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Merge insert (upsert) records into a table

Performs a merge insert (upsert) operation on a table. This operation updates existing rows based on a matching column and inserts new rows that don't match. Returns the number of rows inserted and updated.

post/v1/table/{id}/merge_insert

Path parameters

idstring required

string identifier of an object in a namespace, following the Lance Namespace spec. When the value is equal to the delimiter, it represents the root namespace. For example, v1/namespace/./list performs a ListNamespace on the root namespace.

Query parameters

delimiterstring nullable

An opaque token that allows pagination for list APIs (e.g. ListNamespaces). For an initial client request for a list API, if the server cannot return all items in one response, or if there are more items than the pageSize specified in the client request, the server must return a nextPageToken in the response indicating there are more results available. After the initial request, the value of nextPageToken from each response must be used by the client as the pageToken parameter value for the next request. Clients must interpret either null, missing value or empty string value of nextPageToken from a server response as the end of the listing results.

An optional delimiter of the string identifier, following the Lance Namespace spec. When not specified, the . delimiter must be used.

onstring required

Column name to use for matching rows (required)

when_matched_update_allboolean

Update all columns when rows match

when_matched_update_all_filtstring

The row is updated (similar to UpdateAll) only for rows where the SQL expression evaluates to true

when_not_matched_insert_allboolean

Insert all columns when rows don't match

when_not_matched_by_source_deleteboolean

Delete all rows from target table that don't match a row in the source table

when_not_matched_by_source_delete_filtstring

Delete rows from the target table if there is no match AND the SQL expression evaluates to true

Response

Result of merge insert operation

num_updated_rowsinteger

Number of rows updated

num_inserted_rowsinteger

Number of rows inserted

num_deleted_rowsinteger

Number of rows deleted (typically 0 for merge insert)

versioninteger

The commit version associated with the operation

Example response

{
  "num_inserted_rows": 0,
  "num_updated_rows": 0,
  "num_deleted_rows": 0,
  "version": 0
}

Changes