Add indexes on samples.originating_data_file_id and samples.sample_type_id#2637
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stuzart wants to merge 1 commit into
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Add indexes on samples.originating_data_file_id and samples.sample_type_id#2637stuzart wants to merge 1 commit into
stuzart wants to merge 1 commit into
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Summary
samples.originating_data_file_id, which was introduced in 2016 without onesamples.sample_type_idBoth columns are frequently used as WHERE filters but were causing full table scans on the
samplestable.originating_data_file_idis queried on every DataFile show page (via the related items tab and asset buttons partial).sample_type_idis queried during sample extraction, metadata updates, and attribute resolution for linked samples.Both values are set once at bulk import time (
Sample.importwithbatch_size: 2000) and not subsequently changed, so the insert overhead is negligible.