@Override
    public String toString() {
        if (null != table && null != column) {
            return String.format("database.table.column: '%s'.'%s'.'%s'", database, table, column);
        }
        if (null != table) {
            return String.format("database.table: '%s'.'%s'", database, table);
        }
        return String.format("database: '%s'", database);
    }
@Test
    void assertToStringForDatabaseIdentifier() {
        assertThat(new SQLExceptionIdentifier("foo_db").toString(), is("database: 'foo_db'"));
    }