3.9 序列中所有集合成员的交集
有各个国家的语言人口占比表，其部分数据如下：
| CountryCode | Language | Percentage |
|---|---|---|
| England | English | 90% |
| America | English | 70% |
| Canada | English | 60% |
| Russia | English | 10% |
| France | English | 5% |
| England | French | 3% |
| America | French | 3% |
| Canada | French | 30% |
| Russia | French | 3% |
| France | French | 95% |
| England | Spanish | 1% |
| America | Spanish | 20% |
| Canada | Spanish | 1% |
| Russia | Spanish | 0.01% |
| France | Spanish | 0.05% |
请列出英语人口、法语人口、西班牙语人口分别超过 0.3%、0.2%、0.1% 的国家代码。
脚本：
| A | |
|---|---|
| 1 | =connect(“mysql”) |
| 2 | [English,French,Spanish] |
| 3 | [0.3,0.2,0.1] |
| 4 | =A2.(A1.query@i(“select countrycode from world.countrylanguage where language=? and percentage>?”,~,A3(#))) |
| 5 | >A1.close() |
| 6 | =A4.isect() |
A4 按次序依次查询英语人口超 0.3%、法语人口超 0.2%、西班牙语超 0.1% 的国家代码，并转成序列。query() 函数的 @i 选项表示当选出结果只有一列时，直接返回成序列
A5 A4 中所有序列交集
