怎么把"select * from p_xiao where x_time between '{$dx}' and '{$jg}'"和下面这句结合成一句话select * from p_xiao where x_shou like '%".$lb."%' order by x_time desc

select count(*) from 怎么使用 select * from user_info where user_name in (select user_name from user)怎么改写提高效率谢谢了. 怎么把select * from p_xiao where x_time between '{$dx}' and '{$jg}'和下面这句结合成一句话select * from p_xiao where x_shou like '%.$lb.%' order by x_time desc select * from book limit , spring中select * from student,和select * from [数据库名].[dbo].[student],怎么别人用前者可以,我不能 sql做查询的时候,怎么把decimal类型的数据保留两位小数、?select agreeprice from product 这样查询时候能转换吗,请高手指教, select * from a union select * from b 能详细说下么 select from 表 和select from [表]有什么不同? select count(1) from emp select * into dept2 from dept select * from order where clientNo in (select distinct(clientNo) from orders ) 转化为HQL怎么写?order是表名 clientNo是其中一个列名!怎么转换成HQL, select count(c) from (select b from TUserBankLogSum b group by b.tid) as c 这条hql是错的按照这个意思应该怎么写 HQL 的语法：select a from a where a=3 or select b from b whereb=2 要怎么写? select * from table_a a,table_b b where a.col1 = b.col1(+) ;最后的(+)怎么解释? p_ _ tu_ _ 怎么填? 1' union select * from [ADM] union select * 在SQL语句 双引号,单引号连用怎么理解,StrSql=select * from usersheet where loginname='+Login1.UserName+' and userpass='+Login1.PassWord +' 就谈下边的这个例子把'+Login1.UserName+' 这个里边的单双引号怎么解释 oracle 中select into是什么意思把一个表里面的内容复制到另一个吗 还是别的 是不是还要先创建一个表啊create table aaa as select * from bbb 这样的效果 用select into 能做到么?