Custom aggregation function in Sqlite

Question

Is it possible (and how) to make custom aggregation in SQLite? I need to transform query which normally returns rows like

aaa | 12 | ...
bbb | 45 | ...

but should return now something like

aaa=12, bbb=45 | ...

ie to "aggregate" rows with some custom concatenation. So, is it possible even to concatenate columns of rows?

Answer 1

我想你想要group_concat() ：

select group_concat(col1 || '=' || col2, ', ')