Mule Parentheses + Replacement Params in JDBC Queries Failing - jdbc

Question

I'm having trouble with Mule executing a JDBC query that works externally. It fails once I put parentheses in it if it also has replacement parameters. I'm wondering if MEL has some issues with parentheses that I don't understand.
The following (simplified) example executes correctly in my flow:
<jdbc:query
key="QueryStrategy"
value="SELECT product_strategy FROM licensing.product WHERE product_sku = #[flowVars['productSku']] OR product_sku IS NULL"/>
If I replace the reference to a flow variable with a constant, I can add parentheses and it still works:
<jdbc:query
key="QueryStrategy"
value="SELECT product_strategy FROM licensing.product WHERE (product_sku = 'Trial' OR product_sku IS NULL)"/>
However, the minute I add parentheses while the replacement parameter is present, I get an exception:
<jdbc:query
key="QueryStrategy"
value="SELECT product_strategy FROM licensing.product WHERE (product_sku = #[flowVars['productSku']] OR product_sku IS NULL)"/>
The exception is shown below. Is this a problem with Mule's formatting of what it sends to Microsoft or some bug in the Microsoft JDBC driver?
EDIT
Here's the amended log with DEBUG turned on for org.mule.transport.jdbc.
com.ca.eai.esb.interceptor.EaiLoggingInterceptor FlowBefore | Flow Name: Main | MULE_REMOTE_CLIENT_ADDRESS: /127.0.0.1:59952 | consumerTransId: E0acd42cb-100d-11e3-a264-852205c1b19e | consumerDateTimeSent: null | consumerApp: null | consumerUsername: null | mule.muleId: null | esbTransCode: null | messageSourceName: endpoint.https.localhost.8088.license.requests.r.v1 | currentTimestamp: 2013-08-28 14:09:55.309
org.mule.transport.jdbc.JdbcConnector Borrowing a dispatcher for endpoint: jdbc://QueryStrategy
org.mule.transport.jdbc.JdbcMessageDispatcher Connecting: JdbcMessageDispatcher{this=5764c302, endpoint=jdbc://QueryStrategy, disposed=false}
org.mule.transport.jdbc.JdbcMessageDispatcher Connected: endpoint.outbound.jdbc://QueryStrategy
org.mule.transport.jdbc.JdbcConnector Borrowed a dispatcher for endpoint: jdbc://QueryStrategy = JdbcMessageDispatcher{this=5764c302, endpoint=jdbc://QueryStrategy, disposed=false}
org.mule.transport.jdbc.JdbcConnector Borrowed dispatcher: JdbcMessageDispatcher{this=5764c302, endpoint=jdbc://QueryStrategy, disposed=false}
org.mule.transport.jdbc.sqlstrategy.SelectSqlStatementStrategy Trying to receive a message with a timeout of 10000
org.mule.transport.jdbc.sqlstrategy.SelectSqlStatementStrategy SQL QUERY: SELECT product_strategy, product_id FROM licensing.product WHERE product_name = ? AND (product_sku is null OR product_sku = ? ) ORDER BY product_sku DESC, params = {My Product,My Product}
org.mule.transport.jdbc.JdbcConnector Returning dispatcher for endpoint: jdbc://QueryStrategy = JdbcMessageDispatcher{this=5764c302, endpoint=jdbc://QueryStrategy, disposed=false}
com.ca.eai.esb.interceptor.EaiLoggingInterceptor FlowLast | Flow Name: Main | MULE_REMOTE_CLIENT_ADDRESS: /127.0.0.1:59952 | consumerTransId: E0acd42cb-100d-11e3-a264-852205c1b19e | consumerDateTimeSent: null | consumerApp: null | consumerUsername: null | mule.muleId: null | esbTransCode: null | messageSourceName: endpoint.https.localhost.8088.license.requests.r.v1 | currentTimestamp: 2013-08-28 14:09:55.791 | elapsedTime: 484ms
org.mule.exception.DefaultMessagingExceptionStrategy
********************************************************************************
Message : Failed to route event via endpoint: DefaultOutboundEndpoint{endpointUri=jdbc://QueryStrategy, connector=JdbcConnector
{
name=Database
lifecycle=start
this=333d612e
numberOfConcurrentTransactedReceivers=4
createMultipleTransactedReceivers=false
connected=true
supportedProtocols=[jdbc]
serviceOverrides=<none>
}
, name='endpoint.jdbc.QueryStrategy', mep=REQUEST_RESPONSE, properties={queryTimeout=-1}, transactionConfig=Transaction{factory=null, action=INDIFFERENT, timeout=0}, deleteUnacceptedMessages=false, initialState=started, responseTimeout=10000, endpointEncoding=UTF-8, disableTransportTransformer=false}. Message payload is of type: String
Code : MULE_ERROR--2
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Exception stack is:
1. com.microsoft.sqlserver.jdbc.SQLServerException: Incorrect syntax near the keyword 'FROM'.(SQL Code: 0, SQL State: + null) (com.microsoft.sqlserver.jdbc.SQLServerException)
com.microsoft.sqlserver.jdbc.SQLServerException:190 (null)
2. com.microsoft.sqlserver.jdbc.SQLServerException: Incorrect syntax near the keyword 'FROM'. Query: SELECT product_strategy, product_id FROM licensing.product WHERE product_name = ? AND (product_sku is null OR product_sku = ? ) ORDER BY product_sku DESC Parameters: [My Product, My Product](SQL Code: 0, SQL State: + null) (java.sql.SQLException)
org.apache.commons.dbutils.QueryRunner:540 (null)
3. Failed to route event via endpoint: DefaultOutboundEndpoint{endpointUri=jdbc://QueryStrategy, connector=JdbcConnector
{
name=Database
lifecycle=start
this=333d612e
numberOfConcurrentTransactedReceivers=4
createMultipleTransactedReceivers=false
connected=true
supportedProtocols=[jdbc]
serviceOverrides=<none>
}
, name='endpoint.jdbc.QueryStrategy', mep=REQUEST_RESPONSE, properties={queryTimeout=-1}, transactionConfig=Transaction{factory=null, action=INDIFFERENT, timeout=0}, deleteUnacceptedMessages=false, initialState=started, responseTimeout=10000, endpointEncoding=UTF-8, disableTransportTransformer=false}. Message payload is of type: String (org.mule.api.transport.DispatchException)
org.mule.transport.AbstractMessageDispatcher:109 (http://www.mulesoft.org/docs/site/current3/apidocs/org/mule/api/transport/DispatchException.html)
--------------------------------------------------------------------------------
Root Exception stack trace:
com.microsoft.sqlserver.jdbc.SQLServerException: com.microsoft.sqlserver.jdbc.SQLServerException: Incorrect syntax near the keyword 'FROM'.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:190)
at com.microsoft.sqlserver.jdbc.SQLServerParameterMetaData.<init>(SQLServerParameterMetaData.java:426)
at com.microsoft.sqlserver.jdbc.SQLServerPreparedStatement.getParameterMetaData(SQLServerPreparedStatement.java:1532)
+ 3 more (set debug level logging or '-Dmule.verbose.exceptions=true' for everything)
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