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。