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Message #07057
Re: [GSOC 2014] "CREATE OR REPLACE, CREATE IF NOT EXISTS, and DROP IF EXISTS" Project
Hi James,
Replying again cause the text did not appear in the mailing list.
Sure, I will try and implement that feature too. Thank you very much for
the suggestion.
Thanks,
Sriram
On Thu, Mar 20, 2014 at 4:02 AM, James Briggs <james.briggs@xxxxxxxxx>wrote:
> Hi Sriram.
>
> If you could add "CREATE VIEW ... FORCE" too, that would be awesome.
>
> See the Oracle Enterprise docs for the behavior:
> http://docs.oracle.com/cd/B19306_01/server.102/b14200/statements_8004.htm
>
> Thanks, James.
>
> --------------------------------------------
> On Wed, 3/19/14, Sergei Golubchik <serg@xxxxxxxxxxx> wrote:
>
> Subject: Re: [Maria-developers] [GSOC 2014] "CREATE OR REPLACE, CREATE IF
> NOT EXISTS, and DROP IF EXISTS" Project
> To: "sriram patil" <spsrirampatil@xxxxxxxxx>
> Cc: maria-developers@xxxxxxxxxxxxxxxxxxx
> Date: Wednesday, March 19, 2014, 12:22 PM
>
> Hi, sriram!
>
> On Mar 19, sriram patil wrote:
> > Hi Sergei,
> >
> > I studied lex and yacc and understood complete parser
> written in
> > sql_yacc.yy. Also went through the constants and
> symbols declared in lex.h,
> > sql_yacc.h, sql_cmd.h.
>
> Right
>
> > I found out that OR REPLACE and IF NOT EXISTS is
> already implemented for
> > tables. The IF NOT EXISTS rule is also defined for
> index in yacc file but
> > not handled in the execution code. And for other object
> types we need to
> > add the rules in yacc files and also need to change the
> code in
> > "mysql_create_<object_type>" functions in
> respective files.
>
> Right
>
> > The OR REPLACE and IF NOT EXISTS are handled in the
> create execution
> > itself. I found two flags in LEX class which are used
> for the purpose,
> > create_info.options and check_exists.
> >
> > So, are all the things that I have compiled correct?
>
> Yes
>
> > I have an initial draft of my proposal ready. I will
> upload it on the GSOC
> > portal today, please review. Should I also email the
> same to you?
>
> No, please don't. I get an email automatically for every new
> proposal.
>
> Regards,
> Sergei
>
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