JDBC DatabaseMetaData.getColumns() returns duplicate columns

Question

I\'m busy on a piece of code to get alle the column names of a table from an Oracle database. The code I came up with looks like this:

DriverManager.register         


        

Answer 1

This is the behavior mandated by the JDBC API - passing nulls as first and second parameter to getColumns means that neither catalog name nor schema name are used to narrow the search. Link to the documentation . It is true that some other JDBC drivers have different behavior by default (e.g MySQL's ConnectorJ by default restricts to the current catalog), but this is not standard, and documented as such