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From Jake Luciani <jak...@gmail.com>
Subject Re: Operator on secondary indexes in 0.8.x (GTE/LTE)
Date Tue, 11 Oct 2011 21:01:04 GMT
This hasn't changed in AFAIK,  In Brisk we had the same problem in CFS so we
created a sentinel value that all rows shared then it works. CASSANDRA-2915
should fix it.

On Tue, Oct 11, 2011 at 4:48 PM, Sasha Dolgy <sdolgy@gmail.com> wrote:

> I was trying to get a range of rows based on a secondary_index that was
> defined.  Any rows where age was greater than or equal to ... it didn't
> work.  Is this a continued limitation?  Did a quick look in JIRA, couldn't
> find anything.
>
> The output from "help get;" on the cli contains the following, which led me
> to believe it was a limitation on Cassandra 0.7.x and not on 0.8.x ...
>
> get <cf> where <col> <operator> <value> [
>     and <col> <operator> <value> and ...] [limit <limit>];
> get <cf> where <col> <operator> <function>(<value>) [
>     and <col> <operator> <function> and ...] [limit <limit>];
>
> - operator: Operator to test the column value with. Supported operators are
>   =, >, >=, <, <= .
>
>   In Cassandra 0.7 at least one = operator must be present.
>
> [default@sdo]  get user where age >= 18;
> No indexed columns present in index clause with operator EQ
> [default@sdo]  get user where gender = 1 and age >= 18
> (returns results)
>
> Tested this behavior on 0.8.2, 0.8.6 and now 0.8.7 ...
>
> create column family user
>   with column_type = 'Standard'
>   and comparator = 'UTF8Type'
>   and default_validation_class = 'BytesType'
>   and key_validation_class = 'BytesType'
>   and memtable_operations = 0.24843749999999998
>   and memtable_throughput = 53
>   and memtable_flush_after = 1440
>   and rows_cached = 0.0
>   and row_cache_save_period = 0
>   and keys_cached = 200000.0
>   and key_cache_save_period = 14400
>   and read_repair_chance = 1.0
>   and gc_grace = 864000
>   and min_compaction_threshold = 4
>   and max_compaction_threshold = 32
>   and replicate_on_write = true
>   and row_cache_provider = 'ConcurrentLinkedHashCacheProvider'
>   and column_metadata = [
>     {column_name : 'gender',
>     validation_class : LongType,
>     index_name : 'user_gender_idx',
>     index_type : 0},
>     {column_name : 'year',
>     validation_class : LongType,
>     index_name : 'user_year_idx',
>     index_type : 0}];
>
>
>
> --
> Sasha Dolgy
> sasha.dolgy@gmail.com
>



-- 
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