Opened 17 years ago
Closed 17 years ago
#290 closed enhancement (fixed)
ODBC driver: significant performance improvement on selecting geometries
| Reported by: | danstoica | Owned by: | danstoica |
|---|---|---|---|
| Priority: | major | Milestone: | 3.3.1 |
| Component: | ODBC Provider | Version: | 3.2.0 |
| Severity: | 3 | Keywords: | |
| Cc: | External ID: | 1041996 |
Description
ODBCDR: Currently the geometries are retrieved as BLOBs ("image"), using the specialized ODBCGetData(). This approach is slow, about 2000 geometries/sec.
During the implementation of the SQLServerSpatial provider (against MS SQL Server 2008) a hybrid technique for retrieving the geometries has been developed and tested, allowing a performance boost of about 10 times. Ported this enhancement to ODBCDR.
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