ORA-01722 running sql in C# 2.0, but works in Apex

Question

Hi,
I am using VS2005 with C# and .NET 2.0 and have an Oracle 10g XE database.
When I run the following query in Apex then it works:
SELECT PIT.TYPE_VALUE AS "Entity Type", PIT.PILE_ITEM_TYPE_ID, RAWTOHEX(PI.PILE_ITEM_VALUE) AS "Entity Value", COUNT(PI.PILE_ITEM_VALUE) AS "# Occurrences", COUNT(DISTINCT XF.IMAGE_ID) AS "# Images" FROM PILE_ITEM_TYPE PIT, PILE_ITEM PI, XFILE XF
WHERE PIT.PILE_ITEM_TYPE_ID = PI.PILE_ITEM_TYPE_ID AND PI.XFILE_ID = XF.XFILE_ID AND (PI.PILE_ITEM_TYPE_ID IN (1,3))
GROUP BY PIT.TYPE_VALUE, PIT.PILE_ITEM_TYPE_ID, RAWTOHEX(PI.PILE_ITEM_VALUE) ORDER BY "Entity Type"
I try and run the same query in my C# app by replacing PI.PILE_ITEM_TYPE_ID IN (1,3) with PI.PILE_ITEM_TYPE_ID IN (:selectedPileTypes), where selectedPileTypes is a string. If selectedPileTypes contains one number, then no problem. Otherwise I get the ORA-01722: invalid number error.
I had this working in a DataSet, but we had to remove it so we could bind and rebind our datagridviews at run-time. I tried to replicate the settings of the Fill method (parameter.DbType = AnsiString ), but it doesn't help. Below is the current code I'm running:
SummaryDataGridView.DataSource = currDB.GetHitSummariesData(selectedPileTypes);
public DataTable GetHitSummariesData(string selectedPileTypes)
DataTable table = new DataTable();
table.Locale = System.Globalization.CultureInfo.InvariantCulture;
OracleDataAdapter adapter = new OracleDataAdapter();
OracleParameter param1 = new OracleParameter();
param1.ParameterName = ":selectedPilesString";
param1.DbType = DbType.AnsiString;
param1.Value = selectedPileTypes;
param1.Direction = ParameterDirection.Input;
string commmandStr = "SELECT PIT.TYPE_VALUE AS \"Entity Type\", PIT.PILE_ITEM_TYPE_ID,"
+ " RAWTOHEX(PI.PILE_ITEM_VALUE) AS \"Entity Value\", COUNT(PI.PILE_ITEM_VALUE)"
+ " AS \"# Occurrences\", COUNT(DISTINCT XF.IMAGE_ID) AS \"# Images\""
+ " FROM PILE_ITEM_TYPE PIT, PILE_ITEM PI, XFILE XF"
+ " WHERE PIT.PILE_ITEM_TYPE_ID = PI.PILE_ITEM_TYPE_ID AND PI.XFILE_ID = XF.XFILE_ID AND"
+ " (PI.PILE_ITEM_TYPE_ID IN (:selectedPilesString))"
+ " GROUP BY PIT.TYPE_VALUE, PIT.PILE_ITEM_TYPE_ID, RAWTOHEX(PI.PILE_ITEM_VALUE)"
+ " ORDER BY \"Entity Type\"";
adapter.SelectCommand = new OracleCommand(commmandStr, currDBConn);
try
adapter.SelectCommand.Parameters.Add(param1);
adapter.Fill(table);
Has anybody run across a similar situation? Or can someone suggest something to try?
TIA,
Theresa

Answer 1

Hi Theresa,
I think it might be a bit unfair to say that the query works in APEX but not when using C# as there is a bit of a difference in the query in the two environments. In the APEX query you show, you are using literals whereas in the query to be submitted via the C# app you are using a single bind variable. If you want to pass multiple values in the "in" clause, you should use a separate bind for each one. Something like:
PI.PILE_ITEM_TYPE_ID IN (:1, :2, :3,...)
Basically you would just build up the query text and then create OracleParameter objects using the correct OracleDbType (to avoid type coercion/conversion), add the parameters to the OracleCommand.Parameters collection, and you should be OK.
Hope that helps a bit,
Mark