modules/sql-engine/src/integrationTest/sql/group1/function/string/test_length.test

# name: test/sql/function/string/test_length.test
# description: Test length function
# group: [string]

statement ok
CREATE TABLE strings(s VARCHAR)

statement ok
INSERT INTO strings VALUES ('hello'), ('world'), (NULL)

# normal length
query I
SELECT length(s) FROM strings ORDER BY s NULLS LAST
----
5
5
NULL

# length after concat
query I
SELECT length(s || ' ' || 'a') FROM strings ORDER BY s NULLS LAST
----
7
7
NULL

query T
SELECT length(null)
----
NULL