三种分页的写法:
1.使用minus,原理就是查询出前100行的数据 减去 查询出前50行的数据
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select * from DATA_TABLE_SQL where rownum<=100 minus select * from DATAT_ABLE_SQL where rownum<=50 |
2.查询出所有数据的rownum,然后再选择50到100的数据(不推荐)
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select * from ( select t.*,rownum num from DATA_TABLE_SQL t) where num<=100 and num>50 |
3.限定范围100条数据,并查询出这100条的rownum,然后再选择50到100的数据
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select * from ( select t.*,rownum num from DATA_TABLE_SQL t where rownum<=100 ) where num>50 |
下面给大家拓展两个分页查询语句:
1:单表查询
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SELECT * FROM ( SELECT t.*,ROWNUM r FROM TABLE t WHERE ROWNUM <= pageNumber*pageSize) WHERE r >(pageNumber-1)*pageSize |
2:两张表联查
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SELECT * FROM ( SELECT ROWNUM RN,XX.* FROM ( SELECT 表名.字段名, 表名.字段名, 表名.字段名... FROM TABLE1 t1, TABLE2 t2 WHERE t1.字段=t2.字段) XX WHERE ROWNUM<=pageSize*pageNumber) WHERE RN >(pageNumber-1)*pageSize |