张玉龙
- 浏览: 722238 次
- 性别:
- 来自: 沈阳
-
最新评论
-
李科笠：
这款编辑器，能够保存从word中复制的图片么？
CKEditor3.x的介绍和使用 -
sybell：
讲得好，但得试一下有没有错。
Mysql 中获取刚插入的自增长id的值 -
zqb666kkk：
nice 很好的启发
spring的jdbcTemplate 返回值为list -
nizen：
不错，有用！
Mysql 中获取刚插入的自增长id的值 -
MEZboy：
真全面，感谢分享！
Radio单选框OnClick事件的设置[网络收集]
select DISTINCT o.*,g.type_id from es_goods g, es_order o , es_order_items i w
相关推荐
(select num from(select row_number() over(order by s_score desc) as num,s_id from Score where c_id=a.c_id)t where t.s_id=a.s_id)as '排名' from Score a group by a.c_id ,a.s_score, a.s_id )tt where...
有这样的一个需求：select count(distinct nick) from user_access_xx_xx; 这条sql用于统计用户访问的uv，由于单表的数据量在10G以上，即使在user_access_xx_xx上加上nick的索引， 通过查看执行计划，也为全索引扫描...
1.内连接: 符合连接条件的数据 被选中 不符合连接条件的数据被过滤掉。 等值连接 ... select distinct m.id,m.first_name from s_emp e,s_emp m where e.manager_id(+)= m.id and e.manager_id is null;
select distinct lower(all_c.table_name) table_name --,(case -- when column_id || to_char(column_id) -- when column_id < 100 then to_char(column_id) -- when column_id > 100 then 'H' || substrb(to...
SELECT DISTINCT g.*， cp.name AS cp_name， c.name AS category_name， t.name AS type_name FROMgm_game g LEFT JOIN gm_cp cp ON cp.id = g.cp_id AND cp.deleted = 0 LEFT JOIN gm_category c ON c.id = g....
- SELECT DISTINCT surname FROM personnels ORDER BY surname DESC 插入 ======================== - INSERT INTO myArray (name,surname) VALUES ( Tufan , YILDIRIM ) - INSERT INTO myArray.subitems ( known_...
FROM (SELECT uid FROM nodes UNION ALL SELECT uid FROM ways) e; 1051 5.前十位贡献者数量 SELECT e.user, COUNT(*) as num FROM (SELECT user FROM nodes UNION ALL SELECT user FROM ways) e GROUP BY e.user ...
com.kingdee.bos.util.backport.concurrent.locks Interfaces and classes providing a framework for locking and waiting for conditions that is distinct from built-in synchronization and monitors....
014.sql高级查询_去重distinct.mp4 015.sql高级查询_null操作.mp4 016.sql高级查询_in操作.mp4 017.sql高级查询_between-and操作.mp4 018.sql高级查询_like模糊查询.mp4 019.sql高级查询_集合运算.mp4 020.sql高级...
10、查询表索引状态，便于确认表索引是否可⽤ select I.TABLE_OWNER,I.TABLE_NAME,O.OBJECT_NAME,O.OBJECT_TYPE,O.STATUS FROM USER_INDEXES I,USER_OBJECTS O WHERE O.OBJE CT_NAME=I.INDEX_NAME AND O.STATUS='...
select constraint_name, constraint_type,search_condition, r_constraint_name from user_constraints where table_name = upper(\'&table_name\') select c.constraint_name,c.constraint_type,cc.column_name...
select resource_name,limit from dba_profiles where profile='DEFAULT' and resource_type='KERNEL'; select username,profile from dba_users; select * from dba_role_privs where granted_role= 'DBA'; select...
9. Don’t worry about the test: it’s nothing but... distinct 13. His enthusiasm was really _____, and now all of us are filled with anticipation. a. epidemic b. infective c. effective d. infectious
使用Distinct查询.rar使用Distinct查询.rar
SQL>select index_name,index_type,table_name from user_indexes order by table_name; 查看索引被索引的字段 SQL>select * from user_ind_columns where index_name=upper('&index_name'); 查看索引的大小 ...
-- 考虑乘车区间问题SELECT DISTINCT passenger.* FROM trainpass t, taketrainrecord, passen
SELECT DISTINCT "栏位名" FROM "表格名" SELECT DISTINCT store_name FROM Store_Information WHERE条件语句 SELECT "栏位名" FROM "表格名" WHERE "条件" SELECT store_name FROM Store_Information WHERE ...
select distinct Reader.* from Reader,Book,Borrow where PubComp='人民出版社' and Book.BID=Borrow.BID and Borrow.RID=Reader.RID go 4、查询没有借过书的读者信息 use Library select * from Reader,...
SQL SELECT DISTINCT 语句 SELECT DISTINCT 语句用于返回唯一不同的值。 SQL SELECT DISTINCT 语句 在表中，一个列可能会包含多个重复值，有时您也许希望仅仅列出不同（distinct）的值。 DISTINCT 关键词用于返回...
Oracle数据库日常检查 select a.tablespace_name tnm,a.... AND A.TABLESPACE_NAME IN (select distinct tablespace_name from dba_tablespaces) and trunc((a.bytes-c.bytes)*100/a.bytes,0) >=80 order by 4 desc;