9 maria 6 27/04/2020 我有以下查询 select client_type from customers where date = sysdate grouptype_clients 6 我需要的是返回以下结果 type_clients
5,6 我已经尝试了以下几种方法 select listgg (client_type, ',') within group
我使用select语句从sqlplus中获取一条记录,该语句返回一行,但是当我在java中使用executeQuery()方法时,它不会在结果集中返回任何行。Class.forName("oracle.jdbc.driver.OracleDriver");
Connection con=DriverManager.getConnection("jdbc:oracle:thin:@LocalHost:1521:orcl","sys as sysdba",&quo
FROM e1.empl_date) AS YEAR, COUNT(e1.id_empl) AS EMPL_NUMBER GROUPYEAR FROM e1.empl_date) AS YEAR, COUNT(e1.id_empl) AS EMPL_NUMBER GROUPBY EXTRACT (YEAR FROM e1.empl_date));ORA-00937: not a sin