feat(duckdb): implement argmin and argmax

cpcloud · cpcloud · commit abf03f108570 · 2022-08-20T07:19:21.000-05:00
diff --git a/ibis/backends/duckdb/registry.py b/ibis/backends/duckdb/registry.py
@@ -229,6 +229,8 @@ def _struct_column(t, expr):
         ops.Arbitrary: _arbitrary,
         ops.GroupConcat: _string_agg,
         ops.StructColumn: _struct_column,
+        ops.ArgMin: reduction(sa.func.min_by),
+        ops.ArgMax: reduction(sa.func.max_by),
     }
 )
 

Original file line number	Diff line number	Diff line change
`@@ -229,6 +229,8 @@ def _struct_column(t, expr):`
`229`	`229`	`ops.Arbitrary: _arbitrary,`
`230`	`230`	`ops.GroupConcat: _string_agg,`
`231`	`231`	`ops.StructColumn: _struct_column,`
	`232`	`+ ops.ArgMin: reduction(sa.func.min_by),`
	`233`	`+ ops.ArgMax: reduction(sa.func.max_by),`
`232`	`234`	`}`
`233`	`235`	`)`
`234`	`236`