html_url,issue_url,id,node_id,user,created_at,updated_at,author_association,body,reactions,issue,performed_via_github_app
https://github.com/simonw/datasette/pull/1622#issuecomment-1028387529,https://api.github.com/repos/simonw/datasette/issues/1622,1028387529,IC_kwDOBm6k_c49S_LJ,22429695,2022-02-02T21:45:21Z,2022-02-02T21:45:21Z,NONE,"# [Codecov](https://codecov.io/gh/simonw/datasette/pull/1622?src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) Report
> Merging [#1622](https://codecov.io/gh/simonw/datasette/pull/1622?src=pr&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (fbaf317) into [main](https://codecov.io/gh/simonw/datasette/commit/8d5779acf0041cfd0db7f68f468419f9008b86ec?el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (8d5779a) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/simonw/datasette/pull/1622/graphs/tree.svg?width=650&height=150&src=pr&token=eSahVY7kw1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)](https://codecov.io/gh/simonw/datasette/pull/1622?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)

```diff
@@           Coverage Diff           @@
##             main    #1622   +/-   ##
=======================================
  Coverage   92.11%   92.11%           
=======================================
  Files          34       34           
  Lines        4525     4525           
=======================================
  Hits         4168     4168           
  Misses        357      357           
```



------

[Continue to review full report at Codecov](https://codecov.io/gh/simonw/datasette/pull/1622?src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/simonw/datasette/pull/1622?src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Last update [8d5779a...fbaf317](https://codecov.io/gh/simonw/datasette/pull/1622?src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison).
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1122414274,
https://github.com/simonw/datasette/pull/1626#issuecomment-1028423514,https://api.github.com/repos/simonw/datasette/issues/1626,1028423514,IC_kwDOBm6k_c49TH9a,22429695,2022-02-02T22:36:37Z,2022-02-02T22:39:52Z,NONE,"# [Codecov](https://codecov.io/gh/simonw/datasette/pull/1626?src=pr&el=h1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) Report
> Merging [#1626](https://codecov.io/gh/simonw/datasette/pull/1626?src=pr&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (4b4d0e1) into [main](https://codecov.io/gh/simonw/datasette/commit/b5e6b1a9e1332fca3effe45d55dd06ee4249f163?el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison) (b5e6b1a) will **not change** coverage.
> The diff coverage is `n/a`.

[![Impacted file tree graph](https://codecov.io/gh/simonw/datasette/pull/1626/graphs/tree.svg?width=650&height=150&src=pr&token=eSahVY7kw1&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)](https://codecov.io/gh/simonw/datasette/pull/1626?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)

```diff
@@           Coverage Diff           @@
##             main    #1626   +/-   ##
=======================================
  Coverage   92.16%   92.16%           
=======================================
  Files          34       34           
  Lines        4531     4531           
=======================================
  Hits         4176     4176           
  Misses        355      355           
```



------

[Continue to review full report at Codecov](https://codecov.io/gh/simonw/datasette/pull/1626?src=pr&el=continue&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison).
> **Legend** - [Click here to learn more](https://docs.codecov.io/docs/codecov-delta?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison)
> `Δ = absolute <relative> (impact)`, `ø = not affected`, `? = missing data`
> Powered by [Codecov](https://codecov.io/gh/simonw/datasette/pull/1626?src=pr&el=footer&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Last update [b5e6b1a...4b4d0e1](https://codecov.io/gh/simonw/datasette/pull/1626?src=pr&el=lastupdated&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison). Read the [comment docs](https://docs.codecov.io/docs/pull-request-comments?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Simon+Willison).
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1122451096,
https://github.com/simonw/datasette/issues/1623#issuecomment-1028389953,https://api.github.com/repos/simonw/datasette/issues/1623,1028389953,IC_kwDOBm6k_c49S_xB,9599,2022-02-02T21:48:34Z,2022-02-02T21:48:34Z,OWNER,"A few other pages do that too, including:
- https://latest.datasette.io/-/messages
- https://latest.datasette.io/-/allow-debug","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1122416919,
https://github.com/simonw/datasette/issues/1618#issuecomment-1027654979,https://api.github.com/repos/simonw/datasette/issues/1618,1027654979,IC_kwDOBm6k_c49QMVD,9599,2022-02-02T07:25:22Z,2022-02-02T07:25:22Z,OWNER,"But... I just noticed something I had missed in the docs for https://www.sqlite.org/pragma.html#pragfunc

> Table-valued functions exist only for PRAGMAs that return results and that have no side-effects.

So it's possible I'm being overly paranoid here after all: what I want to block here is people running things like `PRAGMA case_sensitive_like = 1` which could affect the global state for that connection and cause unexpected behaviour later on.

So maybe I should allow all pragma functions. I previously allowed an allow-list of them in:
- #761","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121121305,
https://github.com/simonw/datasette/issues/1533#issuecomment-1027672617,https://api.github.com/repos/simonw/datasette/issues/1533,1027672617,IC_kwDOBm6k_c49QQop,9599,2022-02-02T07:56:51Z,2022-02-02T07:56:51Z,OWNER,"Demos - these pages both have `<link rel=...` if you view source on them:

- https://latest.datasette.io/fixtures/sortable
- https://latest.datasette.io/fixtures/sortable/a,a

And you can hit them with `curl` like so:
```
% curl -I 'https://latest.datasette.io/fixtures/sortable'    
HTTP/1.1 200 OK
link: https://latest.datasette.io/fixtures/sortable.json; rel=""alternate""; type=""application/json+datasette""
cache-control: max-age=5
referrer-policy: no-referrer
access-control-allow-origin: *
access-control-allow-headers: Authorization
access-control-expose-headers: Link
content-type: text/html; charset=utf-8
x-databases: _memory, _internal, fixtures, extra_database
Date: Wed, 02 Feb 2022 07:56:17 GMT
Server: Google Frontend
Transfer-Encoding: chunked

% curl -I 'https://latest.datasette.io/fixtures/sortable/a,a'
HTTP/1.1 200 OK
link: https://latest.datasette.io/fixtures/sortable/a,a.json; rel=""alternate""; type=""application/json+datasette""
cache-control: max-age=5
referrer-policy: no-referrer
access-control-allow-origin: *
access-control-allow-headers: Authorization
access-control-expose-headers: Link
content-type: text/html; charset=utf-8
x-databases: _memory, _internal, fixtures, extra_database
Date: Wed, 02 Feb 2022 07:56:24 GMT
Server: Google Frontend
Transfer-Encoding: chunked
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1065431383,
https://github.com/simonw/datasette/issues/1533#issuecomment-1027669851,https://api.github.com/repos/simonw/datasette/issues/1533,1027669851,IC_kwDOBm6k_c49QP9b,9599,2022-02-02T07:51:57Z,2022-02-02T07:51:57Z,OWNER,"Documentation: https://docs.datasette.io/en/latest/json_api.html#discovering-the-json-for-a-page

https://docs.datasette.io/en/latest/json_api.html top `--cors` section mentions the new `Access-Control-Expose-Headers: Link` header.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1065431383,
https://github.com/simonw/datasette/pull/1616#issuecomment-1028414871,https://api.github.com/repos/simonw/datasette/issues/1616,1028414871,IC_kwDOBm6k_c49TF2X,9599,2022-02-02T22:23:45Z,2022-02-02T22:23:45Z,OWNER,First stable Black release!,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1119413338,
https://github.com/simonw/datasette/issues/1623#issuecomment-1028397935,https://api.github.com/repos/simonw/datasette/issues/1623,1028397935,IC_kwDOBm6k_c49TBtv,9599,2022-02-02T21:59:43Z,2022-02-02T21:59:43Z,OWNER,Here's the new test: https://github.com/simonw/datasette/blob/23a09b0f6af33c52acf8c1d9002fe475b42fee10/tests/test_html.py#L927-L936,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1122416919,
https://github.com/simonw/datasette/issues/1576#issuecomment-1027635925,https://api.github.com/repos/simonw/datasette/issues/1576,1027635925,IC_kwDOBm6k_c49QHrV,9599,2022-02-02T06:47:20Z,2022-02-02T06:47:20Z,OWNER,"Here's what I was hacking around with when I uncovered this problem:
```diff
diff --git a/datasette/views/table.py b/datasette/views/table.py
index 77fb285..8c57d08 100644
--- a/datasette/views/table.py
+++ b/datasette/views/table.py
@@ -1,3 +1,4 @@
+import asyncio
 import urllib
 import itertools
 import json
@@ -615,44 +616,37 @@ class TableView(RowTableShared):
         if request.args.get(""_timelimit""):
             extra_args[""custom_time_limit""] = int(request.args.get(""_timelimit""))
 
-        # Execute the main query!
-        results = await db.execute(sql, params, truncate=True, **extra_args)
-
-        # Calculate the total count for this query
-        filtered_table_rows_count = None
-        if (
-            not db.is_mutable
-            and self.ds.inspect_data
-            and count_sql == f""select count(*) from {table} ""
-        ):
-            # We can use a previously cached table row count
-            try:
-                filtered_table_rows_count = self.ds.inspect_data[database][""tables""][
-                    table
-                ][""count""]
-            except KeyError:
-                pass
-
-        # Otherwise run a select count(*) ...
-        if count_sql and filtered_table_rows_count is None and not nocount:
-            try:
-                count_rows = list(await db.execute(count_sql, from_sql_params))
-                filtered_table_rows_count = count_rows[0][0]
-            except QueryInterrupted:
-                pass
-
-        # Faceting
-        if not self.ds.setting(""allow_facet"") and any(
-            arg.startswith(""_facet"") for arg in request.args
-        ):
-            raise BadRequest(""_facet= is not allowed"")
+        async def execute_count():
+            # Calculate the total count for this query
+            filtered_table_rows_count = None
+            if (
+                not db.is_mutable
+                and self.ds.inspect_data
+                and count_sql == f""select count(*) from {table} ""
+            ):
+                # We can use a previously cached table row count
+                try:
+                    filtered_table_rows_count = self.ds.inspect_data[database][
+                        ""tables""
+                    ][table][""count""]
+                except KeyError:
+                    pass
+
+            if count_sql and filtered_table_rows_count is None and not nocount:
+                try:
+                    count_rows = list(await db.execute(count_sql, from_sql_params))
+                    filtered_table_rows_count = count_rows[0][0]
+                except QueryInterrupted:
+                    pass
+
+            return filtered_table_rows_count
+
+        filtered_table_rows_count = await execute_count()
 
         # pylint: disable=no-member
         facet_classes = list(
             itertools.chain.from_iterable(pm.hook.register_facet_classes())
         )
-        facet_results = {}
-        facets_timed_out = []
         facet_instances = []
         for klass in facet_classes:
             facet_instances.append(
@@ -668,33 +662,58 @@ class TableView(RowTableShared):
                 )
             )
 
-        if not nofacet:
-            for facet in facet_instances:
-                (
-                    instance_facet_results,
-                    instance_facets_timed_out,
-                ) = await facet.facet_results()
-                for facet_info in instance_facet_results:
-                    base_key = facet_info[""name""]
-                    key = base_key
-                    i = 1
-                    while key in facet_results:
-                        i += 1
-                        key = f""{base_key}_{i}""
-                    facet_results[key] = facet_info
-                facets_timed_out.extend(instance_facets_timed_out)
-
-        # Calculate suggested facets
-        suggested_facets = []
-        if (
-            self.ds.setting(""suggest_facets"")
-            and self.ds.setting(""allow_facet"")
-            and not _next
-            and not nofacet
-            and not nosuggest
-        ):
-            for facet in facet_instances:
-                suggested_facets.extend(await facet.suggest())
+        async def execute_suggested_facets():
+            # Calculate suggested facets
+            suggested_facets = []
+            if (
+                self.ds.setting(""suggest_facets"")
+                and self.ds.setting(""allow_facet"")
+                and not _next
+                and not nofacet
+                and not nosuggest
+            ):
+                for facet in facet_instances:
+                    suggested_facets.extend(await facet.suggest())
+            return suggested_facets
+
+        async def execute_facets():
+            facet_results = {}
+            facets_timed_out = []
+            if not self.ds.setting(""allow_facet"") and any(
+                arg.startswith(""_facet"") for arg in request.args
+            ):
+                raise BadRequest(""_facet= is not allowed"")
+
+            if not nofacet:
+                for facet in facet_instances:
+                    (
+                        instance_facet_results,
+                        instance_facets_timed_out,
+                    ) = await facet.facet_results()
+                    for facet_info in instance_facet_results:
+                        base_key = facet_info[""name""]
+                        key = base_key
+                        i = 1
+                        while key in facet_results:
+                            i += 1
+                            key = f""{base_key}_{i}""
+                        facet_results[key] = facet_info
+                    facets_timed_out.extend(instance_facets_timed_out)
+
+            return facet_results, facets_timed_out
+
+        # Execute the main query, facets and facet suggestions in parallel:
+        (
+            results,
+            suggested_facets,
+            (facet_results, facets_timed_out),
+        ) = await asyncio.gather(
+            db.execute(sql, params, truncate=True, **extra_args),
+            execute_suggested_facets(),
+            execute_facets(),
+        )
+
+        results = await db.execute(sql, params, truncate=True, **extra_args)
 
         # Figure out columns and rows for the query
         columns = [r[0] for r in results.description]
```
It's a hacky attempt at running some of the table page queries in parallel to see what happens.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1087181951,
https://github.com/simonw/datasette/issues/1618#issuecomment-1027656000,https://api.github.com/repos/simonw/datasette/issues/1618,1027656000,IC_kwDOBm6k_c49QMlA,9599,2022-02-02T07:27:14Z,2022-02-02T07:27:14Z,OWNER,"I also just realized that `pragma pragma_list` can be used to generate a list of all known pragmas for the connection:

    sqlite-utils fixtures.db 'pragma pragma_list' --fmt github

| name                      |
|---------------------------|
| analysis_limit            |
| application_id            |
| auto_vacuum               |
| automatic_index           |
| busy_timeout              |
| cache_size                |
| cache_spill               |
| case_sensitive_like       |
| cell_size_check           |
| checkpoint_fullfsync      |
| collation_list            |
| compile_options           |
| count_changes             |
| data_version              |
| database_list             |
| default_cache_size        |
| defer_foreign_keys        |
| empty_result_callbacks    |
| encoding                  |
| foreign_key_check         |
| foreign_key_list          |
| foreign_keys              |
| freelist_count            |
| full_column_names         |
| fullfsync                 |
| function_list             |
| hard_heap_limit           |
| ignore_check_constraints  |
| incremental_vacuum        |
| index_info                |
| index_list                |
| index_xinfo               |
| integrity_check           |
| journal_mode              |
| journal_size_limit        |
| legacy_alter_table        |
| lock_proxy_file           |
| locking_mode              |
| max_page_count            |
| mmap_size                 |
| module_list               |
| optimize                  |
| page_count                |
| page_size                 |
| pragma_list               |
| query_only                |
| quick_check               |
| read_uncommitted          |
| recursive_triggers        |
| reverse_unordered_selects |
| schema_version            |
| secure_delete             |
| short_column_names        |
| shrink_memory             |
| soft_heap_limit           |
| synchronous               |
| table_info                |
| table_list                |
| table_xinfo               |
| temp_store                |
| temp_store_directory      |
| threads                   |
| trusted_schema            |
| user_version              |
| wal_autocheckpoint        |
| wal_checkpoint            |
| writable_schema           |

So I could use that list to create a much more specific regular expression, which would then allow the word ""pragma"" to be used more freely while still protecting against any known pragma function being called.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121121305,
https://github.com/simonw/datasette/issues/1618#issuecomment-1027656518,https://api.github.com/repos/simonw/datasette/issues/1618,1027656518,IC_kwDOBm6k_c49QMtG,9599,2022-02-02T07:28:14Z,2022-02-02T07:31:30Z,OWNER,"I also need to consider if supposedly harmless side-effect free pragma functions could be used to work around the Datasette permissions system. My hunch is that wouldn't be a problem, because if you're allowing arbitrary SQL queries you're already letting people ignore the permissions system.

One example:
```
sqlite-utils fixtures.db 'pragma database_list' -t
  seq  name    file
-----  ------  ------------------------------------------------------
    0  main    /Users/simon/Dropbox/Development/datasette/fixtures.db
```
Though it looks like I already allow-listed that one in #761: https://latest.datasette.io/_memory?sql=select+*+from+pragma_database_list%28%29","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121121305,
https://github.com/simonw/datasette/issues/1620#issuecomment-1028374330,https://api.github.com/repos/simonw/datasette/issues/1620,1028374330,IC_kwDOBm6k_c49S786,9599,2022-02-02T21:28:16Z,2022-02-02T21:28:16Z,OWNER,I just realized I can refactor this to make it much simpler.,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121618041,
https://github.com/simonw/datasette/issues/1620#issuecomment-1028393259,https://api.github.com/repos/simonw/datasette/issues/1620,1028393259,IC_kwDOBm6k_c49TAkr,9599,2022-02-02T21:53:02Z,2022-02-02T21:53:02Z,OWNER,"I ran the following on https://www.google.com/ in the console to demonstrate that these work as intended:

```javascript
[
  ""https://latest.datasette.io/fixtures"",
  ""https://latest.datasette.io/fixtures?sql=select+1"",
  ""https://latest.datasette.io/fixtures/facetable""
].forEach(async (url) => {
  response = await fetch(url, {method: ""HEAD""});
  console.log(response.headers.get(""Link""));
});
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121618041,
https://github.com/simonw/datasette/issues/1618#issuecomment-1027659018,https://api.github.com/repos/simonw/datasette/issues/1618,1027659018,IC_kwDOBm6k_c49QNUK,9599,2022-02-02T07:32:47Z,2022-02-02T07:32:47Z,OWNER,"I was hoping that `explain select ...` might be able to easily spot when people are calling PRAGMA functions, but this output doesn't look very helpful:
```
% sqlite-utils fixtures.db 'explain select * from pragma_database_list()' -t
  addr  opcode         p1    p2    p3  p4                   p5  comment
------  -----------  ----  ----  ----  -----------------  ----  ---------
     0  Init            0    11     0                        0
     1  VOpen           0     0     0  vtab:7F9C90AC3070     0
     2  Integer         0     1     0                        0
     3  Integer         0     2     0                        0
     4  VFilter         0    10     1                        0
     5  VColumn         0     0     3                        0
     6  VColumn         0     1     4                        0
     7  VColumn         0     2     5                        0
     8  ResultRow       3     3     0                        0
     9  VNext           0     5     0                        0
    10  Halt            0     0     0                        0
    11  Transaction     0     0    35  0                     1
    12  Goto            0     1     0                        0
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121121305,
https://github.com/simonw/datasette/issues/1533#issuecomment-1027633686,https://api.github.com/repos/simonw/datasette/issues/1533,1027633686,IC_kwDOBm6k_c49QHIW,9599,2022-02-02T06:42:53Z,2022-02-02T06:42:53Z,OWNER,"I'm going to apply the hack, then fix it again in:
- #1518","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1065431383,
https://github.com/simonw/datasette/issues/1615#issuecomment-1027659890,https://api.github.com/repos/simonw/datasette/issues/1615,1027659890,IC_kwDOBm6k_c49QNhy,9599,2022-02-02T07:34:17Z,2022-02-02T07:34:17Z,OWNER,"I've been thinking about this a bunch too. If I build anything along these lines it will be as part of the Datasette Cloud hosted service I'm working on, maybe as a free tier.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1117132741,
https://github.com/simonw/datasette/issues/1534#issuecomment-1028461220,https://api.github.com/repos/simonw/datasette/issues/1534,1028461220,IC_kwDOBm6k_c49TRKk,9599,2022-02-02T23:39:33Z,2022-02-02T23:39:33Z,OWNER,"I've decided not to do this, because of the risk that Cloudflare could cache the JSON version for an HTML page or vice-versa.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1065432388,
https://github.com/simonw/datasette/issues/1624#issuecomment-1028396866,https://api.github.com/repos/simonw/datasette/issues/1624,1028396866,IC_kwDOBm6k_c49TBdC,9599,2022-02-02T21:58:06Z,2022-02-02T21:58:06Z,OWNER,"It looks like this is because `IndexView` extends `BaseView` rather than extending `DataView` which is where all that CORS stuff happens:

https://github.com/simonw/datasette/blob/23a09b0f6af33c52acf8c1d9002fe475b42fee10/datasette/views/index.py#L18-L21

Another thing I should address with the refactor project in:
- #878 ","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1122427321,
https://github.com/simonw/datasette/issues/1619#issuecomment-1027646659,https://api.github.com/repos/simonw/datasette/issues/1619,1027646659,IC_kwDOBm6k_c49QKTD,9599,2022-02-02T07:10:37Z,2022-02-02T07:10:37Z,OWNER,It's not just the table with slashes in the name. Same thing on http://127.0.0.1:3344/foo/bar/fixtures/attraction_characteristic/1 - the `json` link goes to a JSON-rendered 404 on http://127.0.0.1:3344/foo/bar/foo/bar/fixtures/attraction_characteristic/1.json,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121583414,
https://github.com/simonw/datasette/issues/1611#issuecomment-1027635175,https://api.github.com/repos/simonw/datasette/issues/1611,1027635175,IC_kwDOBm6k_c49QHfn,9599,2022-02-02T06:45:47Z,2022-02-02T06:45:47Z,OWNER,"Prototype, not sure that this actually works yet:
```diff
diff --git a/datasette/database.py b/datasette/database.py
index 6ce8721..0c4aec7 100644
--- a/datasette/database.py
+++ b/datasette/database.py
@@ -256,18 +256,26 @@ class Database:
         # Try to get counts for each table, $limit timeout for each count
         counts = {}
         for table in await self.table_names():
-            try:
-                table_count = (
-                    await self.execute(
-                        f""select count(*) from [{table}]"",
-                        custom_time_limit=limit,
-                    )
-                ).rows[0][0]
-                counts[table] = table_count
-            # In some cases I saw ""SQL Logic Error"" here in addition to
-            # QueryInterrupted - so we catch that too:
-            except (QueryInterrupted, sqlite3.OperationalError, sqlite3.DatabaseError):
-                counts[table] = None
+            print(table.lower())
+            if table.lower() == ""knn"":
+                counts[table] = 0
+            else:
+                try:
+                    table_count = (
+                        await self.execute(
+                            f""select count(*) from [{table}]"",
+                            custom_time_limit=limit,
+                        )
+                    ).rows[0][0]
+                    counts[table] = table_count
+                # In some cases I saw ""SQL Logic Error"" here in addition to
+                # QueryInterrupted - so we catch that too:
+                except (
+                    QueryInterrupted,
+                    sqlite3.OperationalError,
+                    sqlite3.DatabaseError,
+                ):
+                    counts[table] = None
         if not self.is_mutable:
             self._cached_table_counts = counts
         return counts
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1113384383,
https://github.com/simonw/datasette/issues/1607#issuecomment-1027634490,https://api.github.com/repos/simonw/datasette/issues/1607,1027634490,IC_kwDOBm6k_c49QHU6,9599,2022-02-02T06:44:30Z,2022-02-02T06:44:30Z,OWNER,"Prototype:
```diff
diff --git a/datasette/app.py b/datasette/app.py
index 09d7d03..e2a5aea 100644
--- a/datasette/app.py
+++ b/datasette/app.py
@@ -724,6 +724,47 @@ class Datasette:
                     sqlite_extensions[extension] = None
             except Exception:
                 pass
+        # More details on SpatiaLite
+        if ""spatialite"" in sqlite_extensions:
+            spatialite_details = {}
+            fns = (
+                ""spatialite_version"",
+                ""spatialite_target_cpu"",
+                ""rcheck_strict_sql_quoting"",
+                ""freexl_version"",
+                ""proj_version"",
+                ""geos_version"",
+                ""rttopo_version"",
+                ""libxml2_version"",
+                ""HasIconv"",
+                ""HasMathSQL"",
+                ""HasGeoCallbacks"",
+                ""HasProj"",
+                ""HasProj6"",
+                ""HasGeos"",
+                ""HasGeosAdvanced"",
+                ""HasGeosTrunk"",
+                ""HasGeosReentrant"",
+                ""HasGeosOnlyReentrant"",
+                ""HasMiniZip"",
+                ""HasRtTopo"",
+                ""HasLibXML2"",
+                ""HasEpsg"",
+                ""HasFreeXL"",
+                ""HasGeoPackage"",
+                ""HasGCP"",
+                ""HasTopology"",
+                ""HasKNN"",
+                ""HasRouting"",
+            )
+            for fn in fns:
+                try:
+                    result = conn.execute(""select {}()"".format(fn))
+                    spatialite_details[fn] = result.fetchone()[0]
+                except Exception:
+                    pass
+            sqlite_extensions[""spatialite""] = spatialite_details
+
         # Figure out supported FTS versions
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1109783030,
https://github.com/simonw/datasette/issues/1586#issuecomment-1027648180,https://api.github.com/repos/simonw/datasette/issues/1586,1027648180,IC_kwDOBm6k_c49QKq0,9599,2022-02-02T07:13:31Z,2022-02-02T07:13:31Z,OWNER,"Running it as part of `datasette publish` is a smart idea - I'm slightly nervous about modifying the database file that has been published though, since part of the undocumented contract right now is that the bytes served are the exact same bytes as the ones you ran the publish against.

But there's no reason for that expectation to exist, and I doubt anyone is relying on that.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1096536240,
https://github.com/simonw/datasette/issues/1618#issuecomment-1028294089,https://api.github.com/repos/simonw/datasette/issues/1618,1028294089,IC_kwDOBm6k_c49SoXJ,770231,2022-02-02T19:42:03Z,2022-02-02T19:42:03Z,NONE,"Thanks for looking into this. It might have been nice if `explain` surfaced these function calls. Looks like `explain query plan` does, but only for basic queries.

```
sqlite-utils fixtures.db 'explain query plan select * from pragma_function_list(), pragma_database_list(), pragma_module_list()' -t
  id    parent    notused  detail
----  --------  ---------  ------------------------------------------------
   4         0          0  SCAN pragma_function_list VIRTUAL TABLE INDEX 0:
   8         0          0  SCAN pragma_database_list VIRTUAL TABLE INDEX 0:
  12         0          0  SCAN pragma_module_list VIRTUAL TABLE INDEX 0:
```


```
sqlite-utils fixtures.db 'explain query plan select * from pragma_function_list() as fl, pragma_database_list() as dl, pragma_module_list() as ml' -t
  id    parent    notused  detail
----  --------  ---------  ------------------------------
   4         0          0  SCAN fl VIRTUAL TABLE INDEX 0:
   8         0          0  SCAN dl VIRTUAL TABLE INDEX 0:
  12         0          0  SCAN ml VIRTUAL TABLE INDEX 0:
```
","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121121305,
https://github.com/simonw/datasette/pull/1626#issuecomment-1028420821,https://api.github.com/repos/simonw/datasette/issues/1626,1028420821,IC_kwDOBm6k_c49THTV,9599,2022-02-02T22:32:26Z,2022-02-02T22:33:31Z,OWNER,"That broke on a macOS test: https://github.com/simonw/datasette/runs/5044036993?check_suite_focus=true

I'm going to remove macOS and Ubuntu and just try Windows purely to see what happens there.","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1122451096,
https://github.com/simonw/datasette/issues/1618#issuecomment-1027653005,https://api.github.com/repos/simonw/datasette/issues/1618,1027653005,IC_kwDOBm6k_c49QL2N,9599,2022-02-02T07:22:13Z,2022-02-02T07:22:13Z,OWNER,"There's a workaround for this at the moment, which is to use parameterized SQL queries. For example, this:

https://fivethirtyeight.datasettes.com/polls?sql=select+*+from+books+where+title+%3D+%3Atitle&title=The+Pragmatic+Programmer

So the SQL query is `select * from books where title = :title` and then `&title=...` is added to the URL.

The reason behind the quite aggressive pragma filtering is that SQLite allows you to execute pragmas using function calls, like this one:

```sql
SELECT * FROM pragma_index_info('idx52');
```
These can be nested arbitrarily deeply in sub-queries, so it's difficult to write a regular expression that will definitely catch them.

I'm open to relaxing the regex a bit, but I need to be very confident that it's safe to do so.

","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121121305,
https://github.com/simonw/datasette/issues/1619#issuecomment-1027647257,https://api.github.com/repos/simonw/datasette/issues/1619,1027647257,IC_kwDOBm6k_c49QKcZ,9599,2022-02-02T07:11:43Z,2022-02-02T07:11:43Z,OWNER,Weirdly the bug does NOT exhibit itself on this demo: https://datasette-apache-proxy-demo.datasette.io/prefix/fixtures/no_primary_key/1 - which correctly links to https://datasette-apache-proxy-demo.datasette.io/prefix/fixtures/no_primary_key/1.json,"{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121583414,
https://github.com/simonw/datasette/issues/1620#issuecomment-1028385067,https://api.github.com/repos/simonw/datasette/issues/1620,1028385067,IC_kwDOBm6k_c49S-kr,9599,2022-02-02T21:42:23Z,2022-02-02T21:42:23Z,OWNER,"```
% curl -s -I 'https://latest.datasette.io/' | grep link
link: https://latest.datasette.io/.json; rel=""alternate""; type=""application/json+datasette""
% curl -s -I 'https://latest.datasette.io/fixtures' | grep link
link: https://latest.datasette.io/fixtures.json; rel=""alternate""; type=""application/json+datasette""
% curl -s -I 'https://latest.datasette.io/fixtures?sql=select+1' | grep link
link: https://latest.datasette.io/fixtures.json?sql=select+1; rel=""alternate""; type=""application/json+datasette""
% curl -s -I 'https://latest.datasette.io/-/plugins' | grep link 
link: https://latest.datasette.io/-/plugins.json; rel=""alternate""; type=""application/json+datasette""
```","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1121618041,