📜  减甲骨文? - SQL 代码示例

📅  最后修改于: 2022-03-11 15:05:03.409000             🧑  作者: Mango

代码示例2
/*Using SUBSTR in Oracle (Example from hackerrank.com): */

/*Simple select query...*/ 
SELECT DISTINCT city 
FROM station 

/*Using WHERE and SUBSTR to find (distinct) cities in station table that begin 
as well as end with a vowel.*/ 
WHERE SUBSTR(city,1,1) IN ('A','E','I','O','U') 
    AND substr(city,-1) IN ('a','e','i','o','u'); 

/*Parameters for SUBSTR (Substring) in order are as follows: 
String, Start, Length.*/