Re: Optimizing nbtree ScalarArrayOp execution, allowing multi-column ordered scans, skip scan

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От Peter Geoghegan
Тема Re: Optimizing nbtree ScalarArrayOp execution, allowing multi-column ordered scans, skip scan
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Msg-id CAH2-WzmuQXqRYWTiv-Yvjn9cnaPU2kVrTPUroOVa3cTk5dVv=A@mail.gmail.com
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Ответ на Re: Optimizing nbtree ScalarArrayOp execution, allowing multi-column ordered scans, skip scan  (Tom Lane <tgl@sss.pgh.pa.us>)
Ответы Re: Optimizing nbtree ScalarArrayOp execution, allowing multi-column ordered scans, skip scan  (Peter Geoghegan <pg@bowt.ie>)
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On Sun, Apr 7, 2024 at 9:50 PM Tom Lane <tgl@sss.pgh.pa.us> wrote:
> If you're doing that, then surely
>
>                     if (j != (BTEqualStrategyNumber - 1) ||
>                         !(xform[j].skey->sk_flags & SK_SEARCHARRAY))
>                     {
>                         ...
>                     }
>                     else
>                     {
>                         Assert(j == (BTEqualStrategyNumber - 1));
>                         Assert(xform[j].skey->sk_flags & SK_SEARCHARRAY);
>                         Assert(xform[j].ikey == array->scan_key);
>                         Assert(!(cur->sk_flags & SK_SEARCHARRAY));
>                     }
>
> those first two Asserts are redundant with the "if" as well.

I'll get rid of those other two assertions as well, then.

--
Peter Geoghegan



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