method kysely.WheneableMergeQueryBuilder.prototype.whenNotMatchedBySource
import { kysely } from "https://dotland.deno.dev/x/kysely_postgrs_js_dialect@v0.27.3/mod.ts";
const { WheneableMergeQueryBuilder } = kysely;

Adds a simple when not matched by source clause to the query.

Supported in MS SQL Server.

Similar to {@link whenNotMatched}, but returns a MatchedThenableMergeQueryBuilder.