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SQL-182: OutputDocumentQueryProvider.GetAccountNumber

This statement is a read operation invoked through ORM (NHibernate LINQ). Executed by OutputDocumentQueryProvider.GetAccountNumber.

Classification

Field Value
SQL ID SQL-182
Operation type Read
Execution method ORM (NHibernate LINQ)
Database Oracle*
Schema [unqualified]**
Command type N/A (ORM-generated)
Business object OutputDocumentQueryProvider
Criteria property N/A — ORM
Lifecycle method GetAccountNumber

Parameters

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

Tables

Table Access Columns used
POLICY SELECT 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

LINQ statement

Source: Data/SAIF.Data/Queries/OutputDocuments/OutputDocumentQueryProvider.cs:35-36.

public string GetAccountNumber(long policyNumber)
{
    return Factory.GetRepository<Policy>()
        .Query().FirstOrDefault(p => p.PolicyNumber == policyNumber)?.AccountNumber;
}

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.

-- Inferred from LINQ (NHibernate mapping translation); not concrete SQL
SELECT * FROM (
  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_NUM = :policyNumber
) WHERE ROWNUM <= 1

Translation notes: - There is no Select projection. FirstOrDefault materializes the entire Policy entity, and ?.AccountNumber (ACCOUNT_NUM) is read in memory. - OFFICE_CODE is mapped both as a property and as the References(Office) FK; it is selected once.

Operations and processes

Business rules

Sources

  • Data/SAIF.Data/Queries/OutputDocuments/OutputDocumentQueryProvider.cs:35