摘要： The most frequently used wildcard is the percent sign (%). Within a search string, % means match any number of occurrences of any character. For example, to find all products that start with the wor... 阅读全文

摘要： SELECT prod_name, prod_price FROM Products WHERE vend_id = 'DLL01' OR vend_id = 'BRS01' AND prod_price >= 10; prod_name prod_price ------------------- ---------- Fish bean ba... 阅读全文