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# SQL Command PHD Variable List

The command to determine measurements of unit batches from HEB data sources is a SQL SELECT statement that is structured according to the following syntax:

```
SELECT
[EQUIPMENT].[NAME] AS [EquipmentName],
[EQUIPMENT].[FULLNAME] AS [Namespace],
[EQUIPMENT_ALIAS].[PHDTAG] AS [PhdTag],
[EQUIPMENT_ALIAS].[ALIAS] AS [Alias]
FROM
[ProcedureAnalyst].[pa].[TPB_VW_EQ][EQUIPMENT],
[ProcedureAnalyst].[pa].[TPB_VW_EQ_ATTR][EQUIPMENT_ALIAS]
WHERE
[EQUIPMENT].[EQUIPMENTID] = [EQUIPMENT_ALIAS].[EQUIPMENTID] AND
[EQUIPMENT].[EQUIPMENTLEVELNAME] ='Unit'
```

The SQL command to determine measurements contains alias names. These alias names appear in square brackets to the right of the word "AS".

{% hint style="info" %}
The alias names in the command do not need to be modified.
{% endhint %}


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