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Auxiliary swid_tagstats table boosts performance

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This commit is contained in:
Andreas Steffen
2014-06-23 13:32:50 +02:00
parent a4844dbc8f
commit d82aa931db
1 changed files with 14 additions and 0 deletions
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src/libimcv/imv/tables.sql
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@@ -291,3 +291,17 @@ CREATE INDEX "swid_tags_sessions_tag_id" ON "swid_tags_sessions" (
CREATE INDEX "swid_tags_sessions_session_id" ON "swid_tags_sessions" (
"session_id"
);
DROP TABLE IF EXISTS "swid_tagstats";
CREATE TABLE "swid_tagstats" (
"id" integer NOT NULL PRIMARY KEY,
"tag_id" integer NOT NULL REFERENCES "swid_tags" ("id"),
"device_id" integer NOT NULL REFERENCES "devices" ("id"),
"first_seen_id" integer NOT NULL REFERENCES "sessions" ("id"),
"last_seen_id" integer NOT NULL REFERENCES "sessions" ("id"),
UNIQUE ("tag_id", "device_id")
);
CREATE INDEX "swid_tagstats_tag_id" ON "swid_tagstats" ("tag_id");
CREATE INDEX "swid_tagstats_device_id" ON "swid_tagstats" ("device_id");
CREATE INDEX "swid_tagstats_first_seen_id" ON "swid_tagstats" ("first_seen_id");
CREATE INDEX "swid_tagstats_last_seen_id" ON "swid_tagstats" ("last_seen_id");