Question

hi i am using oracle db. getting in the following statements.”ORA-00936: missing expression”

string sqlquery = ("select parent from tn2 where CONNECT BY PRIOR child=" + node);
        string connectionString = "Data Source=(DESCRIPTION=(ADDRESS_LIST=(ADDRESS=(PROTOCOL=TCP)(HOST=10.60.212.62)(PORT=1521)))(CONNECT_DATA=(SID=orcl)));User Id=apex_demo;Password=apex_demo;";
        OracleConnection con = new OracleConnection(connectionString);
        con.Open();
        OracleDataAdapter adapter = new OracleDataAdapter(sqlquery, con);
        adapter.Fill(objDT1);
        con.Close();

Answer 1

Remove the semicolon at the end of the SQL statement. It is not allowed when executing SQL statements from .NET.
Also, the where is invalid here, because you don’t provide a condition. The CONNECT BY PRIOR is no where condition but a construct on its own. See here for more info on how to use CONNECT BY PRIOR.