html_url,issue_url,id,node_id,user,user_label,created_at,updated_at,author_association,body,reactions,issue,issue_label,performed_via_github_app
https://github.com/simonw/sqlite-utils/issues/50#issuecomment-515752204,https://api.github.com/repos/simonw/sqlite-utils/issues/50,515752204,MDEyOklzc3VlQ29tbWVudDUxNTc1MjIwNA==,9599,simonw,2019-07-28T10:48:14Z,2019-07-28T10:48:14Z,OWNER,"Here's the diff where I tried to use `.executemany()` and ran into the `lastrowid` problem:
```diff
diff --git a/sqlite_utils/db.py b/sqlite_utils/db.py
index ef55976..7f85759 100644
--- a/sqlite_utils/db.py
+++ b/sqlite_utils/db.py
@@ -881,13 +881,10 @@ class Table:
                 or_what=or_what,
                 table=self.name,
                 columns="", "".join(""[{}]"".format(c) for c in all_columns),
-                rows="", "".join(
-                    """"""
+                rows=""""""
                     ({placeholders})
                 """""".format(
-                        placeholders="", "".join([""?""] * len(all_columns))
-                    )
-                    for record in chunk
+                    placeholders="", "".join([""?""] * len(all_columns))
                 ),
             )
             values = []
@@ -902,15 +899,15 @@ class Table:
                         extract_table = extracts[key]
                         value = self.db[extract_table].lookup({""value"": value})
                     record_values.append(value)
-                values.extend(record_values)
+                values.append(record_values)
             with self.db.conn:
                 try:
-                    result = self.db.conn.execute(sql, values)
+                    result = self.db.conn.executemany(sql, values)
                 except sqlite3.OperationalError as e:
                     if alter and ("" has no column "" in e.args[0]):
                         # Attempt to add any missing columns, then try again
                         self.add_missing_columns(chunk)
-                        result = self.db.conn.execute(sql, values)
+                        result = self.db.conn.executemany(sql, values)
                     else:
                         raise
                 self.last_rowid = result.lastrowid
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",473083260,"""Too many SQL variables"" on large inserts",
https://github.com/simonw/sqlite-utils/issues/50#issuecomment-515752129,https://api.github.com/repos/simonw/sqlite-utils/issues/50,515752129,MDEyOklzc3VlQ29tbWVudDUxNTc1MjEyOQ==,9599,simonw,2019-07-28T10:46:49Z,2019-07-28T10:46:49Z,OWNER,"The problem with `.executemany()` is it breaks `lastrowid`:

> This read-only attribute provides the rowid of the last modified row. It is only set if you issued an INSERT or a REPLACE statement using the execute() method. For operations other than INSERT or REPLACE or when executemany() is called, lastrowid is set to None.

So I think I need to continue to use my existing way of executing bulk inserts (with a giant repeated `INSERT INTO ... VALUES` block) but ensure that I calculate the chunk size such that I don't ever try to pass more than 999 values at once.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",473083260,"""Too many SQL variables"" on large inserts",
https://github.com/simonw/sqlite-utils/issues/50#issuecomment-515751719,https://api.github.com/repos/simonw/sqlite-utils/issues/50,515751719,MDEyOklzc3VlQ29tbWVudDUxNTc1MTcxOQ==,9599,simonw,2019-07-28T10:40:11Z,2019-07-28T10:40:11Z,OWNER,"I think the fix here is for me to switch to using `executemany()` - example from the Python docs: https://docs.python.org/3/library/sqlite3.html
```python
purchases = [('2006-03-28', 'BUY', 'IBM', 1000, 45.00),
             ('2006-04-05', 'BUY', 'MSFT', 1000, 72.00),
             ('2006-04-06', 'SELL', 'IBM', 500, 53.00),
            ]
c.executemany('INSERT INTO stocks VALUES (?,?,?,?,?)', purchases)
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",473083260,"""Too many SQL variables"" on large inserts",