我有以下 Oracle 存储过程:
PROCEDURE SP_ITEMEXISTS(pID IN NUMBER, pExists OUT CHAR) IS
BEGIN
select CASE count(*) WHEN 0 THEN 'N' ELSE 'Y' END into pExists from items where id = pID;
END SP_ITEMEXISTS;
我使用 ODP.NET 从 Enterprise Library 6.0 调用它,代码如下:
public bool ItemExists(int itemID)
{
string procedureName = "SP_ItemExists";
var database = new DatabaseProviderFactory().CreateDefault();
bool returnValue = false;
using (OracleCommand command = (OracleCommand)database.GetStoredProcCommand(procedureName))
{
command.Parameters.Add("pID", OracleDbType.Int32, itemID, ParameterDirection.Input);
OracleParameter pExists = command.Parameters.Add("pExists", OracleDbType.Char, ParameterDirection.Output);
database.ExecuteNonQuery(command);
if (pExists.Value.ToString().ToUpper() == "Y")
returnValue = true;
else
returnValue = false;
}
return returnValue;
}
我收到以下错误:ORA-06502: PL/SQL: numeric or value error
从 Oracle SQL Developer 调用存储过程有效。