SQL50 将employees表中的所有员工的last_name和first_name通过引号连接起来
描述
将employees表中的所有员工的last_name和first_name通过(')连接起来。(sqlite不支持concat，请用||实现，mysql支持concat)
CREATE TABLE `employees` (
`emp_no` int(11) NOT NULL,
`birth_date` date NOT NULL,
`first_name` varchar(14) NOT NULL,
`last_name` varchar(16) NOT NULL,
`gender` char(1) NOT NULL,
`hire_date` date NOT NULL,
PRIMARY KEY (`emp_no`));
输出格式:
CREATE TABLE `employees` (
`emp_no` int(11) NOT NULL,
`birth_date` date NOT NULL,
`first_name` varchar(14) NOT NULL,
`last_name` varchar(16) NOT NULL,
`gender` char(1) NOT NULL,
`hire_date` date NOT NULL,
PRIMARY KEY (`emp_no`));
输出格式:
| name |
|---|
| Facello'Georgi |
| Simmel'Bezalel |
| Bamford'Parto |
| Koblick'Chirstian |
| Maliniak'Kyoichi |
| Preusig'Anneke |
| Zielinski'Tzvetan |
| Kalloufi'Saniya |
| Peac'Sumant |
| Piveteau'Duangkaew |
| Sluis'Mary |
SELECT CONCAT(RTrim(last_name),"'",LTrim(first_name)) AS name
FROM employees;