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# SQL Command Unit Batch Header Data

The command to retrieve unit batch header data is a SELECT statement that is structured according to the following syntax:

```
SELECT
[Customer] AS [Customer]
,[Location] AS [Location]
,[DataSourceId] AS [DataSourceId]
,[Namespace] AS [Namespace]
,[Start] AS  [Start]
,[End] AS [End]
,[LotNumber] AS [LotNumber]
,[DataSourceKeys] AS [DataSourceKeys]
FROM
[dbo].[BatchHeaderInformation]
WHERE
[Start] >= <<TS_From>> AND [End] <= <<TS_To>>
```

This SQL command contains both keywords and alias names.

The keywords ***<\<TS\_From>>*** and ***<\<TS\_To>>*** are enclosed in double angle brackets. At runtime, they are replaced with the configured start time and end time of the query to limit the query period.

The alias names are in square brackets to the right of the word "AS". When editing this command, note that the contents of the columns assigned to the alias names \[Start] and \[End] are timestamp values.

{% hint style="info" %}
You do not need to modify the keywords ***<\<TS\_From>>*** and ***<\<TS\_To>>*** or the alias names in the command.
{% endhint %}


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