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`indexStats` still referenced UUID even though in https://github.com/lancedb/lancedb/pull/1702 we changed it to take name instead.
74 lines
2.2 KiB
Markdown
74 lines
2.2 KiB
Markdown
[vectordb](../README.md) / [Exports](../modules.md) / MergeInsertArgs
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# Interface: MergeInsertArgs
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## Table of contents
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### Properties
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- [whenMatchedUpdateAll](MergeInsertArgs.md#whenmatchedupdateall)
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- [whenNotMatchedBySourceDelete](MergeInsertArgs.md#whennotmatchedbysourcedelete)
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- [whenNotMatchedInsertAll](MergeInsertArgs.md#whennotmatchedinsertall)
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## Properties
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### whenMatchedUpdateAll
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• `Optional` **whenMatchedUpdateAll**: `string` \| `boolean`
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If true then rows that exist in both the source table (new data) and
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the target table (old data) will be updated, replacing the old row
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with the corresponding matching row.
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If there are multiple matches then the behavior is undefined.
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Currently this causes multiple copies of the row to be created
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but that behavior is subject to change.
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Optionally, a filter can be specified. This should be an SQL
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filter where fields with the prefix "target." refer to fields
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in the target table (old data) and fields with the prefix
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"source." refer to fields in the source table (new data). For
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example, the filter "target.lastUpdated < source.lastUpdated" will
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only update matched rows when the incoming `lastUpdated` value is
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newer.
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Rows that do not match the filter will not be updated. Rows that
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do not match the filter do become "not matched" rows.
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#### Defined in
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[index.ts:690](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L690)
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___
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### whenNotMatchedBySourceDelete
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• `Optional` **whenNotMatchedBySourceDelete**: `string` \| `boolean`
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If true then rows that exist only in the target table (old data)
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will be deleted.
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If this is a string then it will be treated as an SQL filter and
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only rows that both do not match any row in the source table and
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match the given filter will be deleted.
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This can be used to replace a selection of existing data with
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new data.
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#### Defined in
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[index.ts:707](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L707)
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___
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### whenNotMatchedInsertAll
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• `Optional` **whenNotMatchedInsertAll**: `boolean`
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If true then rows that exist only in the source table (new data)
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will be inserted into the target table.
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#### Defined in
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[index.ts:695](https://github.com/lancedb/lancedb/blob/92179835/node/src/index.ts#L695)
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