Maximilian Hoffman

`replaceCountStar` should also replace count(primary key) and unique indexes with only non-nullable columns

1

I think the count of a primary key and count of a unique index with all non-nullable columns should both equivalent to `count(*)`: ```sql create table xyz (x int primary...

[rowexec] custom rowexec

10

This PR adds custom Dolt execution operators for lookup joins. When building an execution plan, we try to replace `joinIter` with a Dolt equivalent that inlines the key building and...

enable key range iter

6

There was an issue merging https://github.com/dolthub/dolt/pull/8025 ontop of a revert. Enable the key iteration optimization.

Renaming the default branch (`call dolt_branch('-m', 'main', 'master');`) does not set the config `init.defaultbranch` branch param, making `DoltDatabaseProvider.defaultBranch` invalid for (1) the current session, (2) the engine + all subsequent...

When implementing `Range.KeyRangeLookup`, some of the tests panicked because `len(Range.Fields) != Range.Desc.Count()`. I worked around the problem but did not dig into why this is the case. It seems suspicious...

Dolt silently fails to load databases sometimes, for example permission reasons (example below). I would have preferred `dolt sql` (or anything that starts an engine) to at least warn me...

[stats] Use floats for stats counters, limit MCVs to distribution outliers

1

Three main changes: - stats use floats by default, to avoid uint->float round tripping - bucket MCVs are assumed to be sorted - MCVs are discarded if they are not...

Stats purge and prune

9

`call dolt_stats_prune()` should wipe the stats database disk contents, and replace with the currently tracked statistics. This is GC-like behavior. `call dolt_stats_purge()` should clear the stats database folder and reinitialize...

Exporting invalid CSV makes it hard to roundtrip import/exports. Small repro: ```bash dolt init dolt sql