toArray
语法
toArray(X)
参数
X 是表的列字段名称或包含列字段的计算表达式。
详情
与 group by 搭配使用，按照分组将 X 转换为数组向量（array vector）。
例子
t = table(1 1 3 4 as id, 1 3 5 6 as v1)
new_t = select toArray(v1) as newV1 from t group by id
/*
id newV1
-- -----
1 [1,3]
3 [5]
4 [6]
*/
new_t = select toArray(v1+1) as newV1 from t group by id
/*
id newV1
-- -----
1 [2,4]
3 [6]
4 [7]
*/