---
title: "SQL-262: Retrieve Policy"
summary: Read operation against Policy via NHibernate ORM.
status: draft
owner: SAIF Doc Gen
last_reviewed: 2026-09-24
library: SAIF.Services
reference_type: package
---

# SQL-262: Retrieve Policy

This statement reads related `POLICY` rows for a given policy — either policies that share its relationship-policy chain (`GetRelationshipPolicies`) or policies that share its experience-rating account (`GetExperienceRatingPolicies`). Each variant includes a correlated scalar subquery that re-reads the source policy's own relationship/rate-account link. It is issued via NHibernate LINQ from `Services/SAIF.Services/Policies/PolicyAssociation/PolicyAssociationService.cs`.

## Classification

| Field | Value |
| --- | --- |
| **SQL ID** | SQL-262 |
| **Operation type** | Read |
| **Execution method** | ORM (NHibernate LINQ) |
| **Database** | Oracle |
| **Schema** | [unqualified]** |
| **Command type** | N/A (ORM-generated) |
| **Business object** | `PolicyAssociationService` |
| **Criteria property** | N/A — ORM |
| **Lifecycle method** | `GetRelationshipPolicies`, `GetExperienceRatingPolicies` |

## Parameters

| Parameter | Direction | Type | Max length | Description |
| --- | --- | --- | --- | --- |
| `:policyNumber` | Input | long | N/A | Policy number, bound twice per statement (outer predicate and correlated subquery) |

## Tables

| Table | Access | Columns used |
| --- | --- | --- |
| [POLICY](../database-tables.md#policy) | SELECT (outer) + SELECT (scalar subquery, alias P2) | Outer: `POLICY_NUM`, `POLICY_NAME`, `LEGAL_NAME`, `SECURE_POLICY_CODE`, `OFFICE_CODE`, `ACCOUNT_NUM`, `POLICY_STATUS_CODE`, `MARKET_TYPE_CODE`, `POLICY_RELATIONSHIP_POLICY_NUM`, `POLICY_RELATIONSHIP_CODE`, `customer_service_team_code`, `ENTITY_CODE`, `TRADING_SEQ_NUM`, `RATE_ACCOUNT`, `AGENT_NUM`; subquery: `POLICY_NUM`, `POLICY_STATUS_CODE`, `POLICY_RELATIONSHIP_POLICY_NUM` / `RATE_ACCOUNT` |

## LINQ statement

Source: `Services/SAIF.Services/Policies/PolicyAssociation/PolicyAssociationService.cs:225`

```csharp
// Services/SAIF.Services/Policies/PolicyAssociation/PolicyAssociationService.cs:225-234
var relationshipPolicies = unitOfWork.GetRepository<Policy>()
    .Query()
    .Where(x => (x.RelationshipPolicy != null && x.RelationshipPolicy.PolicyNumber == policyNumber && x.Status.Code != "PC")
             || (x.RelationshipPolicy != null && x.Status.Code != "PC" && x.RelationshipPolicy.PolicyNumber ==
                 unitOfWork.GetRepository<Policy>()
                     .Query()
                     .Where(p => (p.PolicyNumber == policyNumber && p.Status.Code != "PC"))
                     .Select(p => p.RelationshipPolicy.PolicyNumber)
                     .FirstOrDefault())
    ).ToList();

// Services/SAIF.Services/Policies/PolicyAssociation/PolicyAssociationService.cs:242-251
var experienceRatingPolicies = unitOfWork.GetRepository<Policy>()
    .Query()
    .Where(x => (x.RateAccount != null && x.RateAccount.PolicyNumber == policyNumber && x.Status.Code != "PC") ||
                (x.RateAccount != null && x.Status.Code != "PC" && x.RateAccount ==
                 unitOfWork.GetRepository<Policy>()
                     .Query()
                     .Where(p => (p.PolicyNumber == policyNumber && p.Status.Code != "PC"))
                     .Select(p => p.RateAccount)
                     .FirstOrDefault())
    ).ToList();
```

## 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
-- GetRelationshipPolicies (L225; nested subquery L229)
SELECT
  P.POLICY_NUM,
  P.POLICY_NAME,
  P.LEGAL_NAME,
  P.SECURE_POLICY_CODE,
  P.OFFICE_CODE,
  P.ACCOUNT_NUM,
  P.POLICY_STATUS_CODE,
  P.MARKET_TYPE_CODE,
  P.POLICY_RELATIONSHIP_POLICY_NUM,
  P.POLICY_RELATIONSHIP_CODE,
  P.customer_service_team_code,
  P.ENTITY_CODE,
  P.TRADING_SEQ_NUM,
  P.RATE_ACCOUNT,
  P.AGENT_NUM
FROM POLICY P
WHERE (P.POLICY_RELATIONSHIP_POLICY_NUM IS NOT NULL
    AND P.POLICY_RELATIONSHIP_POLICY_NUM = :policyNumber
    AND P.POLICY_STATUS_CODE <> 'PC')
  OR (P.POLICY_RELATIONSHIP_POLICY_NUM IS NOT NULL
    AND P.POLICY_STATUS_CODE <> 'PC'
    AND P.POLICY_RELATIONSHIP_POLICY_NUM = (
      SELECT *
      FROM (
        SELECT P2.POLICY_RELATIONSHIP_POLICY_NUM
        FROM POLICY P2
        WHERE P2.POLICY_NUM = :policyNumber
          AND P2.POLICY_STATUS_CODE <> 'PC'
      )
      WHERE ROWNUM <= 1
    ))

-- GetExperienceRatingPolicies (L242; nested subquery L246)
SELECT
  P.POLICY_NUM,
  P.POLICY_NAME,
  P.LEGAL_NAME,
  P.SECURE_POLICY_CODE,
  P.OFFICE_CODE,
  P.ACCOUNT_NUM,
  P.POLICY_STATUS_CODE,
  P.MARKET_TYPE_CODE,
  P.POLICY_RELATIONSHIP_POLICY_NUM,
  P.POLICY_RELATIONSHIP_CODE,
  P.customer_service_team_code,
  P.ENTITY_CODE,
  P.TRADING_SEQ_NUM,
  P.RATE_ACCOUNT,
  P.AGENT_NUM
FROM POLICY P
WHERE (P.RATE_ACCOUNT IS NOT NULL
    AND P.RATE_ACCOUNT = :policyNumber
    AND P.POLICY_STATUS_CODE <> 'PC')
  OR (P.RATE_ACCOUNT IS NOT NULL
    AND P.POLICY_STATUS_CODE <> 'PC'
    AND P.RATE_ACCOUNT = (
      SELECT *
      FROM (
        SELECT P2.RATE_ACCOUNT
        FROM POLICY P2
        WHERE P2.POLICY_NUM = :policyNumber
          AND P2.POLICY_STATUS_CODE <> 'PC'
      )
      WHERE ROWNUM <= 1
    ))
```

Translation notes:
- The nested `...Select(...).FirstOrDefault()` inside the predicate references no outer lambda parameter, but it is a queryable expression, so NHibernate translates it as a scalar subquery (not client-evaluated). Rendered with the Oracle10 `ROWNUM` row limit; exact subquery shape is inferred.
- `.ToList()` is the materialization point; `Mapper.Map` runs in memory.
- `OFFICE_CODE` is mapped both as `Map(OfficeCode)` (`PolicyMap.cs:18`) and `References(Office)` (`PolicyMap.cs:26`); it is selected once. All other `References` contribute their FK column only; `HasMany` collections (`Periods`, `DbaNames`, `OscPolicies`, `SubmissionPolicies`, `TeamFunctions`, `BusinessAffiliates`) are lazy and not selected.

## Operations and processes
- PolicyAssociationService.GetExperienceRatingPolicies — see [Operations and processes](../operations-processes.md)
- PolicyAssociationService.GetRelationshipPolicies — see [Operations and processes](../operations-processes.md)

## Sources
- `Services/SAIF.Services/Policies/PolicyAssociation/PolicyAssociationService.cs (L225, L229, L242, L246)`