【简答题】语句SELECT CONCAT('-', 'abc');的执行结果是
【判断题】SELECT 'Abc'='abc'的结果是1。
【单选题】语句SELECT CONCAT('-', 'abc'), CONCAT_WS('-',abc,xyz);的执行结果是
【简答题】A study of a university in Shanghai had found that many of the students there are using a quote(引语)from the Italian poet Dante as a kind of motto.The study of Fudan University, one of China’s top univ...
【简答题】select 'Abc'='abc';的结果为_____。
【判断题】select 'Abc' = 'ABC', 'good''good' select 'studio' like 'stdi_' , 3 && 1, 0 or 1
【单选题】select ltrim('abc','a') from dual;的结果是( )。
【单选题】Employers have found that many young competitors have the basic and best _______ for success and they are intelligent, creative, and hard-working.
【单选题】如果a表原本是空表,请问执行下列语句后,以下哪个表述正确( )。 insert into a values(1,'abc','1'); insert into a values(2,'abc','2'); create table b as select * from a; rollback;
【简答题】用格雷戈里公式求 的近似值。请报告一下代码中pi变量中第四次值(包括0那次))。 #include #include int main(void) { int denominator, flag; double item, pi; flag = 1; denominator = 1; item = 1.0; pi = 0; while(fabs (item) >= 0.0001) { item...