---
title: "SQL-094: Retrieve BillOverride"
summary: Read operation against BillOverride via NHibernate ORM.
status: draft
owner: SAIF Doc Gen
last_reviewed: 2026-09-24
library: SAIF.Services
reference_type: package
---

# SQL-094: Retrieve BillOverride

This ORM statement performs a read operation on `BillOverride` via `IUnitOfWork.GetRepository<T>()`, executed from `Services/SAIF.Services/Edi/BillOverrideService.cs (L62, L72, L81)`.

## Classification

| Field | Value |
| --- | --- |
| **SQL ID** | SQL-094 |
| **Operation type** | Read |
| **Execution method** | ORM (NHibernate LINQ) |
| **Database** | Oracle |
| **Schema** | [unqualified]** |
| **Command type** | N/A (ORM-generated) |
| **Business object** | `BillOverride` |
| **Criteria property** | N/A — ORM |
| **Lifecycle method** | `Get, GetOverrideById` |

## Parameters

| Parameter | Direction | Type | Max length | Description |
| --- | --- | --- | --- | --- |
| `billId` | Input | ** | N/A | `bill.Id == billId` → column BILL_ID |
| `id` | Input | ** | N/A | `bill.Id == id` → column BILL_ID |

## Tables

| Table | Access | Columns used |
| --- | --- | --- |
| [EDI_BILL_OVERRIDE](../database-tables.md#edi_bill_override) | SELECT | `BILL_ID`, `BYPASS_FLAG`, `BILL_TYPE_CODE`, `CBP_ADMISSION_TYPE_CODE`, `DRG_CODE`, `OVERRIDE_TEXT`, `STATEMENT_THRU_DATE`, `UB_BILL_TYPE_CODE`, `UPDATE_DATE`, `UPDATE_NUM`, `UPDATE_USER` |

## LINQ statement

Source: `Services/SAIF.Services/Edi/BillOverrideService.cs:62`

```csharp
// Services/SAIF.Services/Edi/BillOverrideService.cs:62-64
               ediBillOverride = unitOfWork.GetRepository<DataModel.BillOverride>()
                    .Query()
                    .Single(bill => bill.Id == billId);

// Services/SAIF.Services/Edi/BillOverrideService.cs:72
            var overrides = unitOfWork.GetRepository<DataModel.BillOverride>().Query().ToList();

// Services/SAIF.Services/Edi/BillOverrideService.cs:81-83
            return unitOfWork.GetRepository<DataModel.BillOverride>()
                    .Query()
                    .Single(bill => bill.Id == id);
```

## 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
-- Services/SAIF.Services/Edi/BillOverrideService.cs:62
SELECT
  EBO.BILL_ID,
  EBO.BYPASS_FLAG,
  EBO.BILL_TYPE_CODE,
  EBO.CBP_ADMISSION_TYPE_CODE,
  EBO.DRG_CODE,
  EBO.OVERRIDE_TEXT,
  EBO.STATEMENT_THRU_DATE,
  EBO.UB_BILL_TYPE_CODE,
  EBO.UPDATE_DATE,
  EBO.UPDATE_NUM,
  EBO.UPDATE_USER
FROM EDI_BILL_OVERRIDE EBO
WHERE EBO.BILL_ID = :billId
-- NHibernate expects at most one row

-- Services/SAIF.Services/Edi/BillOverrideService.cs:72
SELECT
  EBO.BILL_ID,
  EBO.BYPASS_FLAG,
  EBO.BILL_TYPE_CODE,
  EBO.CBP_ADMISSION_TYPE_CODE,
  EBO.DRG_CODE,
  EBO.OVERRIDE_TEXT,
  EBO.STATEMENT_THRU_DATE,
  EBO.UB_BILL_TYPE_CODE,
  EBO.UPDATE_DATE,
  EBO.UPDATE_NUM,
  EBO.UPDATE_USER
FROM EDI_BILL_OVERRIDE EBO

-- Services/SAIF.Services/Edi/BillOverrideService.cs:81
SELECT
  EBO.BILL_ID,
  EBO.BYPASS_FLAG,
  EBO.BILL_TYPE_CODE,
  EBO.CBP_ADMISSION_TYPE_CODE,
  EBO.DRG_CODE,
  EBO.OVERRIDE_TEXT,
  EBO.STATEMENT_THRU_DATE,
  EBO.UB_BILL_TYPE_CODE,
  EBO.UPDATE_DATE,
  EBO.UPDATE_NUM,
  EBO.UPDATE_USER
FROM EDI_BILL_OVERRIDE EBO
WHERE EBO.BILL_ID = :id
-- NHibernate expects at most one row
```

## Operations and processes
- BillOverrideService.Get — see [Operations and processes](../operations-processes.md)
- BillOverrideService.GetOverrideById — see [Operations and processes](../operations-processes.md)

## Sources
- `Services/SAIF.Services/Edi/BillOverrideService.cs (L62, L72, L81)`