驱动未支持uint1/uint2/uint4/uint8

dolphin插件文档

https://docs.opengauss.org/zh/docs/5.0.0/docs/ExtensionReference/dolphin-%E6%95%B0%E5%80%BC%E7%B1%BB%E5%9E%8B.html

如果框架根据getColumnType进行数据get，会导致getType转换。 需要在驱动层和MySQL保持一致

```
        PreparedStatement pre = con.prepareStatement("select * from public.t1");
        ResultSet rs = pre.executeQuery();
        ResultSetMetaData rsMd = rs.getMetaData();
        for (int r = 1; r <= rsMd.getColumnCount() ; r++) {
            System.out.println("getColumnName       : "+rsMd.getColumnName(r));
            System.out.println("getColumnType       : "+rsMd.getColumnType(r));
            System.out.println("getColumnTypeName   : "+rsMd.getColumnTypeName(r));
            System.out.println("getColumnDisplaySize: "+rsMd.getColumnDisplaySize(r));
            System.out.println("getPrecision        : "+rsMd.getPrecision(r));
            System.out.println("getScale            : "+rsMd.getScale(r));
        }
        while (rs.next()) {
            System.out.println("getBigDecimal : "+rs.getBigDecimal(1));
            System.out.println("getLong       : "+rs.getLong(1));
//            System.out.println("getInt        : "+rs.getInt(1));
            System.out.println("getObject     : "+rs.getObject(1));
            System.out.println("getString     : "+rs.getString(1));
//            System.out.println("getBigDecimal : "+rs.getBigDecimal(2));
//            System.out.println("getLong       : "+rs.getLong(2));
//            System.out.println("getInt        : "+rs.getInt(2));
//            System.out.println("getObject     : "+rs.getObject(2));
//            System.out.println("getString     : "+rs.getString(2));
//            System.out.println("getBigDecimal : "+rs.getBigDecimal(3));
//            System.out.println("getLong       : "+rs.getLong(3));
//            System.out.println("getInt        : "+rs.getInt(3));
//            System.out.println("getObject     : "+rs.getObject(3));
//            System.out.println("getString     : "+rs.getString(3));
        }
```

![输入图片说明](https://foruda.gitee.com/images/1693280242695523194/afa79d78_1603209.png "屏幕截图")

mysql integer Unsigned

```
getColumnName       : id
getColumnType       : -5
getColumnTypeName   : BIGINT
getColumnDisplaySize: 19
getPrecision        : 19
getScale            : 0
getColumnName       : id2
getColumnType       : -5
getColumnTypeName   : BIGINT
getColumnDisplaySize: 19
getPrecision        : 19
getScale            : 0
```

openGauss/openGauss-connector-jdbc

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