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SPARQL equivalent to Oracle "like" operator

malcolm83Jun 3 2009 — edited Jun 3 2009
When writing PLSQL using the semantic extensions, I can use "like" to do wildcarded string matches. The closest thing I've been able to come up with in SPARQL is to use REGEX. When I do this, the adapter explodes my query into a large number of JDBC queries. Can you recommend a better approach?

Comments

Karthick2003
945400 wrote:
create index ts_portfolio_dm.instrument_ref_dim_indx1 on ts_portfolio_dm.instrument_reference_dim(instrument_type_dvd, revenue_source_dvd, pricing_dt, instrument_dim_key);

when I execute this command the process is taking too long to create an index .is there any additional coding that can help create index fast.
The time taken to create an index depends largely on the the volume of data in the table and number of columns being indexed.
fjfranken
Hi

You could add the "NOLOGGING" option.
This might speed it up a bit, because no redo logging is written for the index-creation. But it is only a small improvement

Your statement would then look like: 
CREATE INDEX ts_portfolio_dm.instrument_ref_dim_indx1
   ON ts_portfolio_dm.instrument_reference_dim (instrument_type_dvd
,                                               revenue_source_dvd
,                                               pricing_dt
,                                               instrument_dim_key) nologging ;
Maybe also add the PARALLEL clause to force parallel execution. But for the remainder I agree with the other reply. It is simply the amount of data that makes the time here
948403
Hi ,

thanks for the reply .

could you please give me the statement that contains both

1.parllel creation 2.no logging.

Is there any further improvements that can be done on this .
The table is very huge and lot of procedures use this .Hence the reson we are not able to allow the statement to execute for more time .
cheers,
P
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Post Details

Locked on Jul 1 2009
Added on Jun 3 2009
#database-key-features, #rdf-graph-property-graph
1 comment
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