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AVEVA™ Historian

SummaryHistory

  • Last UpdatedMar 10, 2025
  • 2 minute read

Contains one row for each occurrence of a summary operation. This table is used by the Event subsystem; it is not used by the replication subsystem. Rows are inserted even if the operation did not return data.

Column

Data Type

Description

(PK) LogKey

int NOT NULL

The unique numerical identifier of the summary's historical log. This value is automatically generated by the system when the record is added.

(FK) OperationKey

int NOT NULL

The unique numerical identifier for the summary operation. OperationKey is a foreign key from the SummaryOperation table.

SummaryDate

datetime2(7) NOT NULL

The date applicable to the results of the calculation. It is either the time of the beginning or end of the calculation period, as specified by the summary operation definition.

SumDateTimeStamp

tinyint NULL

Duplication of the TimeStamp column of the SummaryOperation table at the SummaryDate. This column allows you to keep the original calculation timestamp setting performed, in case of a later modification of the summary operation definition.

SumDateCalcType

varchar(3) NULL

Duplication of the CalcType column of the SummaryOperation table at the SummaryDate. This column allows you to keep the original calculation type performed, in case of a later modification of the summary operation definition.

SumDateDuration

real NULL

Duplication of the Duration column of the SummaryOperation table at the SummaryDate. This column allows you to keep the original calculation duration used in case of a later modification of the summary operation definition.

SumDateResolution

int NULL

Duplication of the Resolution column of the SummaryOperation table at the SummaryDate. This column allows you to keep the original calculation resolution used, in case of a later modification of the summary operation definition.

Status

tinyint NOT NULL

The flag indicating the status of the operation. 0 = Operation completed successfully; Not 0 = Operation is in progress or has failed. Reserved for future use.

OperationStart

datetime2(7) NULL

The timestamp when the calculation started for the operation.

OperationEnd

datetime2(7) NULL

The timestamp when the calculation completed for the operation.

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