UCanAccess SQL Insert failing; query works fine in

Question

This is my first attempt at building something in Java, and the end goal here is to simply import an excel file into a MS Access database.

I suspect there's some sort of data incompatibility error, or something that UCA is doing to clean queries, but I don't know enough about Java or UCanAccess to track it down.

Here's the query I have assembled, which runs fine to insert data in MS Access directly:

INSERT INTO XXXX_XA_Data_1 ([Date],[Fund Ticker],[Unique ID],[Cash & Cash Equiv],[Mkt Value of Security Holdings],[Today's Future Variation Margin],[Other Net Assets],[Total Net Assets],[Fund Shares],[NAV],[Fund Sales ($)],[Fund Sales (Shares)],[Fund Redemptions ($)],[Fund Redemptions (Shares)]) 
VALUES (#12/01/2001#,"XXXXX","00000000-XXXXX",0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000,0.0000);

Some data has been replaced with X's and 0s, but all of the column names are the same.

I've tried several variants to see what will work, and I can get it to insert Fund Ticker, Unique ID and Cash & Cash Equiv. Based on these attempts, I'm thinking that the date format is breaking it, or some of the column names, but I can't find anyone else who's encountered this exact issue.

Here's the java:

Class.forName("net.ucanaccess.jdbc.UcanaccessDriver");
db = DriverManager.getConnection("jdbc:ucanaccess://C:" + path_db);

...

Statement s = db.createStatement();
try {
  int result = s.executeUpdate(rowquery);
} catch (Exception e) {
  e.printStackTrace();
}

And the full trace:

[2016-02-18 13:37:29.053]: SQL Insert failed for item 1. Aborting with exception: net.ucanaccess.jdbc.UcanaccessSQLException: UCAExc:::3.0.3.1 unexpected token: [
    at net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate(UcanaccessStatement.java:222)
    at DailyImporter.main(DailyImporter.java:226)
Caused by: java.sql.SQLSyntaxErrorException: unexpected token: [
    at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
    at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
    at org.hsqldb.jdbc.JDBCStatement.fetchResult(Unknown Source)
    at org.hsqldb.jdbc.JDBCStatement.executeUpdate(Unknown Source)
    at net.ucanaccess.jdbc.ExecuteUpdate.executeWrapped(ExecuteUpdate.java:67)
    at net.ucanaccess.jdbc.AbstractExecute.executeBase(AbstractExecute.java:152)
    at net.ucanaccess.jdbc.ExecuteUpdate.execute(ExecuteUpdate.java:50)
    at net.ucanaccess.jdbc.UcanaccessStatement.executeUpdate(UcanaccessStatement.java:220)
    ... 1 more
Caused by: org.hsqldb.HsqlException: unexpected token: [
    at org.hsqldb.error.Error.parseError(Unknown Source)
    at org.hsqldb.ParserBase.unexpectedToken(Unknown Source)
    at org.hsqldb.ParserBase.checkIsIdentifier(Unknown Source)
    at org.hsqldb.ParserDQL.readSimpleColumnName(Unknown Source)
    at org.hsqldb.ParserDQL.readSimpleColumnNames(Unknown Source)
    at org.hsqldb.ParserDML.compileInsertStatement(Unknown Source)
    at org.hsqldb.ParserCommand.compilePart(Unknown Source)
    at org.hsqldb.ParserCommand.compileStatements(Unknown Source)
    at org.hsqldb.Session.executeDirectStatement(Unknown Source)
    at org.hsqldb.Session.execute(Unknown Source)
    ... 7 more

Are there column names or other data format issues that need to be resolved here? Or libraries other than UCanAccess that can simply run SELECT/INSERT queries on a MS Access db?

Answer 1

UCanAccess currently has difficulty parsing SQL statements with field names that include an apostrophe (a.k.a. "single quote" character) ', e.g.,

sql = "INSERT INTO XXXX_XA_Data_1 ([Today's Future Variation Margin]) VALUES (1)";

The issue has been reported to the UCanAccess development team and is expected to be fixed in a future release of UCanAccess.

In the meantime, if you don't need to do any sophisticated SQL queries then you could import com.healthmarketscience.jackcess.*; and use the Jackcess API directly. For example, to perform the equivalent of the INSERT statement above you could do

String dbFileSpec = "C:/Users/Public/example.accdb";
try (Database db = DatabaseBuilder.open(new File(dbFileSpec))) {
    Table tbl = db.getTable("XXXX_XA_Data_1");
    HashMap rowData = new HashMap();
    rowData.put("Today's Future Variation Margin", 1);
    tbl.addRowFromMap(rowData);
}