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DuckDB 2.0 ドキュメント 全文検索
Results of 1 - 1 of about 1 for SCDs (0.000 sec.)
- Merge Statement for SCD Type 2 9414
- This is a practical, step-by-step guide to using DuckDB's MERGE statement (introduced in v1.4.0) to perform upserts and build Slowly Changing Dimension Type 2 (SCD Type 2) tables . Type 2 SCDs let you keep full historical versions of record
...hile clearly identifying the current version, perfect for audit trails, data warehousing, and analytical workloads. Type 2 SCDs are practical when you want to know previous values of your primary key data, when it changed and for how long it was in a...xamine a Single Duck To better illustrate the concept, let's examine a single duck, to drive home the value add for type 2 SCDs. If we select from the master table after running the merge statement and the post update insert statement, we can see the... - https://man.mtool.work/duckdb/2.0/guides/sql_features/merge.html
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DuckDB 2.0 Documentation / man.mtool.work