jodd-db/src/main/java/jodd/db/DbQueryBase.java
public Q setFetchSize(final int rows) {
		checkNotClosed();
		this.fetchSize = rows;
		if (statement != null) {
			try {
				statement.setFetchSize(fetchSize);
			} catch (SQLException sex) {
				throw new DbSqlException(this, "Unable to set fetch size: " + fetchSize, sex);
			}
		}
		return _this();
	}
public Q setFetchSize(final int rows) {
		checkNotClosed();
		this.fetchSize = rows;
		if (statement != null) {
			try {
				statement.setFetchSize(fetchSize);
			} catch (SQLException sex) {
				throw new DbSqlException(this, "Unable to set fetch size: " + fetchSize, sex);
			}
		}
		return _this();
	}
Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when
more rows are needed. The number of rows specified affects only result sets created using this statement.
If the value specified is zero, then the hint is ignored. The default value is zero.
@see Statement#setFetchSize(int)