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/issues/2019#issuecomment-1420101175,https://api.github.com/repos/simonw/datasette/issues/2019,1420101175,IC_kwDOBm6k_c5UpQY3,9599,2023-02-07T02:22:11Z,2023-02-07T02:22:11Z,OWNER,"A more complex example: https://latest.datasette.io/fixtures/sortable?_next=0~2E2650566289400591%2Ca%2Cu&_sort=sortable_with_nulls_2 SQL: ```sql select pk1, pk2, content, sortable, sortable_with_nulls, sortable_with_nulls_2, text from sortable where (sortable_with_nulls_2 > :p2 or (sortable_with_nulls_2 = :p2 and ((pk1 > :p0) or (pk1 = :p0 and pk2 > :p1)))) order by sortable_with_nulls_2, pk1, pk2 limit 101 ``` https://latest.datasette.io/fixtures?sql=select+pk1%2C+pk2%2C+content%2C+sortable%2C+sortable_with_nulls%2C+sortable_with_nulls_2%2C+text+from+sortable+where+%28sortable_with_nulls_2+%3E+%3Ap2+or+%28sortable_with_nulls_2+%3D+%3Ap2+and+%28%28pk1+%3E+%3Ap0%29%0A++or%0A%28pk1+%3D+%3Ap0+and+pk2+%3E+%3Ap1%29%29%29%29+order+by+sortable_with_nulls_2%2C+pk1%2C+pk2+limit+101&p0=a&p1=u&p2=0.2650566289400591 Here's the explain: 49 steps long https://latest.datasette.io/fixtures?sql=explain+select+pk1%2C+pk2%2C+content%2C+sortable%2C+sortable_with_nulls%2C+sortable_with_nulls_2%2C+text+from+sortable+where+%28sortable_with_nulls_2+%3E+%3Ap2+or+%28sortable_with_nulls_2+%3D+%3Ap2+and+%28%28pk1+%3E+%3Ap0%29%0D%0A++or%0D%0A%28pk1+%3D+%3Ap0+and+pk2+%3E+%3Ap1%29%29%29%29+order+by+sortable_with_nulls_2%2C+pk1%2C+pk2+limit+101&p2=0.2650566289400591&p0=a&p1=u Rewritten with a subselect: ```sql select * from ( select pk1, pk2, content, sortable, sortable_with_nulls, sortable_with_nulls_2, text from sortable ) where (sortable_with_nulls_2 > :p2 or (sortable_with_nulls_2 = :p2 and ((pk1 > :p0) or (pk1 = :p0 and pk2 > :p1)))) order by sortable_with_nulls_2, pk1, pk2 limit 101 ``` https://latest.datasette.io/fixtures?sql=select+*+from+(%0D%0A++select+pk1%2C+pk2%2C+content%2C+sortable%2C+sortable_with_nulls%2C+sortable_with_nulls_2%2C+text+from+sortable%0D%0A)%0D%0Awhere+(sortable_with_nulls_2+%3E+%3Ap2+or+(sortable_with_nulls_2+%3D+%3Ap2+and+((pk1+%3E+%3Ap0)%0D%0A++or%0D%0A(pk1+%3D+%3Ap0+and+pk2+%3E+%3Ap1))))+order+by+sortable_with_nulls_2%2C+pk1%2C+pk2+limit+101&p2=0.2650566289400591&p0=a&p1=u And here's the explain for that - also 49 steps: https://latest.datasette.io/fixtures?sql=explain+select+*+from+%28%0D%0A++select+pk1%2C+pk2%2C+content%2C+sortable%2C+sortable_with_nulls%2C+sortable_with_nulls_2%2C+text+from+sortable%0D%0A%29%0D%0Awhere+%28sortable_with_nulls_2+%3E+%3Ap2+or+%28sortable_with_nulls_2+%3D+%3Ap2+and+%28%28pk1+%3E+%3Ap0%29%0D%0A++or%0D%0A%28pk1+%3D+%3Ap0+and+pk2+%3E+%3Ap1%29%29%29%29+order+by+sortable_with_nulls_2%2C+pk1%2C+pk2+limit+101&p2=0.2650566289400591&p0=a&p1=u","{""total_count"": 0, ""+1"": 0, ""-1"": 0, ""laugh"": 0, ""hooray"": 0, ""confused"": 0, ""heart"": 0, ""rocket"": 0, ""eyes"": 0}",1573424830,