# name: test/sql/parser/function_chaining.test
# description: Test function chaining
# group: [parser]

statement ok
PRAGMA enable_verification

statement ok
CREATE TABLE varchars(v VARCHAR);

statement ok
INSERT INTO varchars VALUES ('Hello'), ('World')

statement error
SELECT x.lower() FROM varchars
----
not found in FROM clause

# conflict
statement error
SELECT main.lower() FROM varchars AS t(main)
----
No function matches the given name and argument types

query I
SELECT v.lower() FROM varchars
----
hello
world

query I
SELECT (v).lower() FROM varchars
----
hello
world

statement error
SELECT v.lowe() FROM varchars
----
Function with name lowe does not exist

query I
SELECT varchars.v.lower() FROM varchars
----
hello
world

query I
SELECT v.lower().upper() FROM varchars
----
HELLO
WORLD

query I
SELECT v.lower()[:3] FROM varchars
----
hel
wor

query I
SELECT v.lower()[:3] FROM varchars
----
hel
wor

statement ok
DELETE FROM varchars

statement ok
INSERT INTO varchars VALUES ('Hello World');

# list functions
query I
SELECT v.split(' ') FROM varchars
----
[Hello, World]

query I
SELECT v.split(' ').apply(lambda x: x.lower()) FROM varchars
----
[hello, world]

query I
SELECT v.split(' ').apply(lambda x: x.lower()).filter(lambda x: x[1] == 'h') FROM varchars
----
[hello]

query I
SELECT v.split(' ').length() FROM varchars
----
2

# list aggr
query I
SELECT v.split(' ').aggregate('count') FROM varchars
----
2

query I
SELECT v.split(' ').aggregate('min') FROM varchars
----
Hello

# prepared statements
statement ok
PREPARE v1 AS SELECT ?.split(' ')[1].lower()

query I
EXECUTE v1('Hello World')
----
hello