试试oracle中的connect by子句，就像这样

select level,level+1,level+2 from dual connect by level <=3;

有关connect by子句的更多信息，请参见此链接:已删除URL，因为oraclebin站点现在是恶意的。

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。

SELECT 1, 2, 3
UNION ALL SELECT 4, 5, 6
UNION ALL SELECT 7, 8, 9

下面是我如何使用一个简洁的XML技巧在Oracle 10+中填充静态数据。

create table prop
(ID NUMBER,
 NAME varchar2(10),
 VAL varchar2(10),
 CREATED timestamp,
 CONSTRAINT PK_PROP PRIMARY KEY(ID)
);

merge into Prop p
using (
select 
  extractValue(value(r), '/R/ID') ID,
  extractValue(value(r), '/R/NAME') NAME,
  extractValue(value(r), '/R/VAL') VAL
from
(select xmltype('
<ROWSET>
   <R><ID>1</ID><NAME>key1</NAME><VAL>value1</VAL></R>
   <R><ID>2</ID><NAME>key2</NAME><VAL>value2</VAL></R>
   <R><ID>3</ID><NAME>key3</NAME><VAL>value3</VAL></R>
</ROWSET>
') xml from dual) input,
 table(xmlsequence(input.xml.extract('/ROWSET/R'))) r
) p_new
on (p.ID = p_new.ID)
when not matched then
insert
(ID, NAME, VAL, CREATED)
values
( p_new.ID, p_new.NAME, p_new.VAL, SYSTIMESTAMP );

merge只插入原始表中缺少的行，这很方便 如果您想重新运行插入脚本。

在Oracle SQL中，您可以使用JSON_TABLE从JSON创建表:

SELECT
   t.emp_name,
   t.emp_age
FROM
   JSON_TABLE (
   '{
     "employees": [{name:"Alice", age: 19}, {name: "Bob", age: 23}]
  }',
  '$'
  COLUMNS (
     NESTED PATH '$.employees[*]'
     COLUMNS (
        emp_name VARCHAR2(50) PATH '$.name',
        emp_age NUMBER(3,0) PATH '$.age'
     )
  )
) t;

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 |
+---+---+---+---+