數(shù)據(jù)庫(kù)分頁(yè)怎么實(shí)現(xiàn) 怎樣實(shí)現(xiàn)數(shù)據(jù)庫(kù)的分頁(yè)查詢?
怎樣實(shí)現(xiàn)數(shù)據(jù)庫(kù)的分頁(yè)查詢?針對(duì)查詢語(yǔ)句做處理,同時(shí)對(duì)請(qǐng)求頁(yè)面地址做分析list.aspx?pageid=5 //表示訪問(wèn)第五頁(yè)后臺(tái)語(yǔ)言里,先對(duì)查詢條件做預(yù)處理pagepre=pagesize*4
怎樣實(shí)現(xiàn)數(shù)據(jù)庫(kù)的分頁(yè)查詢?
針對(duì)查詢語(yǔ)句做處理,同時(shí)對(duì)請(qǐng)求頁(yè)面地址做分析list.aspx?pageid=5 //表示訪問(wèn)第五頁(yè)后臺(tái)語(yǔ)言里,先對(duì)查詢條件做預(yù)處理pagepre=pagesize*4 //pagesize 用于表示分頁(yè)大小,例如10,則前4頁(yè)共有40條記錄查詢語(yǔ)句sqlcmd="select top " pagesize " from tabelname where id not in (select top " pagepre " from tablename order by id desc)"操作原理為將當(dāng)前頁(yè)前顯示的所有記錄從數(shù)據(jù)查詢結(jié)果中排除,也就是not in 后面的部分,然后從剩余的結(jié)果沖,讀取pagesize大小的記錄值。篩選條件、排序條件放在子查詢中