should be it

external/duckdb/test/sql/function/nested/array_extract_unnamed_struct.test

@@ -0,0 +1,48 @@
+# name: test/sql/function/nested/array_extract_unnamed_struct.test
+# description: Test array extract on unnamed structs
+# group: [nested]
+
+statement error
+SELECT (ROW(42, 84))['element']
+----
+cannot be used on an unnamed struct
+
+query I
+SELECT (ROW(42, 84))[1]
+----
+42
+
+query I
+SELECT (ROW(42, 84))[2]
+----
+84
+
+query II
+SELECT UNNEST(ROW(42, 84))
+----
+42	84
+
+statement error
+SELECT (ROW(42, 84))[0]
+----
+out of range
+
+statement error
+SELECT (ROW(42, 84))[9999]
+----
+out of range
+
+statement error
+SELECT (ROW(42, 84))[-1]
+----
+out of range
+
+statement error
+SELECT (ROW(42, 84))[9223372036854775807]
+----
+out of range
+
+statement error
+SELECT (ROW(42, 84))[(-9223372036854775808)::BIGINT]
+----
+out of range

external/duckdb/test/sql/function/nested/test_issue_5437.test

@@ -0,0 +1,10 @@
+# name: test/sql/function/nested/test_issue_5437.test
+# description: Issue #5437: Python crashes with struct_insert
+# group: [nested]
+
+statement ok
+with data as (
+select * from (VALUES ('Amsterdam', {'x': 1, 'y': 2, 'z': 3}), ('London', {'x': 4, 'y': 5, 'z': 6})) Cities(Name, Id)
+)
+select *, struct_insert(Id, d := 4)
+from data

external/duckdb/test/sql/function/nested/test_struct_insert.test

@@ -0,0 +1,65 @@
+# name: test/sql/function/nested/test_struct_insert.test
+# description: Test the struct_insert function.
+# group: [nested]
+
+# Test basic insertion into a STRUCT.
+query T
+SELECT struct_insert ({a: 1, b: 2}, c := 3);
+----
+{'a': 1, 'b': 2, 'c': 3}
+
+# Insertion into a STRUCT generated by a row of data.
+query T
+WITH data AS (SELECT 1 AS a, 2 AS b, 3 AS c)
+SELECT struct_insert (data, d := 4) FROM data;
+----
+{'a': 1, 'b': 2, 'c': 3, 'd': 4}
+
+# Insertion of a nested STRUCT into an existing STRUCT.
+query T
+SELECT struct_insert({'a': 1, 'b': 'abc', 'c': true}, d := {'a': 'new stuff'});
+----
+{'a': 1, 'b': abc, 'c': true, 'd': {'a': new stuff}}
+
+# Test incorrect usage.
+statement error
+SELECT struct_insert();
+----
+<REGEX>:Invalid Input Error.*Missing required arguments for struct_insert function.*
+
+statement error
+SELECT struct_insert({a: 1, b: 2});
+----
+<REGEX>:Invalid Input Error.*insert nothing into a STRUCT.*
+
+statement error
+SELECT struct_insert(123, a := 1);
+----
+<REGEX>:Invalid Input Error.*The first argument to struct_insert must be a STRUCT.*
+
+statement error
+SELECT struct_insert({a: 1, b: 2}, a := 2);
+----
+<REGEX>:Binder Error.*Duplicate struct entry name.*
+
+# Test inserting NULL as the default value.
+
+statement ok
+CREATE TABLE tbl (col STRUCT(i INT));
+
+statement ok
+INSERT INTO tbl SELECT {'i': range} FROM range(3);
+
+query I
+SELECT struct_insert(col, a := col.i + 1, b := NULL::VARCHAR) FROM tbl ORDER BY ALL;
+----
+{'i': 0, 'a': 1, 'b': NULL}
+{'i': 1, 'a': 2, 'b': NULL}
+{'i': 2, 'a': 3, 'b': NULL}
+
+query I
+SELECT struct_insert(col, a := NULL, b := NULL::VARCHAR, c := [NULL]) FROM tbl ORDER BY ALL;
+----
+{'i': 0, 'a': NULL, 'b': NULL, 'c': [NULL]}
+{'i': 1, 'a': NULL, 'b': NULL, 'c': [NULL]}
+{'i': 2, 'a': NULL, 'b': NULL, 'c': [NULL]}

external/duckdb/test/sql/function/nested/test_struct_update.test

@@ -0,0 +1,134 @@
+# name: test/sql/function/nested/test_struct_update.test
+# description: Test the struct_update function.
+# group: [nested]
+
+statement ok
+pragma enable_verification
+
+# Test basic insertion into a STRUCT.
+query T
+SELECT struct_update ({a: 1, b: 2}, c := 3);
+----
+{'a': 1, 'b': 2, 'c': 3}
+
+# Insertion into a STRUCT generated by a row of data.
+query T
+WITH data AS (SELECT 1 AS a, 2 AS b, 3 AS c)
+SELECT struct_update (data, d := 4) FROM data;
+----
+{'a': 1, 'b': 2, 'c': 3, 'd': 4}
+
+# Insertion of a nested STRUCT into an existing STRUCT.
+query T
+SELECT struct_update({'a': 1, 'b': 'abc', 'c': true}, d := {'a': 'new stuff'});
+----
+{'a': 1, 'b': abc, 'c': true, 'd': {'a': new stuff}}
+
+# Test incorrect usage.
+statement error
+SELECT struct_update();
+----
+<REGEX>:Invalid Input Error.*Missing required arguments for struct_update function.*
+
+statement error
+SELECT struct_update({a: 1, b: 2});
+----
+<REGEX>:Invalid Input Error.*update nothing into a STRUCT.*
+
+statement error
+SELECT struct_update(123, a := 1);
+----
+<REGEX>:Invalid Input Error.*The first argument to struct_update must be a STRUCT.*
+
+statement error
+SELECT struct_update({a: 1, b: 2}, a := 2, a := 3);
+----
+<REGEX>:Invalid Input Error.*Duplicate named argument .*
+
+# Test changing a value in a STRUCT field
+query T
+SELECT struct_update({a: 1, b: 2}, a := 3);
+----
+{'a': 3, 'b': 2}
+
+# Test changing the type and value of a STRUCT field
+query T
+SELECT struct_update({a: 1, b: 2}, a := 'c');
+----
+{'a': c, 'b': 2}
+
+# Test updating and adding a field to a STRUCT
+query T
+SELECT struct_update({a: 1, b: 2}, a := 'c', d := 3);
+----
+{'a': c, 'b': 2, 'd': 3}
+
+# Test adding a field to a STRUCT and updating out of order
+query T
+SELECT struct_update({a: 1, b: 2}, d := 3, a := 'c');
+----
+{'a': c, 'b': 2, 'd': 3}
+
+# Test using in a table
+statement ok
+CREATE TABLE tbl (col STRUCT(i INT));
+
+statement ok
+INSERT INTO tbl SELECT {'i': range} FROM range(3);
+
+query I
+SELECT struct_update(col, i:=10) FROM tbl;
+----
+{'i': 10}
+{'i': 10}
+{'i': 10}
+
+query I
+SELECT struct_update(col, i:=col.i+1) FROM tbl;
+----
+{'i': 1}
+{'i': 2}
+{'i': 3}
+
+query I
+SELECT struct_update(col, i:='i='||col.i) FROM tbl;
+----
+{'i': 'i=0'}
+{'i': 'i=1'}
+{'i': 'i=2'}
+
+# Test inserting NULL as the default value.
+query I
+SELECT struct_update(col, a := NULL::VARCHAR) FROM tbl ORDER BY ALL;
+----
+{'i': 0, 'a': NULL}
+{'i': 1, 'a': NULL}
+{'i': 2, 'a': NULL}
+
+query I
+SELECT struct_update(col, a := NULL::VARCHAR) FROM tbl ORDER BY ALL;
+----
+{'i': 0, 'a': NULL}
+{'i': 1, 'a': NULL}
+{'i': 2, 'a': NULL}
+
+query I
+SELECT struct_update(col, a := NULL, b := NULL::VARCHAR, c := [NULL]) FROM tbl ORDER BY ALL;
+----
+{'i': 0, 'a': NULL, 'b': NULL, 'c': [NULL]}
+{'i': 1, 'a': NULL, 'b': NULL, 'c': [NULL]}
+{'i': 2, 'a': NULL, 'b': NULL, 'c': [NULL]}
+
+query I
+SELECT struct_update(col, i := 10, a := NULL, b := NULL::VARCHAR, c := [NULL]) FROM tbl ORDER BY ALL;
+----
+{'i': 10, 'a': NULL, 'b': NULL, 'c': [NULL]}
+{'i': 10, 'a': NULL, 'b': NULL, 'c': [NULL]}
+{'i': 10, 'a': NULL, 'b': NULL, 'c': [NULL]}
+
+query I
+SELECT struct_update(col, i := col.i+10, a := NULL, b := NULL::VARCHAR, c := [NULL]) FROM tbl ORDER BY ALL;
+----
+{'i': 10, 'a': NULL, 'b': NULL, 'c': [NULL]}
+{'i': 11, 'a': NULL, 'b': NULL, 'c': [NULL]}
+{'i': 12, 'a': NULL, 'b': NULL, 'c': [NULL]}