ora-01722

First of all I am using Oracle: Table One Name = tableone Table Two Name = tabletwo tableone has a column named pizzaone , tabletwo has a column named pizzatwo . I want to join tableone to tabletwo where pizzaone is somewhere in the pizzatwo 's name. What I tried: select * from tableone join tabletwo on tableone.pizzaone like ('%' + tabletwo.pizzatwo + '%') How can I correct this query? Try this syntax instead: select * from tableone join tabletwo on tableone.pizzaone like ('%' || tabletwo.pizzatwo || '%') Oracle's string concatenation operator is the double pipe (||). The invalid number error

Why the heck does Oracle offer a different(!) version of the JDBC driver, e.g. ojdbc14.jar, for every(!) database version? The files all have different sizes and thus probably different content. background: We get a random and seemingly irreproducible error saying "invalid number" when saving data (we guess it's the Timestamp). But it's not any particular statement. Most of the time, it saves just fine. Just once a month a harmless looking statement will fail. So i had a closer look at Oracle's download site and noticed that none of the filesizes match despite files sharing the same name. Our

I have a problem when inserting a string of numbers into sql query SELECT * FROM tablename a WHERE a.flokkurid IN (3857,3858,3863,3285) ORDER BY sjodategund, rodun ...or: SELECT * FROM tablename a WHERE a.flokkurid IN (:strManyNumbers) ORDER BY sjodategund, rodun ...with this code: using (OracleCommand sel = new OracleCommand(SQL, connectionstring)) { sel.Parameters.Add(":strManyNumbers", OracleDbType.Varchar2, "Client", ParameterDirection.Input); } So if i run this query i get: ORA-01722: invalid number but if i insert just one number, i.e. "3857" it will return query OK with data. To pass a