ResultSets and streaming columns

If the underlying object is itself an OutputStream class, getBinaryStream returns the object directly.

To get a field from the ResultSet using streaming columns, you can use the getXXXStream methods if the type supports it. See Streamable JDBC Data Types for a list of types that support the various streams. (See also Mapping of java.sql.Types to SQL Types.)

You can retrieve data from one of the supported data type columns as a stream, whether or not it was stored as a stream.

The following example shows how a user can retrieve a LONG VARCHAR column as a stream:
// retrieve data as a stream
ResultSet rs = s.executeQuery("SELECT b FROM atable");
while ( {
    // use a to get the data ip = rs.getAsciiStream(1);
    // process the stream--this is just a generic way to
    // print the data
    int c;
    int columnSize = 0;
    byte[] buff = new byte[128];
    for (;;) {
        int size =;
        if (size == -1)
        columnSize += size;
        String chunk = new String(buff, 0, size);