SQL-145: EdiQueryProvider.GetBillBySegmentCount¶

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

Classification¶

Field	Value
SQL ID	SQL-145
Operation type	Read
Execution method	ORM (NHibernate LINQ)
Database	Oracle*
Schema	[unqualified]**
Command type	N/A (ORM-generated)
Business object	`EdiQueryProvider`
Criteria property	N/A — ORM
Lifecycle method	`GetBillBySegmentCount`

Parameters¶

Parameter	Direction	Type	Max length	Description
`:billReport`	Input	BillReport	N/A	Method argument; bound as its identifier
`:segmentCount`	Input	long	N/A	Method argument

Tables¶

Table	Access	Columns used
EDI_BILL	SELECT	`EDI_BILL_SEQ_NUM`, `UPDATE_NUM`, `BILL_ID`, `CLAIM_ID`, `SAIF_CLAIM_NUM`, `POLICY_NUM`, `EDI_BILL_CLM_SEGMENT_ID`, `UPDATE_DATE`, `UPDATE_USER`, `EDI_BILL_REPORT_SEQ_NUM`

LINQ statement¶

Source: Data/SAIF.Data/Queries/Edi/EdiQueryProvider.cs:33. The repository is obtained at Data/SAIF.Data/Queries/Edi/EdiQueryProvider.cs:16.

// Data/SAIF.Data/Queries/Edi/EdiQueryProvider.cs:16
_billRepository = Factory.GetRepository<Bill>().Query();

// Data/SAIF.Data/Queries/Edi/EdiQueryProvider.cs:33
return _billRepository.OrderByDescending(x => x.BillClaimSegmentId).FirstOrDefault(x => x.BillReport  == billReport && x.BillClaimSegmentId < segmentCount);

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
    EB.EDI_BILL_SEQ_NUM,
    EB.UPDATE_NUM,
    EB.BILL_ID,
    EB.CLAIM_ID,
    EB.SAIF_CLAIM_NUM,
    EB.POLICY_NUM,
    EB.EDI_BILL_CLM_SEGMENT_ID,
    EB.UPDATE_DATE,
    EB.UPDATE_USER,
    EB.EDI_BILL_REPORT_SEQ_NUM
  FROM EDI_BILL EB
  WHERE EB.EDI_BILL_REPORT_SEQ_NUM = :billReport
    AND EB.EDI_BILL_CLM_SEGMENT_ID < :segmentCount
  ORDER BY EB.EDI_BILL_CLM_SEGMENT_ID DESC
)
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). - The OrderByDescending comes before the predicate-bearing FirstOrDefault(pred). NHibernate folds the predicate into WHERE and keeps the ordering.

Operations and processes¶

Other query providers

Sources¶

Data/SAIF.Data/Queries/Edi/EdiQueryProvider.cs:33