feat: implement n_unique for DuckDB
#1762
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MarcoGorelli
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FBruzzesi
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| return FunctionExpression( | ||
| "array_unique", FunctionExpression("array_agg", _input) | ||
| ) + FunctionExpression( | ||
| "max", | ||
| CaseExpression( | ||
| condition=_input.isnotnull(), value=ConstantExpression(0) | ||
| ).otherwise(ConstantExpression(1)), | ||
| ) |
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Wonderful! I think we can reuse this trick for spark 🚀
FBruzzesi
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Jan 8, 2025
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