historian

Selecting a column with period in the column name SQL Server

由 偶尔善良 提交于 2019-12-23 11:59:09
问题 I am linked to a Proficy Historian that allows periods in the column names. Because the data is stored in a non DBMS format I can not use openquery to get the data because there is no set schema to the tables. So I must use four part name syntax to get the data. This example works: SELECT * FROM iHist...[SELECT * FROM ihTrend] but this fails with Incorrect syntax near '.'. SELECT * FROM iHist...[SELECT [SERVER.pid_astatus[07][0].F_CV.Value] FROM ihTrend] where SERVER.pid_astatus[07][0].F_CV

How do I find the history of transactions for an Asset in a blockchain implemented using hyperledger-composer?

由 我怕爱的太早我们不能终老 提交于 2019-12-07 02:33:45
问题 I'm working on the latest rev of hyperledger-composer (V0.13) and have built a network with multiple roles, each of which can invoke selected transactions within the blockchain. I would now like to query the blockchain (?Historian?) for all transactions which have been executed against a specific Order (defined type of asset). I've used two different appoaches to pulling Historian data, once through direct API access historian.getall() and the other through a defined query: query

AspenTech InfoPlus 21 - How to connect and query data

由 老子叫甜甜 提交于 2019-12-05 22:48:15
问题 I will be given access to an AspenTech InfoPlus 21 endpoint, but the systems seems to be quite legacy and not very well (publicly) documented. I will need to query some data (i.e. explore what is in the database). I had a few questions regarding connecting and querying InfoPlus 21 historians. How can I connect to the InfoPlus 21 server (in the best case programmatically )? I am mostly using mac, can use linux and windows through a VM. Really, and ideas for working solutions are welcome. How

How do I query raw data from a Proficy Historian?

由 亡梦爱人 提交于 2019-12-03 16:34:01
问题 How can I retrieve raw time-series data from a Proficy Historian/iHistorian? Ideally, I would ask for data for a particular tag between two dates. 回答1: There are several different sampling modes you can experiment with. Raw Interpolated Lab Trend Calculated These modes are available using all of the following APIs. User API (ihuapi.dll) SDK (ihsdk.dll) OLEDB (iholedb.dll) Client Acess API (Proficy.Historian.ClientAccess.API) Of these the trend sampling mode is probably what you want since it

How do I query raw data from a Proficy Historian?

由 断了今生、忘了曾经 提交于 2019-12-03 05:41:11
How can I retrieve raw time-series data from a Proficy Historian/iHistorian? Ideally, I would ask for data for a particular tag between two dates. There are several different sampling modes you can experiment with. Raw Interpolated Lab Trend Calculated These modes are available using all of the following APIs. User API (ihuapi.dll) SDK (ihsdk.dll) OLEDB (iholedb.dll) Client Acess API (Proficy.Historian.ClientAccess.API) Of these the trend sampling mode is probably what you want since it is specifically designed for charting/trending. Though, lab and interpolated may be useful as well. Read the
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