83 lines
1.7 KiB
Markdown
83 lines
1.7 KiB
Markdown
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# CLEAR KB
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Remove knowledge bases from the current session.
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## Syntax
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```basic
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CLEAR KB "collection_name" ' Remove specific collection
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CLEAR KB ALL ' Remove all collections
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```
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## Parameters
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| Parameter | Type | Description |
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|-----------|------|-------------|
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| `collection_name` | String | Name of KB to remove (optional) |
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| `ALL` | Keyword | Removes all active KBs |
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## Description
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`CLEAR KB` removes previously loaded knowledge bases from the session's context. This frees memory and ensures subsequent queries don't search unwanted collections.
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## Examples
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### Clear Specific KB
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```basic
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USE KB "policies"
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USE KB "products"
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' Later, remove just policies
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CLEAR KB "policies"
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' Only products remains active
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```
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### Clear All KBs
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```basic
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USE KB "hr-docs"
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USE KB "it-docs"
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USE KB "finance"
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CLEAR KB ALL
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' All collections removed
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```
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### Context Switching
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```basic
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' Support flow
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USE KB "troubleshooting"
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USE KB "known-issues"
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' ... handle support ...
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' Switch to sales
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CLEAR KB ALL
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USE KB "products"
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USE KB "pricing"
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```
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## Return Value
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Returns `true` if cleared successfully, `false` if KB wasn't loaded.
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## Best Practices
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| Do | Don't |
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|----|-------|
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| Clear when switching topics | Leave large KBs active unnecessarily |
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| Clear before loading new context | Assume collections auto-clear |
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| Use `ALL` for clean slate | Clear one-by-one when `ALL` works |
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## Session Scope
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- Only affects current session
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- Other sessions keep their KBs
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- KBs remain in database for future use
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- Can reload cleared KBs anytime
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## See Also
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- [USE KB](./keyword-use-kb.md) - Load knowledge bases
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- [Knowledge Base System](../chapter-03/README.md) - Technical details
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