id,node_id,number,title,user,state,locked,assignee,milestone,comments,created_at,updated_at,closed_at,author_association,pull_request,body,repo,type,active_lock_reason,performed_via_github_app,reactions,draft,state_reason
1868713944,I_kwDOCGYnMM5vYk_Y,588,`table.get(column=value)` option for retrieving things not by their primary key,9599,open,0,,,1,2023-08-28T00:41:23Z,2023-08-28T00:41:54Z,,OWNER,,"This came up working on this feature:
- https://github.com/simonw/llm/pull/186

I have a table with this schema:
```sql
CREATE TABLE [collections] (
   [id] INTEGER PRIMARY KEY,
   [name] TEXT,
   [model] TEXT
);
CREATE UNIQUE INDEX [idx_collections_name]
    ON [collections] ([name]);
```
So the primary key is an integer (because it's going to have a huge number of rows foreign key related to it, and I don't want to store a larger text value thousands of times), but there is a unique constraint on the `name` - that would be the primary key column if not for all of those foreign keys.

Problem is, fetching the collection by name is actually pretty inconvenient.

Fetch by numeric ID:

```python
try:
    table[""collections""].get(1)
except NotFoundError:
    # It doesn't exist
```
Fetching by name:
```python
def get_collection(db, collection):
    rows = db[""collections""].rows_where(""name = ?"", [collection])
    try:
        return next(rows)
    except StopIteration:
        raise NotFoundError(""Collection not found: {}"".format(collection))
```
It would be neat if, for columns where we know that we should always get 0 or one result, we could do this instead:
```python
try:
    collection = table[""collections""].get(name=""entries"")
except NotFoundError:
    # It doesn't exist
```
The existing `.get()` method doesn't have any non-positional arguments, so using `**kwargs` like that should work:

https://github.com/simonw/sqlite-utils/blob/1260bdc7bfe31c36c272572c6389125f8de6ef71/sqlite_utils/db.py#L1495",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/588/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,