---
title: "SQL-051: CertificateHolderQueryProvider.GetCertificateHolder"
summary: Read operation for `CertificateHolderQueryProvider.GetCertificateHolder`
status: draft
owner: SAIF.Core documentation team
last_reviewed: 2026-09-24
library: SAIF.Data
reference_type: package
---

# SQL-051: CertificateHolderQueryProvider.GetCertificateHolder

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

## Classification

| Field | Value |
| --- | --- |
| **SQL ID** | SQL-051 |
| **Operation type** | Read |
| **Execution method** | ORM (NHibernate LINQ) |
| **Database** | Oracle* |
| **Schema** | [unqualified]** |
| **Command type** | N/A (ORM-generated) |
| **Business object** | `CertificateHolderQueryProvider` |
| **Criteria property** | N/A — ORM |
| **Lifecycle method** | `GetCertificateHolder` |

## Parameters

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

## Tables

| Table | Access | Columns used |
| --- | --- | --- |
| [CERTIFICATE_HOLDER](../database-tables.md#certificate_holder) | SELECT | CERT_HOLD_SEQ_NUM, POLICY_NUM, CERT_HOLD_NAME1, CERT_HOLD_NAME2, EXPIRED_FLAG, SUPERSEDED_FLAG, CERT_HOLD_ADDR1, CERT_HOLD_ADDR2, CERT_HOLD_ADDR3, CERT_HOLD_CITY, CERT_HOLD_STATE, CERT_HOLD_COUNTRY, CERT_HOLD_ZIP, CERT_HOLD_ZIP4, FOREIGN_ADDRESS_FLAG, CERT_HOLD_PHONE, CERT_HOLD_FAX, CERT_HOLD_EMAIL, CREATE_USER, CREATE_DATE, UPDATE_USER, UPDATE_DATE, SUPERSEDED_BY_CERT_HOLD_SEQNUM |

## LINQ statement

Source: `Data/SAIF.Data/Queries/Policies/Certificates/CertificateHolderProvider.cs:21`. The repository is a class field initialised from `Factory.GetRepository<CertificateHolder>().Query()` at `Data/SAIF.Data/Queries/Policies/Certificates/CertificateHolderProvider.cs:16`.

```csharp
return repository.SingleOrDefault(c => c.Id == certificateHolderId);
```

## 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
  CH.CERT_HOLD_SEQ_NUM,
  CH.POLICY_NUM,
  CH.CERT_HOLD_NAME1,
  CH.CERT_HOLD_NAME2,
  CH.EXPIRED_FLAG,
  CH.SUPERSEDED_FLAG,
  CH.CERT_HOLD_ADDR1,
  CH.CERT_HOLD_ADDR2,
  CH.CERT_HOLD_ADDR3,
  CH.CERT_HOLD_CITY,
  CH.CERT_HOLD_STATE,
  CH.CERT_HOLD_COUNTRY,
  CH.CERT_HOLD_ZIP,
  CH.CERT_HOLD_ZIP4,
  CH.FOREIGN_ADDRESS_FLAG,
  CH.CERT_HOLD_PHONE,
  CH.CERT_HOLD_FAX,
  CH.CERT_HOLD_EMAIL,
  CH.CREATE_USER,
  CH.CREATE_DATE,
  CH.UPDATE_USER,
  CH.UPDATE_DATE,
  CH.SUPERSEDED_BY_CERT_HOLD_SEQNUM
FROM CERTIFICATE_HOLDER CH
WHERE CH.CERT_HOLD_SEQ_NUM = :certificateHolderId
-- NHibernate expects at most one row
```

Translation notes:
- The `SupersededByCertificateHolder` self-reference is lazy and is not joined; the superseding `CERTIFICATE_HOLDER` row is not eagerly loaded.

## Operations and processes

- [Other query providers](../operations/other-query-providers.md)

## Business rules

- [SD-BR-090 Superseded certificate holders excluded from search](../business-rules.md#sd-br-090-superseded-certificate-holders-excluded-from-search)

## Sources
- `Data/SAIF.Data/Queries/Policies/Certificates/CertificateHolderProvider.cs:21`