Re: ask for review of MERGE

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От Boxuan Zhai
Тема Re: ask for review of MERGE
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Msg-id AANLkTiky7H-faSMPx-=nTxH6HoG=U3t8nQR3Ek=XC+Am@mail.gmail.com
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Ответ на Re: ask for review of MERGE  (Robert Haas <robertmhaas@gmail.com>)
Ответы Re: ask for review of MERGE  (Greg Smith <greg@2ndquadrant.com>)
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On Wed, Sep 29, 2010 at 9:16 PM, Robert Haas <robertmhaas@gmail.com> wrote:
On Wed, Sep 29, 2010 at 2:44 AM, Greg Smith <greg@2ndquadrant.com> wrote:
> One compiler warning I noticed that needs to get resolved:
>
> src/backend/commands/explain.c:
>
> explain.c: In function ‘ExplainMergeActions’:
> explain.c:1528: warning: comparison of distinct pointer types lacks a cast
>
> That is complaining about this section:
>
> if (mt_planstate->operation != CMD_MERGE ||
> mt_planstate->mt_mergeActPstates == NIL)
> return;
>
> So presumably that comparison with NIL needs a cast. Once I get more
> familiar with the code I'll fix that myself if Boxuan doesn't offer a
> suggestion first.

Possibly NULL was meant instead of NIL.  NIL is specifically for a List.


Yes, it should be NULL instead of NIL. 

At first, I designed this filed as a List. But I changed it into an array in the last editions. This is why I have an unmatched assignment here. Sorry for that. 
 
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise Postgres Company

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