我的代码:
String sql = "select " + field + " from " + key;
Statement st = null;
ResultSet rs = null;
CachedRowSet crs;
ResultSetMetaData rsmd;
String[] fieldArray;
try {
st = conn.createStatement();
rs = st.executeQuery(sql); crs = new CachedRowSetImpl();
rsmd = rs.getMetaData();
crs.populate(rs);
我想计算RS 里面某一列数据的和 ,平均值 等!
解决方案 »
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