samuelcolvin commented on code in PR #11896:
URL: https://github.com/apache/datafusion/pull/11896#discussion_r1710452950


##########
datafusion/sqllogictest/test_files/struct.slt:
##########
@@ -236,3 +233,44 @@ query ?
 select {'animal': {'cat': 1, 'dog': 2, 'bird': {'parrot': 3, 'canary': 1}}, 
'genre': {'fiction': ['mystery', 'sci-fi', 'fantasy'], 'non-fiction': 
{'biography': 5, 'history': 7, 'science': {'physics': 2, 'biology': 3}}}, 
'vehicle': {'car': {'sedan': 4, 'suv': 2}, 'bicycle': 3, 'boat': ['sailboat', 
'motorboat']}, 'weather': {'sunny': True, 'temperature': 25.5, 'wind': 
{'speed': 10, 'direction': 'NW'}}};
 ----
 {animal: {cat: 1, dog: 2, bird: {parrot: 3, canary: 1}}, genre: {fiction: 
[mystery, sci-fi, fantasy], non-fiction: {biography: 5, history: 7, science: 
{physics: 2, biology: 3}}}, vehicle: {car: {sedan: 4, suv: 2}, bicycle: 3, 
boat: [sailboat, motorboat]}, weather: {sunny: true, temperature: 25.5, wind: 
{speed: 10, direction: NW}}}
+
+# test tuple as struct
+query B
+select ('x', 'y') = ('x', 'y');
+----
+true
+
+query B
+select ('x', 'y') = ('y', 'x');
+----
+false
+
+query error DataFusion error: Error during planning: Cannot infer common 
argument type for comparison operation Struct.*
+select ('x', 'y') = ('x', 'y', 'z');
+
+query B
+select ('x', 'y') IN (('x', 'y'));
+----
+true
+
+query B
+select ('x', 'y') IN (('x', 'y'), ('y', 'x'));
+----
+true
+
+query I
+select a from values where (a, c) = (1, 'a');
+----
+1
+
+query I
+select a from values where (a, c) IN ((1, 'a'), (2, 'b'));

Review Comment:
   this will fail



##########
datafusion/sqllogictest/test_files/struct.slt:
##########
@@ -236,3 +233,44 @@ query ?
 select {'animal': {'cat': 1, 'dog': 2, 'bird': {'parrot': 3, 'canary': 1}}, 
'genre': {'fiction': ['mystery', 'sci-fi', 'fantasy'], 'non-fiction': 
{'biography': 5, 'history': 7, 'science': {'physics': 2, 'biology': 3}}}, 
'vehicle': {'car': {'sedan': 4, 'suv': 2}, 'bicycle': 3, 'boat': ['sailboat', 
'motorboat']}, 'weather': {'sunny': True, 'temperature': 25.5, 'wind': 
{'speed': 10, 'direction': 'NW'}}};
 ----
 {animal: {cat: 1, dog: 2, bird: {parrot: 3, canary: 1}}, genre: {fiction: 
[mystery, sci-fi, fantasy], non-fiction: {biography: 5, history: 7, science: 
{physics: 2, biology: 3}}}, vehicle: {car: {sedan: 4, suv: 2}, bicycle: 3, 
boat: [sailboat, motorboat]}, weather: {sunny: true, temperature: 25.5, wind: 
{speed: 10, direction: NW}}}
+
+# test tuple as struct
+query B
+select ('x', 'y') = ('x', 'y');
+----
+true
+
+query B
+select ('x', 'y') = ('y', 'x');
+----
+false
+
+query error DataFusion error: Error during planning: Cannot infer common 
argument type for comparison operation Struct.*
+select ('x', 'y') = ('x', 'y', 'z');
+
+query B
+select ('x', 'y') IN (('x', 'y'));
+----
+true
+
+query B
+select ('x', 'y') IN (('x', 'y'), ('y', 'x'));

Review Comment:
   this will fail



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