Data-Engineering
Polars Nested JSON 實戰：Struct、List、NDJSON 與 Schema Drift
·7 分鐘·
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Python
Polars
NDJSON
Struct
List
Schema-Drift
Data-Engineering
DuckDB MERGE 實戰：增量匯入、去重與可重跑 ETL
·6 分鐘·
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Python
DuckDB
SQL
Merge
ETL
Data-Engineering
Idempotency
Polars Rolling / Dynamic Windows：時間窗聚合、邊界語意與 QA
·6 分鐘·
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Python
Polars
Time-Series
Rolling-Window
Dynamic-Window
Data-Engineering
Testing
Polars LazyFrame 最佳化：Pushdown、Streaming 與 Explain
·6 分鐘·
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Python
Polars
LazyFrame
Query Optimization
Parquet
Streaming
Data-Engineering
DuckDB ASOF Join 實戰：時間序列對齊與最近事件查詢
·7 分鐘·
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Python
DuckDB
SQL
ASOF Join
Time-Series
Temporal Data
Data-Engineering
Python JSON 實戰：解析、序列化、自訂型別與大型資料
·7 分鐘·
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Python
Json
Serialization
Standard-Library
JSON Lines
Data-Engineering
Developer-Tools
DuckDB 遠端 Parquet 實戰：S3/R2、httpfs、Secrets 與 Pushdown
·7 分鐘·
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Python
DuckDB
Parquet
S3
Cloudflare R2
Httpfs
Data-Engineering
Python fsspec 實戰：統一讀寫本機、S3、HTTP 與資料管線路徑
·7 分鐘·
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Python
Fsspec
Filesystem
S3
Data-Engineering
ETL
Python PyArrow 實戰：Parquet、Schema 與跨工具資料交換
·8 分鐘·
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Python
PyArrow
Apache Arrow
Parquet
Data-Engineering
ETL