The Volcano model processes one row at a time. Vectorized execution processes batches with SIMD. Code generation fuses operators into compiled code. Here is how each works.
Iceberg's hidden partitioning separates physical layout from user queries using transform functions. Here is how it works and why it eliminates accidental full scans.
Query optimizers transform SQL into execution plans using rule-based rewrites, cost-based search, and adaptive runtime adjustments. Here is how each approach works.
Iceberg lets you change partition schemes without rewriting data. Here is how partition evolution works internally and why Hive-style partitioning could not do this.
