SQLServerException Invalid column name - sql-server

Question

I have a problem that doesn't appear always, but it do it most of the times. In my huge java forecast class I have some ResultSets, and when I execute the routine I get:
com.microsoft.sqlserver.jdbc.SQLServerException: El nombre de columna DistanciaMision no es vßlido.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:170)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.findColumn(SQLServerResultSet.java:626)
at com.microsoft.sqlserver.jdbc.SQLServerResultSet.getString(SQLServerResultSet.java:2301)
at es.csic.iiia.udt.itim.iInformation.WebData.Forecast.etaMSR(Forecast.java:1109)
at es.csic.iiia.udt.itim.iInformation.WebData.Forecast.phase2(Forecast.java:662)
at es.csic.iiia.udt.itim.iInformation.WebData.Forecast.setData(Forecast.java:166)
at es.csic.iiia.udt.itim.iInformation.WebData.Forecast.main(Forecast.java:81)
at es.csic.iiia.udt.itim.iInformation.WebData.Forecast.execute(Forecast.java:71)
at org.quartz.core.JobRunShell.run(JobRunShell.java:199)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:546)
The column exists, so I don't know what is the problem...
The code line is this one:
Float distancia_restante = (float) ( Integer.parseInt(rs.getString("DistanciaMision")) - (myodometer - initialodometer));
The same problem appears on other columns but it usually crash here.
Thank you!
Edit: ok, this is the whole method:
private static void etaMSR() throws Exception, SQLException {
/**
*
* Calculem ETAN MSR - Mision - Seguimiento - Restricciones conductor
*
*
**/
System.out
.print("Get data from iTIM forecast&forecastAUX DDBB ....... ");
myStatement = MSSQLServerAccess.connection();
// Distancia mision, ruta, hora mision anterior, hora
rs = getTable("SELECT dbo.WebForecast.IdConductor, dbo.WebForecast.IdMision, dbo.WebForecast.IdMisionAnterior, dbo.WebForecast.DistanciaMision, "
+ " WebForecast_1.HoraIniMis AS himanterior, dbo.WebForecast.HoraFiMis AS hfmactual, WebForecast_1.Ciudad AS CiudadOrigen,"
+ " dbo.WebForecast.Ciudad AS CiudadDestino, dbo.Distancias.Ruta, dbo.WebForecast.HoraDistancia AS HoraDistancia"
+ " FROM dbo.WebForecast AS WebForecast_1 INNER JOIN"
+ " dbo.Distancias ON WebForecast_1.Ciudad = dbo.Distancias.Origen RIGHT OUTER JOIN"
+ " dbo.WebForecast ON WebForecast_1.IdMision = dbo.WebForecast.IdMisionAnterior AND dbo.Distancias.Destino = dbo.WebForecast.Ciudad"
+ " WHERE (dbo.WebForecast.IdConductor <> '') AND (CONVERT(datetime, '"
+ df.format(fechaDia)
+ "') <= dbo.WebForecast.HoraFiMis) "
+ " AND WebForecast_1.HoraIniMis <= CONVERT(datetime, '"
+ df.format(fechaDia) + "') ");
System.out.println("[ok]");
while (rs.next() && (rs.getString("IdConductor") != "") && org.apache.commons.lang.StringUtils.isNumeric(rs.getString("IdConductor"))) {
int initialodometer = 0;
String start = null;
if (rs.getString("HoraDistancia") != null) {
start = rs.getString("HoraDistancia");
}
if (rs.getString("himanterior") != null) {
start = rs.getString("himanterior");
}
if (start != null) {
ResultSet myrs = null;
Timestamp tobjetivo = rs.getTimestamp("himanterior");
long boundtime = 7200000; // 3600000 = 60m = 1h
Timestamp tini = (Timestamp) rs.getTimestamp("himanterior")
.clone();
Timestamp tfin = (Timestamp) rs.getTimestamp("himanterior")
.clone();
tini.setTime(tini.getTime() - boundtime);
tfin.setTime(tfin.getTime() + boundtime);
int contador = 0;
long bestdiff = 0;
myStatement = MSSQLServerAccess.connection();
myrs = getTable("SELECT DISTINCT Odometer, DT "
+ "FROM DriverEvents "
+ "WHERE (DT BETWEEN CONVERT(datetime, '"
+ df.format(tini) + "') " + "AND CONVERT(datetime, '"
+ df.format(tfin) + "')) " + "AND (CardId = '"
+ Integer.parseInt(rs.getString("IdConductor")) + "')");
int j = 0;
while (!myrs.next() && (j < 20)) {
// En caso de no encontrar en las 2h antes y despues nada:
tini.setTime(tini.getTime() - boundtime);
tfin.setTime(tfin.getTime() + boundtime);
myrs.close();
myStatement = MSSQLServerAccess.connection();
myrs = getTable("SELECT DISTINCT Odometer, DT "
+ "FROM DriverEvents "
+ "WHERE (DT BETWEEN CONVERT(datetime, '"
+ df.format(tini) + "') "
+ "AND CONVERT(datetime, '" + df.format(tfin)
+ "')) " + "AND (CardId = '"
+ Integer.parseInt(rs.getString("IdConductor"))
+ "')");
j++;
}
if (myrs.next()) {
initialodometer = myrs.getInt("Odometer");
bestdiff = Math.abs(tobjetivo.getTime()
- myrs.getTimestamp("DT").getTime());
contador++;
while (myrs.next()) {
long pretendiente = Math.abs(tobjetivo.getTime()
- myrs.getTimestamp("DT").getTime());
if (pretendiente <= bestdiff) {
bestdiff = pretendiente;
initialodometer = myrs.getInt("Odometer");
}
contador++;
}
}
myrs.close();
}
// Get Odometer distance at the moment
if (!rs.getString("IdConductor").isEmpty() && !rs.getString("IdConductor").equals("") ) {
ResultSet myrs = null;
int myodometer = 0;
myStatement = MSSQLServerAccess.connection();
myrs = getTable("SELECT MAX(DT) AS DT, MAX(Odometer) AS Odometer"
+ " FROM dbo.DriverEvents"
+ " WHERE (CardId = '"
+ Integer.parseInt(rs.getString("IdConductor"))
+ "') AND (DT > CONVERT(datetime, '"
+ df.format(fechaDatos) + "')) ");
if (myrs.next()) {
myodometer = myrs.getInt("Odometer");
if (initialodometer == 0)
initialodometer = myodometer;
Float distancia_restante = (float) ( Integer.parseInt(rs.getString("DistanciaMision")) - (myodometer - initialodometer));
if (distancia_restante < 0)
distancia_restante = (float) 0;
Timestamp ETAN = null;
Calendar cal = Calendar.getInstance();
if (rs.getTimestamp("himanterior") != null && rs.getTimestamp("himanterior").toString() != "") {
cal.setTimeInMillis(rs.getTimestamp("himanterior")
.getTime());
if (cal.after(Calendar.getInstance())) {
cal.setTimeInMillis(rs.getTimestamp("himanterior")
.getTime());
}
if (cal.before(Calendar.getInstance())) {
cal = Calendar.getInstance();
}
} else {
if (rs.getTimestamp("HoraDistancia") != null)
cal.setTimeInMillis(rs
.getTimestamp("HoraDistancia").getTime());
}
myStatement = MSSQLServerAccess.connection();
rs2 = getTable("SELECT TOP (100) PERCENT CardId, DT"
+ " FROM dbo.DriverEvents"
+ " GROUP BY CardId, DT"
+ " HAVING (CardId = '"
+ Integer.parseInt(rs.getString("IdConductor"))
+ "') AND (DT > CONVERT(datetime, '"
+ df.format(fechaDatos) + "'))");
if (rs2.next()) {
ETAN = getETAN(rs, distancia_restante, cal);
} else {
ETAN = getETA(rs, distancia_restante, cal, 1);
Statement myStatement2 = MSSQLServerAccess.connection();
myStatement2.executeUpdate("UPDATE WebForecast "
+ "SET ETAmsr = '" + df.format(ETAN)
+ "', KmsDiff = '" + distancia_restante.intValue()
+ "' " + "WHERE IdMision = '"
+ rs.getString("IdMision") + "'");
} else {
}
}
}
rs.close();
}
And the statement, maybe i'm doing something wrong?:
private static Statement conStatement(Properties properties){
String driverName = "com.microsoft.sqlserver.jdbc.SQLServerDriver"; // Load the JDBC driver
String dbURL = "jdbc:sqlserver://"
+ properties.getProperty("qualcomm.action.JDBC.MSSQLServerAccess.ddbbserverIP")
+ ";DatabaseName="
+ properties.getProperty("qualcomm.action.JDBC.MSSQLServerAccess.ddbbName")
+ ";SelectMethod=Cursor;"; // Connect to a server and database
String userName = properties.getProperty("qualcomm.action.JDBC.MSSQLServerAccess.userName");
String userPwd = properties.getProperty("qualcomm.action.JDBC.MSSQLServerAccess.userPwd");
Connection dbConn;
try {
Class.forName(driverName);
dbConn = DriverManager.getConnection(dbURL, userName, userPwd);
//log.info("Connection Successful!");
Statement myst = dbConn.createStatement();
return myst;
} catch (Exception e) {
log.error(e);
System.out.println(e);
return null;
}
}
Thanks guys :) Could be something wrong with the statement?

Answer 1

remember that Java is case-sensitive and so can be your table on SQL depending on the way you created them, actually depending on the collation on your DB. If your database is created with a Case Sensitive collation then all object names will be Case Sensitive.
try to check the exact columns name of the column on SQL and access it using [] and the exact case