SELECT * FROM table1 WHERE id IN (SELECT id FROM table2 WHERE condition) UNION SELECT * FROM table1 WHERE id IN (SELECT id FROM table3 WHERE condition); -- 推荐 SELECT * FROM table1 WHERE EXISTS (SELECT 1 FROM table2 WHERE table1.id = table2.id AND condition) OR EXISTS (SELECT ...
Each year, the members of a book club select novels and nonfiction books to read. The club meets 3 times to discuss each novel and 5 times to discuss each nonfiction book they select. Last year, the club met 52 times and discussed 12 books. How many novels did the club discuss last ...
Can I EXECUTE a SQL Server Stored Procedure with Parameters and store the result set to a CTE Table so that I can then UNION to it Can I find out the "Listener" name through a SQL Server Query Can i give a rollup an Alias? Can I have a conditional JOIN? Can I have a primary k...
I think this is the most importantreasonthattable tennis is famous in China. 5 can和could在表示能力这个意义上的区别如下: (1)表示现在的能力,用can: (2)表示将来的能力,通常不用can或could,而用be able to的将来时态:但是,若表示现在决定将来是否有能力做某事,则可用can: (3)表示过去的能力,有时可用...
initial Books table to the Inline view "Sales". This inline view captures associated book sales information using the ISBN to join to the Books table. As a result, the inline view provides the result set with additional columns (the number of items sold and the company that sold the books...
select the word from the text which has the following meaning ___ means an official public proclamation or order issued by an authority
15.Select “Insert” from the “Edit” menu. 16.Application 1 (A1) selects rows from a single table in a cursor. 应用程序1 (A 1)在一个游标内从单独一个表选择行。 17.He only drinks select wines. 18.While she is waiting for a clerk, she selects several things she wants. 她一边...
If the select table has no rows, no data will be returned. The select table is optional. If it is not specified, only one row of data will be returned. Sample select statements without FROM clause: SELECT 'Hello world!'; SELECT 'Apple', 'Orange'; SELECT CHAR_LENGTH('Hello world!'...
All the students felt e-books could improve their reading ability. A. 正确 B. 错误 查看完整题目与答案 中国船舶工业总公司行业推荐标准的标准号是哪个? A. CB/Z B. CB* C. CB D. CB/T 查看完整题目与答案 执行XLAT换码指令时,要将表的首地址和偏移地址分别存放在( )寄存器一般。...
Wolf | Moving to the Chateau | AnyPublisher 2020 | Richard Roe | Fiction | 1 | Alejandro Rosalez | Long Summer | SomePublisher 2020 | Richard Roe | Fiction | 2 | Arnav Desai | The Key | Example Books 2020 | Richard Roe | Fiction | 3 | Mateo Jackson | Inside the Whale | ...