在sql server 2000中调用系统时间
select getdate()
是显示当前系统时间，输出的日期格式与本机日期格式有关，假入你想在什么情况下都显示成2006-12-15 10:37:00这种形式则需要转换一下
select convert(varchar(30),getdate(),20)
显示是星期几的语句是
select datename(weekday,getdate())
日期加星期的话直接加在一块就可以了
select convert(varchar(30),getdate(),20)+' ,'+select datename(weekday,getdate())
相关文档：
set autotrace off
set autotrace on
set autotrace traceonly
set autotrace on explain
set autotrace on statistics
set autotrace on explain statistics
set autotrace traceonly explain
set ......
分页语句
sqlserver 方案1: select top 10 * from t where id not in(select top 30 id from t order by id) order by id
方案2： select top 10 * from t where id in (select top 40 id from t order by id)oder by id desc
mysql: select * from t order by id limit 30,10
oracle: select * from (select rownu ......
father表 son表
fid fname sid sname fid height money
1 a 100 s1 1 1.7 7000
2 b 101 s2 2 1.6 8000
3 c 102&nbs ......
先把程序打开,菜单上 Environment/Examples/Performance Examples 在空白处输入
要执行的程序,注意一定要正确,否则后果很严重,呵呵.
data: itab type table of TRDIR with header line.
select * from TRDIR into table itab
where NAME = 'ZHRRPT1011'.
read table itab with key name = 'ZHRRPT1011'.
......
