✅ – Can anyone help with better-sqlite3's `aggregate` method to read more than one row?
Can anyone help with better-sqlite3's
aggregate
method to read more than one row?Solution:
I'm using better-sqlite3 and I want to use its
aggregate
method but I need to have access to 2 rows, not just 1, in the aggregate step function. This is the code that works ```js
filter(predicate) {
this.#db.aggregate('filter', {
start: [],
step: (accumulator, currentValue) => {...Solution
ME
<Maddie> [Evie.Codes][She/Her]•37d ago
I'm using better-sqlite3 and I want to use its
aggregate
method but I need to have access to 2 rows, not just 1, in the aggregate step function. This is the code that works
But I need too add a second row, key
. I don't know how. I tried to do .prepare('SELECT filter(key, value) FROM mytable')
but that tells me wrong number of arguments to function filter()
. I tried SELECT filter(key), filter(value) from mytable
and that runs the function twice, not once, with the key then the value and that's obviously not what I want.
Any idea on how I can get both values at once in the step
?ME
<Maddie> [Evie.Codes][She/Her]•36d ago
Got an answer from the better-sqlite3 author, so I'll stick it here for posterity, just in case anyone else ever searches archives! This is for another method but it's simpler, so easier to look at:
There we go 🙂 Hope it helps someone else in the future.
UU
Unknown User•36d ago