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Luca Martial 2026-05-14 09:38:48 -07:00
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docs-site/content/docs/integrations/primary-sources.mdx
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@ -154,9 +154,9 @@ For multiple schemas:
| Primary keys | Yes | Via table constraints |
| Foreign keys | No | Not available in Snowflake |
| Row count estimates | Yes | From `INFORMATION_SCHEMA.TABLES.ROW_COUNT` |
| Column statistics | No | — |
| Column statistics | No | - |
| Query history | Yes | Via `SNOWFLAKE.ACCOUNT_USAGE.QUERY_HISTORY` when enabled |
| Table sampling | Yes | — |
| Table sampling | Yes | - |
### Query history
@ -228,12 +228,12 @@ mapping metadata. The BigQuery connector still authenticates with the
| Feature | Supported | Notes |
|---------|-----------|-------|
| Tables & views | Yes | Including materialized views and external tables |
| Primary keys | No | — |
| Primary keys | No | - |
| Foreign keys | No | Not available in BigQuery |
| Row count estimates | Yes | From table metadata |
| Column statistics | No | — |
| Column statistics | No | - |
| Query history | Yes | Via region-scoped `INFORMATION_SCHEMA.JOBS_BY_PROJECT` when enabled |
| Table sampling | Yes | — |
| Table sampling | Yes | - |
### Query history
@ -307,9 +307,9 @@ connections:
| Primary keys | Yes | Via `system.columns` |
| Foreign keys | No | Not a ClickHouse concept |
| Row count estimates | Yes | Via `system.parts` aggregation |
| Column statistics | No | — |
| Query history | No | — |
| Table sampling | Yes | — |
| Column statistics | No | - |
| Query history | No | - |
| Table sampling | Yes | - |
### Dialect notes
@ -364,8 +364,8 @@ connections:
| Primary keys | Yes | Via `KEY_COLUMN_USAGE` |
| Foreign keys | Yes | Via `REFERENTIAL_CONSTRAINTS` |
| Row count estimates | Yes | From `TABLE_ROWS` (InnoDB estimate) |
| Column statistics | No | — |
| Query history | No | — |
| Column statistics | No | - |
| Query history | No | - |
| Table sampling | Yes | Uses `RAND()` filter |
### Dialect notes
@ -430,10 +430,10 @@ For multiple schemas:
| Primary keys | Yes | Via `TABLE_CONSTRAINTS` and `KEY_COLUMN_USAGE` |
| Foreign keys | Yes | Via `REFERENTIAL_CONSTRAINTS` |
| Row count estimates | Yes | Via `sys.dm_db_partition_stats` |
| Column statistics | No | — |
| Query history | No | — |
| Table sampling | Yes | — |
| Nested analysis | No | — |
| Column statistics | No | - |
| Query history | No | - |
| Table sampling | Yes | - |
| Nested analysis | No | - |
### Dialect notes
@ -478,7 +478,7 @@ url: sqlite:///path/to/db.sqlite
### Authentication
No authentication required — SQLite is file-based. The file must be readable by the process running KTX.
No authentication required - SQLite is file-based. The file must be readable by the process running KTX.
### Features
@ -488,10 +488,10 @@ No authentication required — SQLite is file-based. The file must be readable b
| Primary keys | Yes | Via `PRAGMA table_info()` |
| Foreign keys | Yes | Via `PRAGMA foreign_key_list()` (requires `PRAGMA foreign_keys = ON`) |
| Row count estimates | Yes | Exact count via `SELECT COUNT(*)` |
| Column statistics | No | — |
| Query history | No | — |
| Table sampling | Yes | — |
| Nested analysis | No | — |
| Column statistics | No | - |
| Query history | No | - |
| Table sampling | Yes | - |
| Nested analysis | No | - |
### Dialect notes