andygrove opened a new pull request, #703:
URL: https://github.com/apache/datafusion-comet/pull/703
## Which issue does this PR close?
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N/A
## Rationale for this change
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the issue then this section is not needed.
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Two performance optimizations for CASE expressions were recently merged into
DataFusion.
### Before
```
TPCDS Micro Benchmarks: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
----------------------------------------------------------------------------------------------------------------------------
case_when_column_or_null 953 1005
47 302.2 3.3 1.0X
case_when_column_or_null: Comet (Scan) 988 1011
20 291.5 3.4 1.0X
case_when_column_or_null: Comet (Scan, Exec) 1214 1237
24 237.2 4.2 0.8X
case_when_scalar 202 220
18 356.6 2.8 1.0X
case_when_scalar: Comet (Scan) 1852 1869
19 38.9 25.7 0.1X
case_when_scalar: Comet (Scan, Exec) 378 401
15 190.4 5.3 0.5X
```
### After
```
TPCDS Micro Benchmarks: Best Time(ms) Avg Time(ms)
Stdev(ms) Rate(M/s) Per Row(ns) Relative
----------------------------------------------------------------------------------------------------------------------------
case_when_column_or_null 942 989
41 305.6 3.3 1.0X
case_when_column_or_null: Comet (Scan) 988 1002
11 291.5 3.4 1.0X
case_when_column_or_null: Comet (Scan, Exec) 857 894
26 336.2 3.0 1.1X
case_when_scalar 202 214
8 356.9 2.8 1.0X
case_when_scalar: Comet (Scan) 1849 1861
16 38.9 25.7 0.1X
case_when_scalar: Comet (Scan, Exec) 201 223
15 357.5 2.8 1.0X
```
## What changes are included in this PR?
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sometimes worth providing a summary of the individual changes in this PR.
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Use newer DataFusion version
## How are these changes tested?
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Existing tests
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