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Docs/DB schema/3.4/history

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This table contains values from "Numeric (float)" items.

Columns

Column Detail Default NULL? Type Ref from Ref to
itemid ID of the item for which these values were collected. NONE NOT NULL id items.itemid
clock Unix timestamp of the value. 0 NOT NULL time
value The actual value. 0.0000 NOT NULL double
ns Nanoseconds of this value in that particular second from "clock". 0 NOT NULL nanosec

Indexes

Name UNIQ Columns
history_1 No itemid, clock