HCK-8816: queries optimization

[chulanovskyi-bs]

HCK-8816 [SQLServer] RE from instance: Filter queries based on user selection

Technical details

• the following queries have been optimized and now include the WHERE clause specifying the previously selected schemas and tables (expand databaseService.js diff to investigate the highlighted part):
  • getTableForeignKeys
  • getDatabaseIndexes (exception: adjusted the LEFT JOIN with schemas/table names)
  • getSpatialIndexes
  • getFullTextIndexes
  • getDatabaseMemoryOptimizedTables (exception: querying only the is_memory_optimized tables)
  • getDatabaseCheckConstraints
  • getTableKeyConstraints
  • getDatabaseXmlSchemaCollection
• refactored connectionState into a ClientManager class
• resolved legacy sonarlint remarks

Comparison metrics between WHERE and WITH approaches

WHERE - https://www.brentozar.com/pastetheplan/?id=S1HElHm7yx

SELECT ...
Cached plan size	312 KB
Estimated Operator Cost	0 (0%)
Estimated Subtree Cost	0.110886
Estimated Number of Rows	7.83363

---

WITH - https://www.brentozar.com/pastetheplan/?id=Hkon1BX7Jx

WITH ...
Cached plan size	288 KB
Estimated Operator Cost	0 (0%)
Estimated Subtree Cost	0.155635
Estimated Number of Rows	7.83363

[chulanovskyi-bs]

@thomas-jakemeyn @bigorn0 Finalized the PR (at last 😅). The tests are passing, please check and proceed with the merge if ok

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud