执行 INSERT 语句 HSQL Java 的异常

【问题标题】：Exception executing INSERT statement HSQL Java执行 INSERT 语句 HSQL Java 的异常
【发布时间】：2014-03-24 12:49:15
【问题描述】：

我有一个简单的代码，它让我发疯......

public void insertVectorEstacionario() {
    DBManager dbM = DBManager.instance();
    if(N == 3) {
        dbM.insert("INSERT INTO Markov(IdIndicador, FechaDesde, FechaHasta, Pv, Pa, Pr, Pn) VALUES(" + 
                Integer.toString(idIndicador) + "," + "#" + inicio_periodo.toString() + "#" + "," + "#" + fin_periodo.toString() + "#" + "," +
                Double.toString(vector_estacionario[0]) + "," + Double.toString(vector_estacionario[1]) + "," + Double.toString(vector_estacionario[2]) + "," + Double.toString(0.0) + ")");

    }

    if(N == 4) {
        dbM.insert("INSERT INTO Markov(IdIndicador, FechaDesde, FechaHasta, Pv, Pa, Pr, Pn) VALUES(" + 
        Integer.toString(idIndicador) + "," + "#" + inicio_periodo.toString() + "#" + "," + "#" + fin_periodo.toString() + "#" + "," +
        Double.toString(vector_estacionario[0]) + "," + Double.toString(vector_estacionario[1]) + "," + Double.toString(vector_estacionario[2]) + "," + Double.toString(vector_estacionario[3]) + ")");
    }
}

现在，当 N = 4 时执行的第二个插入语句工作正常，问题在于第一个语句（当 N = 3 时）抛出一个嵌套异常，如下所示：

net.ucanaccess.jdbc.UcanaccessSQLException: unexpected token: Z_0536632167783088E required: )
at net.ucanaccess.jdbc.UcanaccessStatement.execute(UcanaccessStatement.java:110)
at com.operativa.quartilegenerator.datamodel.DBManager.insert(DBManager.java:71)
at com.operativa.quartilegenerator.GenerarMarkov.insertVectorEstacionario(GenerarMarkov.java:85)
at com.operativa.quartilegenerator.QuartileGUI$16$1.doInBackground(QuartileGUI.java:969)
at com.operativa.quartilegenerator.QuartileGUI$16$1.doInBackground(QuartileGUI.java:1)
at javax.swing.SwingWorker$1.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at javax.swing.SwingWorker.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.sql.SQLSyntaxErrorException: unexpected token: Z_0536632167783088E required: )
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.execute(Unknown Source)
at net.ucanaccess.jdbc.Execute.executeWrapped(Execute.java:62)
at net.ucanaccess.jdbc.AbstractExecute.executeBase(AbstractExecute.java:121)
at net.ucanaccess.jdbc.Execute.execute(Execute.java:52)
at net.ucanaccess.jdbc.UcanaccessStatement.execute(UcanaccessStatement.java:107)
... 10 more
Caused by: org.hsqldb.HsqlException: unexpected token: Z_0536632167783088E required: )
at org.hsqldb.error.Error.parseError(Unknown Source)
at org.hsqldb.ParserBase.unexpectedTokenRequire(Unknown Source)
at org.hsqldb.ParserBase.readThis(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesValueExpressionPrimary(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesPrimary(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesFactor(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesTerm(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesCommonValueExpression(Unknown Source)
at org.hsqldb.ParserDQL.XreadValueExpressionOrNull(Unknown Source)
at org.hsqldb.ParserDQL.XreadValueExpressionWithContext(Unknown Source)
at org.hsqldb.ParserDQL.readRow(Unknown Source)
at org.hsqldb.ParserDQL.XreadContextuallyTypedTable(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)
... 16 more

这两个语句几乎相同，只是改变了第四个参数。我尝试了一切，但无法完成这项工作。提前感谢您提供的任何帮助。

使用 PREPARE_STATEMENT：

public void insertVectorEstacionario() {
    DBManager dbM = DBManager.instance();
    PreparedStatement n3 = null;

    String strn3 = String.format("INSERT INTO Markov(IdIndicador, FechaDesde, FechaHasta, Pv, Pa, Pr, Pn) VALUES(" + 
            Integer.toString(idIndicador) + "," + "#" + inicio_periodo.toString() + "#" + "," + "#" + fin_periodo.toString() + "#" + "," +
            Double.toString(vector_estacionario[0]) + "," + Double.toString(vector_estacionario[1]) + "," + Double.toString(vector_estacionario[2]) + "," + "0.823749287592)");

    if(N == 3) {

        try {
            n3 = dbM.getConnection().prepareStatement(strn3);
            n3.execute();
        } catch(Exception e){e.printStackTrace();}
    }

}

这就是堆栈：

net.ucanaccess.jdbc.UcanaccessSQLException: unexpected token: Z_8901313574667937E required: )
at net.ucanaccess.jdbc.UcanaccessConnection.prepareStatement(UcanaccessConnection.java:455)
at com.operativa.quartilegenerator.GenerarMarkov.insertVectorEstacionario(GenerarMarkov.java:101)
at com.operativa.quartilegenerator.QuartileGUI$16$1.doInBackground(QuartileGUI.java:969)
at com.operativa.quartilegenerator.QuartileGUI$16$1.doInBackground(QuartileGUI.java:1)
at javax.swing.SwingWorker$1.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at javax.swing.SwingWorker.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.sql.SQLSyntaxErrorException: unexpected token: Z_8901313574667937E required: )
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.<init>(Unknown Source)
at org.hsqldb.jdbc.JDBCConnection.prepareStatement(Unknown Source)
at net.ucanaccess.jdbc.UcanaccessConnection.prepareStatement(UcanaccessConnection.java:453)
... 9 more
Caused by: org.hsqldb.HsqlException: unexpected token: Z_8901313574667937E required: )
at org.hsqldb.error.Error.parseError(Unknown Source)
at org.hsqldb.ParserBase.unexpectedTokenRequire(Unknown Source)
at org.hsqldb.ParserBase.readThis(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesValueExpressionPrimary(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesPrimary(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesFactor(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesTerm(Unknown Source)
at org.hsqldb.ParserDQL.XreadAllTypesCommonValueExpression(Unknown Source)
at org.hsqldb.ParserDQL.XreadValueExpressionOrNull(Unknown Source)
at org.hsqldb.ParserDQL.XreadValueExpressionWithContext(Unknown Source)
at org.hsqldb.ParserDQL.readRow(Unknown Source)
at org.hsqldb.ParserDQL.XreadContextuallyTypedTable(Unknown Source)
at org.hsqldb.ParserDML.compileInsertStatement(Unknown Source)
at org.hsqldb.ParserCommand.compilePart(Unknown Source)
at org.hsqldb.ParserCommand.compileStatement(Unknown Source)
at org.hsqldb.Session.compileStatement(Unknown Source)
at org.hsqldb.StatementManager.compile(Unknown Source)
at org.hsqldb.Session.execute(Unknown Source)
... 12 more

【问题讨论】：

标签： java eclipse hsqldb sql-insert


【解决方案1】：

以上述方式生成的 sql 语句可以包含科学记数法，如下所示：

insert into T1(xxx) values(4.0E-16);

UCanAccess 无法识别这种数字格式。 您应该使用带有参数值的准备好的语句或正确格式化双精度值（例如使用 DecimalFormat）。

【讨论】：

  • 我没有意识到这可能是问题所在，但是我用这段代码尝试了你所说的： DecimalFormat df = new DecimalFormat("#.#####");这是输出： INSERT INTO Markov(IdIndicador, FechaDesde, FechaHasta, Pv, Pa, Pr, Pn) VALUES(1,#2000-08-08#,#2010-08-08#,0,50177,0, 49822,0,00002,0.0) 出于某种该死的原因，输出中的小数分隔符从点更改为逗号甚至很难我明确地将其设置为格式，所以现在抛出的异常表明存在列错误计数，这是正确的，因为逗号是列分隔符。
  • 我终于修好了，就像jamadei所说的科学记数法。分隔符问题与语言环境有关，我在这篇帖子stackoverflow.com/questions/2282356/… 之后修复了它，谢谢大家的帮助。我真的很感激。
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