我正在尝试使用JDBC从Java中删除表中的数据。首先计算行数以确保表不为空,然后截断数据。
以下是我使用的代码:
Class.forName("com.microsoft.sqlserver.jdbc.SQLServerDriver");
Connection con = DriverManager.getConnection("jdbc:sqlserver://m-i:1433;databaseName=Tes", "sa", "Password");
Statement cnnt= con.createStatement();
Statement del1 = con.createStatement();
ResultSet rs = cnnt.executeQuery("Select count(lea) AS cnt from dbo.Link");
int count= 0;
if(rs.next())
{
count = rs.getInt("cnt");
}
System.out.println(count);
if(count != 0)
{
del1.executeQuery("Truncate Table dbo.Link");
}
else
{
System.out.println("Table is already empty");
}
错误:
Exception in thread "main" com.microsoft.sqlserver.jdbc.SQLServerException: The statement did not return a result set.
at com.microsoft.sqlserver.jdbc.SQLServerException.makeFromDriverError(SQLServerException.java:190)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.doExecuteStatement(SQLServerStatement.java:800)
at com.microsoft.sqlserver.jdbc.SQLServerStatement$StmtExecCmd.doExecute(SQLServerStatement.java:689)
at com.microsoft.sqlserver.jdbc.TDSCommand.execute(IOBuffer.java:5696)
at com.microsoft.sqlserver.jdbc.SQLServerConnection.executeCommand(SQLServerConnection.java:1715)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeCommand(SQLServerStatement.java:180)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeStatement(SQLServerStatement.java:155)
at com.microsoft.sqlserver.jdbc.SQLServerStatement.executeQuery(SQLServerStatement.java:616)
错误出现在截断表 dbo.Link 上。
我这样做是正确的吗?
可以有人帮我吗?谢谢。