedStatement.executeUpdate(Unknown Source)
        at Program.doPreparedStatement(Program.java:35)
Caused by: com.simba.googlebigquery.support.exceptions.GeneralException: [Simba][BigQueryJDBCDriver](100032) Error executing query job. Message: Unparseable query parameter `` in type `TYPE_INT64`, Bad int64 value: null value: 'null'
        ... 8 more

---

我发现在为（例如）数字类型添加BigQuery支持时，这一点很有效：

statement.setBigDecimal（6，null）；

BigDecimal

类型是唯一一种非原语的数字JDBC类型。对于其他数据类型，如果支持，则使用其各自的setter；如果Simba仍然不喜欢各自类型的

null

值，则使用其各自的setter，例如：

• Boolean

• 日期

• 时间

如果对任何转换问题有疑问（例如，因为Simba似乎将

BigDecimal

绑定为

STRING

，目前至少在版本1.2.13.1016中），请确保强制转换绑定变量，例如：

CAST（？AS INT64）

SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.

Create table.

Table created.

Executing statement...

 done.

Executing prepared statement...

java.sql.SQLException: [Simba][BigQueryJDBCDriver](100032) Error executing query job. Message: Unparseable query parameter `` in type `TYPE_INT64`, Bad int64 value: null value: 'null'
        at com.simba.googlebigquery.googlebigquery.client.BQClient.insertJob(Unknown Source)
        at com.simba.googlebigquery.googlebigquery.client.BQClient.executeQuery(Unknown Source)
        at com.simba.googlebigquery.googlebigquery.dataengine.BQAbstractExecutor.execute(Unknown Source)
        at com.simba.googlebigquery.googlebigquery.dataengine.BQSQLExecutor.execute(Unknown Source)
        at com.simba.googlebigquery.jdbc.common.SPreparedStatement.executeWithParams(Unknown Source)
        at com.simba.googlebigquery.jdbc.common.SPreparedStatement.executeAnyUpdate(Unknown Source)
        at com.simba.googlebigquery.jdbc.common.SPreparedStatement.executeUpdate(Unknown Source)
        at Program.doPreparedStatement(Program.java:35)
Caused by: com.simba.googlebigquery.support.exceptions.GeneralException: [Simba][BigQueryJDBCDriver](100032) Error executing query job. Message: Unparseable query parameter `` in type `TYPE_INT64`, Bad int64 value: null value: 'null'
        ... 8 more