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
1082651698,I_kwDOCGYnMM5Ah_Qy,358,Support for CHECK constraints,11597658,open,0,,,7,2021-12-16T21:19:45Z,2022-09-25T07:15:59Z,,NONE,,"Hi,

I noticed the `transform.table()` method doesn't have an option to add/change or drop a check constraint (see https://sqlite.org/lang_createtable.html -> 3.7 Check Constraints. would be great to have this as an option! 
",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/358/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,
1236693079,I_kwDOCGYnMM5JtnBX,432,"Support `rows_where()`, `delete_where()` etc for attached alias databases",11597658,open,0,,,5,2022-05-16T06:38:58Z,2022-06-14T22:16:48Z,,NONE,,"Hi,

I noticed `rows_where()` doesn't return any rows from tables which are from attached databases. The `exists()` function returns false. As far as I can see this is because the `table_names()` function only looks for table names in the current database and not in attached (or temp) databases.

Besides, `rows_where()`, also `insert_all()` and `delete_where()` didn't do what I was expecting because of this. For the moment I've patched `table_names()` for myself, see below but I'm not sure what the total impact is on the other functions like lookup truncate etc which all use `exists()`. Also `view_names()` doesn't look for views in attached or temp databases. 
```python
 def table_names(self, fts4: bool = False, fts5: bool = False) -> List[str]:
        ""A list of string table names in this database.""
        where = [""type = 'table'""]
        if fts4:
            where.append(""sql like '%USING FTS4%'"")
        if fts5:
            where.append(""sql like '%USING FTS5%'"")
        dbs = [x[1] for x in self.execute('pragma database_list').fetchall()]    
        lst=[]
        for db in dbs:    
            sql = ""select name from {} where {}"".format(db+"".sqlite_master"","" AND "".join(where))
            lst.extend(r[0] for r in self.execute(sql).fetchall())
        return lst
```",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/432/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,