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	add inidexes based on usage
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				@ -16,10 +16,6 @@
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CREATE TABLE user_daily_visits ( user_id TEXT NOT NULL,
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					CREATE TABLE user_daily_visits ( user_id TEXT NOT NULL,
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                                 device_id TEXT,
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					                                 device_id TEXT,
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                                 user_agent TEXT NOT NULL,
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                                 timestamp BIGINT NOT NULL );
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					                                 timestamp BIGINT NOT NULL );
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					CREATE INDEX user_daily_visits_uts_idx ON user_daily_visits(user_id, timestamp);
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/* What indexes should I include?
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					CREATE INDEX user_daily_visits_ts_idx ON user_daily_visits(timestamp);
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 * Reads are offline so should optimise for writes
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 * Need to check if already an entry so user,day
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 */
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