在MySQL中，你可以这样做:values (1,2)， (3,4);

mysql> values (1,2), (3, 4);
+---+---+
| 1 | 2 |
+---+---+
| 1 | 2 |
| 3 | 4 |
+---+---+
2 rows in set (0.004 sec)

在MySQL 8中，也可以给列命名:

mysql> SELECT * FROM (SELECT 1, 2, 3, 4) AS dt (a, b, c, d);
+---+---+---+---+
| a | b | c | d |
+---+---+---+---+
| 1 | 2 | 3 | 4 |
+---+---+---+---+

下面的裸值命令为我在PostgreSQL工作:

VALUES (1,2,3), (4,5,6), (7,8,9)

DB2的一个选项:

SELECT 101 AS C1, 102 AS C2 FROM SYSIBM.SYSDUMMY1 UNION ALL
SELECT 201 AS C1, 202 AS C2 FROM SYSIBM.SYSDUMMY1 UNION ALL
SELECT 301 AS C1, 302 AS C2 FROM SYSIBM.SYSDUMMY1

SELECT * 
FROM DUAL 
CONNECT BY ROWNUM <= 9;

Oracle。 感谢这篇文章PL/SQL -在Where in子句中使用“List”变量

我把我的示例语句放在一起，以便轻松地手动输入值(测试人员在测试应用程序时重用):

WITH prods AS (
    SELECT column_value AS prods_code 
    FROM TABLE(
        sys.odcivarchar2list(
            'prod1', 
            'prod2'
        )
    )
)
SELECT * FROM prods

在PostgreSQL中，你可以做:

SELECT  *
FROM    (
        VALUES
        (1, 2),
        (3, 4)
        ) AS q (col1, col2)

在其他系统中，只需使用UNION ALL:

SELECT  1 AS col1, 2 AS col2
-- FROM    dual
-- uncomment the line above if in Oracle
UNION ALL
SELECT  3 AS col1, 3 AS col2
-- FROM    dual
-- uncomment the line above if in Oracle

在Oracle, SQL Server和PostgreSQL中，您还可以生成任意行数的记录集(可通过外部变量提供):

SELECT  level
FROM    dual
CONNECT BY
        level <= :n

在Oracle中,

WITH    q (l) AS
        (
        SELECT  1
        UNION ALL
        SELECT  l + 1
        FROM    q
        WHERE   l < @n
        )
SELECT  l
FROM    q
-- OPTION (MAXRECURSION 0)
-- uncomment line above if @n >= 100

在SQL Server中，

SELECT  l
FROM    generate_series(1, $n) l

在PostgreSQL。