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# 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
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