# name: test/sql/variables/test_variables.test
# description: Test SQL variables
# group: [variables]

statement ok
PRAGMA enable_verification

statement ok
SET VARIABLE animal = 'duck'

query I
SELECT GETVARIABLE('animal')
----
duck

statement ok
PREPARE v1 AS SELECT GETVARIABLE($1);

query I
EXECUTE v1('animal');
----
duck

statement ok
CREATE MACRO _(x) AS getvariable(x);

query I
SELECT _('animal')
----
duck

# overwriting
statement ok
SET VARIABLE animal='bird'

query I
SELECT GETVARIABLE('animal')
----
bird

query III
FROM duckdb_variables();
----
animal	bird	VARCHAR

query III
SHOW VARIABLES
----
animal	bird	VARCHAR

statement ok
RESET VARIABLE animal

query I
SELECT GETVARIABLE('animal')
----
NULL

# setting from a subquery
statement ok
CREATE TABLE animal_list(a VARCHAR);

statement ok
INSERT INTO animal_list VALUES ('duck'), ('goose');

statement ok
SET VARIABLE animals=(SELECT LIST(a) FROM animal_list)

query I
SELECT GETVARIABLE('animals')
----
[duck, goose]

statement error
SET VARIABLE animals=UNNEST([1,2,3])
----
can only handle a single value

# variable does not exist
query I
SELECT GETVARIABLE('xxx')
----
NULL