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# name: test/sql/alter/struct/add_col_struct.test
# description: Test ALTER TABLE ADD COLUMN: add column to a struct
# group: [struct]
statement ok
CREATE TABLE test(s STRUCT(i INTEGER, j INTEGER))
statement ok
INSERT INTO test VALUES (ROW(1, 1)), (ROW(2, 2))
# add a column to a struct
statement ok
ALTER TABLE test ADD COLUMN s.k INTEGER
query I
SELECT * FROM test
----
{'i': 1, 'j': 1, 'k': NULL}
{'i': 2, 'j': 2, 'k': NULL}
# defaults
statement ok
ALTER TABLE test ADD COLUMN s.l INTEGER DEFAULT 42
query I
SELECT * FROM test
----
{'i': 1, 'j': 1, 'k': NULL, 'l': 42}
{'i': 2, 'j': 2, 'k': NULL, 'l': 42}
# this is transactional
statement ok
BEGIN
statement ok
ALTER TABLE test ADD COLUMN s.m INTEGER DEFAULT 42
query I
SELECT * FROM test
----
{'i': 1, 'j': 1, 'k': NULL, 'l': 42, 'm': 42}
{'i': 2, 'j': 2, 'k': NULL, 'l': 42, 'm': 42}
statement ok
ROLLBACK
query I
SELECT * FROM test
----
{'i': 1, 'j': 1, 'k': NULL, 'l': 42}
{'i': 2, 'j': 2, 'k': NULL, 'l': 42}
# already exists
statement error
ALTER TABLE test ADD COLUMN s.i VARCHAR
----
field already exists in struct s
# this just gets ignored
statement ok
ALTER TABLE test ADD COLUMN IF NOT EXISTS s.i VARCHAR
query I
SELECT * FROM test
----
{'i': 1, 'j': 1, 'k': NULL, 'l': 42}
{'i': 2, 'j': 2, 'k': NULL, 'l': 42}
# not a struct
statement error
ALTER TABLE test ADD COLUMN s.i.a INTEGER
----
Binder Error: Column 'i' is not a nested type, ADD COLUMN can only be used on nested types
# nested column does not exist
statement error
ALTER TABLE test ADD COLUMN s.x.a INTEGER
----
does not exist
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