未优化之前：

SELECT TMP.* FROM (SELECT ROWNUM AS "ROWNO",${tableId},${columnName}
            FROM ${tableName}) TMP
            WHERE
                TMP.ROWNO <= #{end}
                AND TMP.ROWNO >= #{start}

优化之后：

SELECT T1.${tableId},T1.${columnName}
FROM ${tableName} T1,(SELECT RID
                       FROM (SELECT
                               ROWNUM RN,T.RID
                             FROM (SELECT
                                     ROWID RID
                                   FROM ${tableName}
                                  ) T
                             WHERE ROWNUM <= #{END})
                       WHERE RN > #{START}) T2
WHERE T1.ROWID = T2.RID

性能：懒得算了，单纯通过观察，第一条SQL查询耗时30s以上的很多，第二条几乎都维持在300ms，起步就相差几十倍到一百倍，数据越多，相差越大，几百倍或更多应该也会发生。