我正在尝试将数据从 Oracle 迁移到 SQL。
我已经创建了表名和字段名。
两者的类型和大小相同：例如
- 在 Oracle 上
Varchar2(11)，在 SQL 上VARCHAR(11) - 在 Oracle 上
Date，在 SQL 上datetime2(0)。
在我的应用程序中，我正在使用SqlBulkCopy函数。但是我在提交日期时遇到了上述错误。
private void Processing(string sPath)
{
string AppPath = Application.StartupPath.ToString();
IniFile myIni = new IniFile(sPath);
string allTable = myIni.IniReadValue("TABLENAME", "TABLE");
string[] alltables = allTable.Split(',');
foreach (var tableName in alltables)
{
string whereSqlQuery = string.Empty;
string sOrderBySqlQuery = string.Empty;
string sSQLSelect = string.Empty;
string sRCount = string.Empty;
whereSqlQuery = myIni.IniReadValue(tableName, "WHERE");
TableName = tableName;
sOrderBySqlQuery = myIni.IniReadValue(tableName, "ORDERBY");
sSQLSelect = myIni.IniReadValue(tableName, "SQLSELECT");
//sRCount = myIni.IniReadValue(tableName, "RCOUNT");
if (radAuto.Checked == true)
ConnectAndQuery(tableName, whereSqlQuery, sOrderBySqlQuery, sSQLSelect, sRCount);
else
ConnectAndQuery(tableName, whereSqlQuery, sOrderBySqlQuery);
}
}
private void ConnectAndQuery(string strTableName, string strWhere, string strOrderBy, string sSqlSelect, string sRcount)
{
Cursor.Current = Cursors.WaitCursor;
string connectionString = GetConnectionString();
// Using
OracleConnection connection = new OracleConnection();
SqlConnection oConn = default(SqlConnection);
DataTable dtSQL = null;
DateTime dtLog = DateTime.Now;
try
{
//Opening Oracle DB Connection
connection.ConnectionString = connectionString;
connection.Open();
ShownLog(string.Format("Table = {0} , -- STARTING --", strTableName));
ShownLog("Oracle Connection Opened, OK");
OracleCommand command = connection.CreateCommand();
if (!string.IsNullOrEmpty(strWhere))
SqlQuery = "SELECT * FROM " + strTableName + " WHERE "+ strWhere;
else
SqlQuery = string.Format("SELECT * FROM {0} ", strTableName);
if (!string.IsNullOrEmpty(strOrderBy))
SqlQuery += " ORDER BY " + strOrderBy;
command.CommandText = SqlQuery;
System.DateTime startTime = System.DateTime.Now;
ShownLog("Starting Date Time : " + startTime);
DataTable dtTotalInsertCount = new DataTable(strTableName);
if (!string.IsNullOrEmpty(sRcount))
{
//OracleDataAdapter adpCount = new OracleDataAdapter(sRcount, connectionString);
////adpCount.FillSchema(dtTotalInsertCount, SchemaType.Source);
//adpCount.Fill(dtTotalInsertCount);
}
OracleDataAdapter adapter = new OracleDataAdapter(SqlQuery, connectionString);
DataTable dt = new DataTable(strTableName);
adapter.FillSchema(dt, SchemaType.Source);
bool valid = true;
bool bCheck = true;
int count = 1000;
int start = 0;
string sLogQuery = SqlQuery.Replace("'", "");
dtLog = DateTime.Now;
//Insert to SQL Log Table
Insert(strTableName, dtLog, sLogQuery);
int iLogCount = 0;
int iActualCount = 0;
do
{
int iEnd = 0;
adapter.Fill(start, count, dt);
valid = dt.Rows.Count > 0 ? true : false;
if (valid)
{
iLogCount += dt.Rows.Count;
iEnd = start + dt.Rows.Count;
ShownLog("No of data Rows retrieved from Oracle, Count = " + dt.Rows.Count);
//Create the SQL Server Table
oConn = new SqlConnection(txtDestinationConnString.Text);
oConn.Open();
ShownLog("SQL Connection Opened, OK");
if (string.IsNullOrEmpty(sSqlSelect))
bCheck = false;
if (bCheck)
{
ShownLog("Data Comparision Start : " + System.DateTime.Now);
//If SQL Select Statement has
if (!string.IsNullOrEmpty(sSqlSelect))
{
SqlCommand cmd = new SqlCommand();
cmd.CommandText = sSqlSelect;
cmd.Connection = oConn;
cmd.CommandType = CommandType.Text;
SqlDataReader reader = cmd.ExecuteReader();
dtSQL = new DataTable();
dtSQL.Load(reader);
cmd = null;
reader = null;
//Return record has more than 0
ShownLog("Start Duplicate Checking : " + System.DateTime.Now);
if (dtSQL.Rows.Count > 0)
{
foreach (DataRow dr in dtSQL.Rows)
{
DataRow[] result;
if (strTableName == "ITK_STAFF" || strTableName == "ITK_FLIGHT")
{
result = dt.Select("URNO='" + dr[0].ToString() + "'");
}
else
result = dt.Select("URNO=" + dr[0]);
if (result.Length > 0)
{
foreach (var drRemove in result)
{
dt.Rows.Remove(drRemove);
}
}
}
}
ShownLog("End Duplicate Checking : " + System.DateTime.Now);
}
ShownLog("Actual No.s of records to insert : " + dt.Rows.Count);
if (dt.Rows.Count == count)
bCheck = false;
ShownLog("Data Comparision End : " + System.DateTime.Now);
}
if (valid)
{
ShownLog(System.DateTime.Now + " Copying " + strTableName + " From : " + start.ToString() + " To : " + iEnd);
}
start += count;
if (dt.Rows.Count > 0)
{
iActualCount += dt.Rows.Count;
CopyData(dt, oConn);
dt.Rows.Clear();
}
oConn.Close();
oConn = null;
}
} while (valid);
System.DateTime endTime = System.DateTime.Now;
ShownLog("Ending DateTime: " + endTime);
//msgOut("No of rows copied from oracle to SQL Server , Count = " + dt.Rows.Count);
TimeSpan diffTime = endTime.Subtract(startTime);
ShownLog(String.Format("Time Difference is Days : {0}, Hours : {1}, Minites : {2}, seconds : {3} ,Milliseconds : {4}", diffTime.Days, diffTime.Hours, diffTime.Minutes, diffTime.Seconds, diffTime.Milliseconds));
ShownLog(string.Format("Table = {0} , -- FINISHED --", strTableName));
ShownLog(string.Empty);
Update(iLogCount, iActualCount, strTableName, dtLog, sLogQuery, " ", true);
Cursor.Current = Cursors.Default;
}
catch (Exception ex)
{
Cursor.Current = Cursors.Default;
ShownLog(ex.ToString());
ShownLog(string.Empty);
Update(0, 0, strTableName, dtLog, "", ex.ToString(), false);
((IDisposable)connection).Dispose();
if (oConn != null)
oConn.Close();
RadioButtonControl();
}
finally
{
Cursor.Current = Cursors.Default;
((IDisposable)connection).Dispose();
if (oConn != null)
oConn.Close();
RadioButtonControl();
}
}
private void CopyData(DataTable sourceTable, SqlConnection destConnection)
{
// Using
SqlBulkCopy s = new SqlBulkCopy(destConnection);
try
{
s.DestinationTableName = TableName;
s.NotifyAfter = 10000;
s.SqlRowsCopied += new SqlRowsCopiedEventHandler(s_SqlRowsCopied);
s.WriteToServer(sourceTable);
s.Close();
}
finally
{
((IDisposable)s).Dispose();
}
}