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https://issues.apache.org/jira/browse/CASSANDRA-2530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13022926#comment-13022926
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Rick Shaw commented on CASSANDRA-2530:
--------------------------------------
{quote}
I'm slightly against having both Float and Double – I'd like to discourage
premature optimization and using 4 bytes for floating point instead of 8 is
almost always the wrong space:accuracy tradeoff today.
{quote}
I guess I added Float and Double together because they were so similar it
seemed silly not to. It is also a JDBC type and seemed easy enough to provide
and make implementing the next stages of JDBC easier.
Selfishly, my implementations use a lot of small float numbers like: "1.2" or
"66.667" so a row might have 50 columns of such data and 5-50 million rows. So
a selfish trend on my part is to provide the smallest representation on bytes
stored/in-memory.
{quote}
Similarly not sure there is a raison d'être for ByteType.
{quote}
My reasoning was more about a guaranteed length that was short. We plan to put
ENUMs into them in prepared statements. Again, selfishly, if we have a lot of
Float usage we *really* have a lot of numbers between 1-10 to store! So all
these volumes above are just more exaggerated in our need to store lots of
short numbers in an optimal width. But I do understand the variable integer
{{IntegerType}} could be used.
{quote}
This looks wrong:
{quote}
Yep... Cut-n-paste in a hurry... will get you every time! I'll fix with v3
patch. (starting to see a trend)
Yes. I'll look into the error of my "whitespace" ways.
I will try to conjure some tests that dovetail into the existing testing
framework.
A separate ticket would probably be good for ANTLR work. I'll give it a shot
but am about 30 years rusty on parsing grammars. But I'll gladly give it a try.
> Additional AbstractType data type definitions to enrich CQL
> -----------------------------------------------------------
>
> Key: CASSANDRA-2530
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2530
> Project: Cassandra
> Issue Type: Improvement
> Components: Core
> Affects Versions: 0.8.0
> Reporter: Rick Shaw
> Priority: Trivial
> Labels: cql
> Attachments: patch-to-add -5 -new-AbstractTypes-v2.txt, patch-to-add
> -5 -new-AbstractTypes.txt
>
>
> Provide 5 additional Datatypes: ByteType, DateType, BooleanType, FloatType,
> DoubleType.
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