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
1701018909,I_kwDOCGYnMM5lY30d,543,Tests broken on Windows due to new convert() lambda names,9599,closed,0,,,0,2023-05-08T22:11:29Z,2023-05-08T22:19:04Z,2023-05-08T22:19:04Z,OWNER,,"https://github.com/simonw/sqlite-utils/actions/runs/4920084038/jobs/8788501314
```python
sql = 'update [example] set [dt] = lambda_-9223371942137158589([dt]);'
```
From:
- #526",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/543/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed
1576990618,PR_kwDOCGYnMM5JkkED,526,Fix repeated calls to `Table.convert()`,167893,closed,0,,,0,2023-02-09T00:14:49Z,2023-05-08T21:56:05Z,2023-05-08T21:53:58Z,CONTRIBUTOR,simonw/sqlite-utils/pulls/526,"Fixes #525. All tests pass.

There's perhaps a better way to name lambdas? There could be a collision if a caller passes a function with name like `lambda_123456`.

SQLite [documentation](https://www.sqlite.org/appfunc.html) is a little, ah, lite on function name specs. If there is a character that can be used in place of underscore in a SQLite function name that is not permitted in a Python function identifier then that could be a good way to prevent accidental collisions. (I tried dash, colon, dot, no joy).

Otherwise, there is little chance of this happening and if it should happen the risk is mitigated by now throwing an exception in the case of a (name, arity) collision without `replace=True`.

<!-- readthedocs-preview sqlite-utils start -->
----
:books: Documentation preview :books:: https://sqlite-utils--526.org.readthedocs.build/en/526/

<!-- readthedocs-preview sqlite-utils end -->",140912432,pull,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/526/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",0,
1432377191,I_kwDOCGYnMM5VYFdn,509,`sqlite-utils transform` breaks DEFAULT string values and STRFTIME(),2199875,closed,0,,,0,2022-11-02T02:32:23Z,2023-05-08T21:13:38Z,2023-05-08T21:13:38Z,NONE,,"Very nice library! Our team found sqlite-utils through @simonw's [comment on the ""Simple declarative schema migration for SQLite"" article](https://news.ycombinator.com/item?id=31249823), and we were excited to use it, but unfortunately `sqlite-utils transform` seems to break our DB. 

Running `sqlite-utils transform` to modify a column mangles their DEFAULT values:

- Default string values are wrapped in extra single quotes
- Function expressions such as [`STRFTIME()`](https://www.sqlite.org/lang_datefunc.html) are turned into strings!

------

Here are steps to reproduce:

**Original database**

```
$ sqlite3 test.db << EOF
CREATE TABLE mytable (
    col1 TEXT DEFAULT 'foo',
    col2 TEXT DEFAULT (STRFTIME('%Y-%m-%d %H:%M:%f', 'NOW'))
)
EOF

$ sqlite3 test.db ""SELECT sql FROM sqlite_master WHERE name = 'mytable';""
CREATE TABLE mytable (
    col1 TEXT DEFAULT 'foo',
    col2 TEXT DEFAULT (STRFTIME('%Y-%m-%d %H:%M:%f', 'NOW'))
)
```

**Modified database after sqlite-utils**

```
$ sqlite3 test.db ""INSERT INTO mytable DEFAULT VALUES; SELECT * FROM mytable;""
foo|2022-11-02 02:26:58.038

$ sqlite-utils transform test.db mytable --rename col1 renamedcol1

$ sqlite3 test.db ""SELECT sql FROM sqlite_master WHERE name = 'mytable';""
CREATE TABLE ""mytable"" (
   [renamedcol1] TEXT DEFAULT '''foo''',
   [col2] TEXT DEFAULT 'STRFTIME(''%Y-%m-%d %H:%M:%f'', ''NOW'')'
)

$ sqlite3 test.db ""INSERT INTO mytable DEFAULT VALUES; SELECT * FROM mytable;""
foo|2022-11-02 02:26:58.038
'foo'|STRFTIME('%Y-%m-%d %H:%M:%f', 'NOW')
```

(Related: #336)",140912432,issue,,,"{""url"": ""https://api.github.com/repos/simonw/sqlite-utils/issues/509/reactions"", ""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",,completed