--1:无ORDER BY排序的写法.(效率最高)--(经过测试,此方法成本最低,只嵌套一层,速度最快!即使查询的数据量再大,也几乎不受影响,速度依然!) SELECT * FROM (SELECT ROWNUM AS rowno, t.* FROM emp t WHERE hire_date BETWEEN TO_DATE ('20060501', 'yyyymmdd') AND TO_DATE ('20060731', 'yyyymmdd') ) table_alias ; --2:有ORD
--1:无ORDER BY排序的写法.(效率最高)--(经过测试,此方法成本最低,只嵌套一层,速度最快!即使查询的数据量再大,也几乎不受影响,速度依然!) SELECT * FROM (SELECT ROWNUM AS rowno, t.* FROM emp t WHERE hire_date BETWEEN TO_DATE ('20060501', 'yyyymmdd') AND TO_DATE ('20060731', 'yyyymmdd') AND ROWNUM <= 20) table_
--1:无ORDER BY排序的写法.(效率最高) --(经过测试,此方法成本最低,只嵌套一层,速度最快!即使查询的数据量再大,也几乎不受影响,速度依然!) SELECT * FROM (SELECT ROWNUM AS rowno, t.* FROM emp t WHERE hire_date BETWEEN TO_DATE ('20060501', 'yyyymmdd') AND TO_DAT
先查下数据表的总条数: SELECT COUNT(id) FROM ts_translation_send_address 执行分页界SQL 查看使用时间2.210s SELECT * FROM ts_translation_send_address ORDER BY id LIMIT 2000000,10; 把sql语句优化后查询 SELECT * from ts_translation_send_address t INNER JOIN ( SELECT ID FROM ts_transla
SELECT * FROM ( SELECT T.*, ROWNUMBER() OVER() AS ROWNUM FROM ( SELECT L4_GDS_GROUP_CD CODE, L4_GDS_GROUP_DESC NAME FROM DM_GDS_GROUP_INF_TD WHERE (L4_GDS_GROUP_CD LIKE '%手工制作%' OR L4_GDS_GROUP_DESC LIKE '%手工制作%')
select * from (select row_number() over() as rown,tpag.* from(SELECT int(COALESCE(列名1,0)),COALESCE(列名2,chr(0)),COALESCE(列名3,chr(0)),COALESCE(列名4,0), COALESCE(列名5,0),COALESCE(列名6,0) FROM 表名 where 列名7=条件 and 列名8=1 and 列名9=0 or
1. select * from ( select t.*, rownum RN from TABLE_NAME t ) where RN > 0 and RN <= 15 2. select * from ( select t.*, rownum RN from TABLE_NAME t ) where RN between 1 and 15
使用存储过程实现分页查询,SQL语句如下: USE [DatebaseName] --数据库名 GO /****** Object: StoredProcedure [dbo].[Pagination] Script Date: 03/30/2019 10:36:52 ******/ SET ANSI_NULLS ON GO SET QUOTED_IDENTIFIER ON GO Create PROCEDURE [dbo].[Pagination] ( @SqlTable varchar(10
orcale分页查询sql语句: SELECT * FROM ( SELECT A.*, ROWNUM RN FROM (SELECT * FROM TABLE_NAME) A WHERE ROWNUM <= 页数*每次查询量 ) WHERE RN > (页数-1)*每次查询量 mysql分页查询sql:SELECT a FROM 表名 WHERE name='bobo' LIMIT (页数-1)*每次查询量,页数*每次查询量;
1. Page package com.sm.model; import java.util.List; public class Page<T> { public static final int DEFAULT_PAGE_SIZE = 20; protected int pageNo = 1; // 当前页, 默觉得第1页 protected int pageSize = DEFAULT_PAGE_SIZE; // 每页记录数 protected long totalRecord = -1
Orcle分页查询SQL sql = SELECT T.* FROM (SELECT X.*, ROWNUM AS RN FROM (SELECT * FROM +表名) X WHERE ROWNUM <= (2*5)) T WHERE T.RN > (1*5); 标椎示例: SELECT T.* FROM (SELECT X.*, ROWNUM AS RN FROM (SELECT * FROM DEPT) X WHERE ROWNUM <= (2