¡@

Home 

python Programming Glossary: spectrum_spectrum_id

Why is the same SQLite query being 30 times slower when fetching only twice as many results?

http://stackoverflow.com/questions/10531898/why-is-the-same-sqlite-query-being-30-times-slower-when-fetching-only-twice-as-m

JOIN `spectrum` ON spectrum.spectrum_id MSMS_precursor.spectrum_spectrum_id INNER JOIN `feature` ON feature.msrun_msrun_id spectrum.msrun_msrun_id.. JOIN `spectrum` ON spectrum.spectrum_id MSMS_precursor.spectrum_spectrum_id INNER JOIN `feature` ON feature.msrun_msrun_id spectrum.msrun_msrun_id.. TABLE MSMS_precursor USING INDEX fk_MSMS_precursor_spectrum_spectrum_id_1 spectrum_spectrum_id ~5 rows ' query took 0.0754859447479..