| From: | "Ansley, Michael" <Michael(dot)Ansley(at)intec(dot)co(dot)za> | 
|---|---|
| To: | "'Thomas Lockhart'" <lockhart(at)alumni(dot)caltech(dot)edu>, Leon <leon(at)udmnet(dot)ru> | 
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgreSQL(dot)org | 
| Subject: | RE: [HACKERS] Status report: long-query-string changes | 
| Date: | 1999-09-13 08:16:54 | 
| Message-ID: | 1BF7C7482189D211B03F00805F8527F748C062@S-NATH-EXCH2 | 
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| Thread: | |
| Lists: | pgsql-hackers | 
When is 6.6 being released?  I'm not sure about the greedy lexer, I don't
really know enough to comment, but at first glance, yes fine.  The question
is, though, what are possible operators.  Do we limit the user-defined
operators in PG to only to a specific subset of characters.  Perhaps we
should lex each operator separately, and then get the compiler to construct
logical operators from the physical components that it gets.
MikeA
>> -----Original Message-----
>> From: Thomas Lockhart [mailto:lockhart(at)alumni(dot)caltech(dot)edu]
>> Sent: Monday, September 13, 1999 5:33 AM
>> To: Leon
>> Cc: Tom Lane; pgsql-hackers(at)postgreSQL(dot)org
>> Subject: Re: [HACKERS] Status report: long-query-string changes
>> 
>> 
>> > Thomas Lockhart should speak up - he seems the only person who
>> > has objections yet. If the proposed thing is to be 
>> declined, something
>> > has to be applied instead in respect to lexer reject feature and
>> > accompanying size limits, as well as grammar inconsistency.
>> 
>> Hmm. I'd suggest that we go with the "greedy lexer" solution, which
>> continues to gobble characters which *could* be an operator until
>> other characters or whitespace are encountered.
>> 
>> I don't recall any compelling cases for which this would be an
>> inadequate solution, and we have plenty of time until v6.6 
>> is released
>> to discover problems and work out alternatives.
>> 
>> Sorry for slowing things up; but fwiw I *did* think about it 
>> some more
>> ;)
>> 
>>                     - Thomas
>> 
>> -- 
>> Thomas Lockhart				
>> lockhart(at)alumni(dot)caltech(dot)edu
>> South Pasadena, California
>> 
>> ************
>> 
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