---
title: "SQL-169: LocationQueryProvider.GetPrimaryLocation"
summary: Read operation for `LocationQueryProvider.GetPrimaryLocation`
status: draft
owner: SAIF.Core documentation team
last_reviewed: 2026-09-24
library: SAIF.Data
reference_type: package
---

# SQL-169: LocationQueryProvider.GetPrimaryLocation

This statement is a read operation invoked through ORM (NHibernate LINQ). Executed by `LocationQueryProvider.GetPrimaryLocation`.

## Classification

| Field | Value |
| --- | --- |
| **SQL ID** | SQL-169 |
| **Operation type** | Read |
| **Execution method** | ORM (NHibernate LINQ) |
| **Database** | Oracle* |
| **Schema** | [unqualified]** |
| **Command type** | N/A (ORM-generated) |
| **Business object** | `LocationQueryProvider` |
| **Criteria property** | N/A — ORM |
| **Lifecycle method** | `GetPrimaryLocation` |

## Parameters

| Parameter | Direction | Type | Max length | Description |
| --- | --- | --- | --- | --- |
| `policyNumber` | Input | long | N/A | Method argument of `LocationQueryProvider.GetPrimaryLocation` bound into the ORM expression; NHibernate generates the bind variable at runtime |

## Tables

| Table | Access | Columns used |
| --- | --- | --- |
| [LOCATION](../database-tables.md#location) | SELECT | LOC_SEQ_NUM, POLICY_NUM, BUS_SEQ_NUM, AGENT_NUM, PARENT_LOC_SEQ_NUM, LOC_EFF_DATE, LOC_EXP_DATE, LOCATION_CODE, LOCATION_NAME, LOC_ADDR1, LOC_ADDR2, LOC_CITY, LOC_COUNTRY, LOC_PHONE, LOC_PHONE_EXT, LOC_FAX, LOC_STATE, LOC_ZIP, LOC_ZIP4, SIC_CODE, PROVIDER_NUM, CREATE_USER, CREATE_DATE, UPDATE_USER, UPDATE_DATE, USPS_BARCODE, EMAIL_ADDR, EMPLOYEE_COUNT, LOC_ADDR3, PRIMARY_LOCATION_FLAG, CELL_PHONE, LOC_COUNTY |

## LINQ statement

Source: `Data/SAIF.Data/Queries/Locations/LocationQueryProvider.cs:33-37`.

```csharp
public Location GetPrimaryLocation(long policyNumber)
{
    return Factory.GetRepository<Location>()
        .Query()
        .Where(x => x.PolicyNum == policyNumber && x.ExpirationDate == null && (x.LocationCode == "BUS"))
        .OrderBy(x => x.AddressLine1)
        .SingleOrDefault(x => x.IsPrimaryLocation && x.ExpirationDate == null);
}
```

## Sample SQL

> **Inferred SQL:** This SQL was inferred from the LINQ statement above and the NHibernate mappings. It is not concrete SQL from source code; NHibernate generates the executed statement at runtime, so aliases, column order, join syntax, and bind-parameter names may differ.

```sql
-- Inferred from LINQ (NHibernate mapping translation); not concrete SQL
SELECT
  L.LOC_SEQ_NUM,
  L.POLICY_NUM,
  L.BUS_SEQ_NUM,
  L.AGENT_NUM,
  L.PARENT_LOC_SEQ_NUM,
  L.LOC_EFF_DATE,
  L.LOC_EXP_DATE,
  L.LOCATION_CODE,
  L.LOCATION_NAME,
  L.LOC_ADDR1,
  L.LOC_ADDR2,
  L.LOC_CITY,
  L.LOC_COUNTRY,
  L.LOC_PHONE,
  L.LOC_PHONE_EXT,
  L.LOC_FAX,
  L.LOC_STATE,
  L.LOC_ZIP,
  L.LOC_ZIP4,
  L.SIC_CODE,
  L.PROVIDER_NUM,
  L.CREATE_USER,
  L.CREATE_DATE,
  L.UPDATE_USER,
  L.UPDATE_DATE,
  L.USPS_BARCODE,
  L.EMAIL_ADDR,
  L.EMPLOYEE_COUNT,
  L.LOC_ADDR3,
  L.PRIMARY_LOCATION_FLAG,
  L.CELL_PHONE,
  L.LOC_COUNTY
FROM LOCATION L
WHERE L.POLICY_NUM = :policyNumber
  AND L.LOC_EXP_DATE IS NULL
  AND L.LOCATION_CODE = 'BUS'
  AND L.PRIMARY_LOCATION_FLAG = 'Y'
  AND L.LOC_EXP_DATE IS NULL
ORDER BY L.LOC_ADDR1
-- SingleOrDefault: NHibernate expects at most one row
```

Translation notes:
- The `SingleOrDefault(predicate)` predicate is ANDed with the preceding `Where`. The duplicate `LOC_EXP_DATE IS NULL` is kept as written; the optimizer removes it.
- `IsPrimaryLocation` → `PRIMARY_LOCATION_FLAG`, YesNoType → `'Y'`.
- The literal `"BUS"` is a C# constant. NHibernate typically parameterizes constants, but it is shown inline for readability.
- `OrderBy` is kept before `SingleOrDefault`; the order does not change the result of a single-row read.

## Operations and processes

- [Location lookups](../operations/location-lookups.md)

## Business rules

- [SD-BR-062 Location code and contact-type precedence](../business-rules.md#sd-br-062-location-code-and-contact-type-precedence)

## Sources
- `Data/SAIF.Data/Queries/Locations/LocationQueryProvider.cs:33`