substring.sql

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statement
CREATE TABLE test_substring(s string) USING parquet

statement
INSERT INTO test_substring VALUES ('hello world'), (''), (NULL), ('abc')

query
SELECT substring(s, 1, 5) FROM test_substring

query
SELECT substring(s, -3) FROM test_substring

query
SELECT substring(s, 0, 3) FROM test_substring

query
SELECT substring(s, 1, 0) FROM test_substring

query
SELECT substring(s, 1, -1) FROM test_substring

query
SELECT substring(s, 100) FROM test_substring

query
SELECT substring(s, -2, 3) FROM test_substring

query
SELECT substring(s, -10, 3) FROM test_substring

query
SELECT substring(s, -300, 3) FROM test_substring

-- literal + literal + literal
query ignore(https://github.com/apache/datafusion-comet/issues/3337)
SELECT substring('hello world', 1, 5), substring('hello world', -3), substring('', 1, 5), substring(NULL, 1, 5)