---
title: "SQL-107: EbillInvoiceQueryProvider.GetInvoice"
summary: Read operation for `EbillInvoiceQueryProvider.GetInvoice`
status: draft
owner: SAIF.Core documentation team
last_reviewed: 2026-09-24
library: SAIF.Data
reference_type: package
---

# SQL-107: EbillInvoiceQueryProvider.GetInvoice

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

## Classification

| Field | Value |
| --- | --- |
| **SQL ID** | SQL-107 |
| **Operation type** | Read |
| **Execution method** | ORM (NHibernate LINQ) |
| **Database** | Oracle* |
| **Schema** | [unqualified]** |
| **Command type** | N/A (ORM-generated) |
| **Business object** | `EbillInvoiceQueryProvider` |
| **Criteria property** | N/A — ORM |
| **Lifecycle method** | `GetInvoice` |

## Parameters

| Parameter | Direction | Type | Max length | Description |
| --- | --- | --- | --- | --- |
| `invoiceMonth` | Input | DateTime | N/A | Method argument of `EbillInvoiceQueryProvider.GetInvoice` bound into the ORM expression; NHibernate generates the bind variable at runtime |

## Tables

| Table | Access | Columns used |
| --- | --- | --- |
| [EBILL_INVOICE](../database-tables.md#ebill_invoice) | SELECT | `EBILL_INVOICE_SEQ_NUM`, `UPDATE_NUM`, `RECEIVED_DATE`, `BEGIN_DATE`, `END_DATE`, `TRANSACTION_FEE_AMT`, `INVOICE_AMOUNT`, `UPDATE_DATE`, `UPDATE_USER`, `EBILL_CLEARINGHOUSE_SEQ_NUM` |

## LINQ statement

Source: `Data/SAIF.Data/Queries/Claims/Ebilling/EbillInvoiceQueryProvider.cs:25`

The repository is a class field initialised from `Factory.GetRepository<EbillInvoice>()` at `Data/SAIF.Data/Queries/Claims/Ebilling/EbillInvoiceQueryProvider.cs:18`.

```csharp
// Data/SAIF.Data/Queries/Claims/Ebilling/EbillInvoiceQueryProvider.cs:18
invoiceRepository = Factory.GetRepository<EbillInvoice>().Query();

// Data/SAIF.Data/Queries/Claims/Ebilling/EbillInvoiceQueryProvider.cs:25
return invoiceRepository.FirstOrDefault(x => x.BeginDate == invoiceMonth);
```

## 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 *
FROM (
  SELECT
    EI.EBILL_INVOICE_SEQ_NUM,
    EI.UPDATE_NUM,
    EI.RECEIVED_DATE,
    EI.BEGIN_DATE,
    EI.END_DATE,
    EI.TRANSACTION_FEE_AMT,
    EI.INVOICE_AMOUNT,
    EI.UPDATE_DATE,
    EI.UPDATE_USER,
    EI.EBILL_CLEARINGHOUSE_SEQ_NUM
  FROM EBILL_INVOICE EI
  WHERE EI.BEGIN_DATE = :invoiceMonth
)
WHERE ROWNUM <= 1
```

Translation notes:

- Oracle10 row limit for `FirstOrDefault()`: the query (including any `ORDER BY`) is wrapped in `ROWNUM <= 1` (limit written inline; NHibernate binds it as a parameter at runtime).

## Operations and processes

- [E-bill processing queries](../operations/e-bill-processing-queries.md)


## Sources
- `Data/SAIF.Data/Queries/Claims/Ebilling/EbillInvoiceQueryProvider.cs:25`