yabola commented on PR #9683:
URL: https://github.com/apache/iceberg/pull/9683#issuecomment-1933402920
I have an example of performance comparison.
Table : `p_lineorder_ice` has partition column `LO_ORDERDATE`.
1. pushdown partition column
test sql: select * from ice.ssb10.p_lineorder_ice where LO_ORDERDATE like
'%01'
before this pr:
<img width="425" alt="image"
src="https://github.com/apache/iceberg/assets/31469905/3efaa13b-ffa3-4a53-9963-19b8e7572734";>
after this pr:
<img width="362" alt="image"
src="https://github.com/apache/iceberg/assets/31469905/24bc7dae-a27c-477a-b30c-6d2bee8d516b";>
2. pushdown agg column
test sql: select count(1) from ice.ssb10.p_lineorder_ice where
LO_ORDERDATE like '%01';
before this PR:
<img width="439" alt="image"
src="https://github.com/apache/iceberg/assets/31469905/306be162-04c2-4608-8c23-cae883039ba7";>
after this PR:
<img width="379" alt="image"
src="https://github.com/apache/iceberg/assets/31469905/121582aa-dd29-476e-8611-6dc5e37dbaca";>
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