数据库的Primary表和Secondary表有相同的结构，其中W、H、D是主键。Primary表：
| Name | W | H | D |
| Primary item 1 | 100 | 500 | 300 |
| Primary item 2 | 100 | 600 | 300 |
| Primary item 3 | 200 | 500 | 300 |
| Primary item 4 | 100 | 500 | 300 |
| Primary item 5 | 100 | 600 | 300 |
| Primary item 6 | 200 | 500 | 300 |
Secondary表：
| Name | W | H | D |
| Secondary item 1 | 100 | 500 | 300 |
| Secondary item 2 | 100 | 600 | 300 |
| Secondary item 3 | 200 | 500 | 300 |
| Secondary item 4 | 100 | 500 | 300 |
| Secondary item 5 | 100 | 600 | 300 |
| Secondary item 6 | 200 | 500 | 300 |
要求从两张表中找出符合条件W=100,H=500,D=300的记录，先输出Primay里的一行，再输出相关联的Secondary的每一行。
| Name | W | H | D |
| Primary item 1 | 100 | 500 | 300 |
| Secondary item 1 | 100 | 500 | 300 |
| Secondary item 4 | 100 | 500 | 300 |
| Primary item 4 | 100 | 500 | 300 |
| Secondary item 1 | 100 | 500 | 300 |
| Secondary item 4 | 100 | 500 | 300 |
编写SPL代码：
| A |
| 1 | =sqlServer1.query("select * from Primary where W = 100 and H = 500 and D = 300") |
| 2 | =sqlServer1.query("select * from Secondary where W = 100 and H = 500 and D = 300") |
| 3 | =if(A2,A1.conj(~|A2)) |
A1、A2：执行简单SQL，条件查询。
A3：A2为空时返回空，A2不为空时，循环A1的每条记录 ~，合并 ~ 和 A2，最后再合并循环的结果。
