# name: test/sql/copy/csv/csv_names.test
# description: Read a CSV with names flags
# group: [csv]

statement ok
PRAGMA enable_verification

# Duplicate names shuold not be accepted
statement error
from read_csv('data/csv/header_bug.csv', names=['col1', 'col1']) LIMIT 1;
----
read_csv names must have unique values

# Empty Names should not be accepted
statement error
from read_csv('data/csv/header_bug.csv', names=['']) LIMIT 1;
----
read_csv names cannot have empty (or all whitespace) value

statement error
from read_csv('data/csv/header_bug.csv', names=[' ', '  '], header = 0);
----
read_csv names cannot have empty (or all whitespace) value

# no names provided
query IIII
select column00, column01, column02, column03 from 'data/csv/real/lineitem_sample.csv' LIMIT 1;
----
1	15519	785	1

# override the names partially
query IIII
select l_orderkey, l_partkey, column02, column03 from read_csv_auto('data/csv/real/lineitem_sample.csv', names=['l_orderkey', 'l_partkey']) LIMIT 1;
----
1	15519	785	1

# empty list
query IIII
select column00, column01, column02, column03 from read_csv_auto('data/csv/real/lineitem_sample.csv', names=[]) LIMIT 1;
----
1	15519	785	1

# specify all names
query IIII
select l_orderkey, l_partkey, l_commitdate, l_comment from read_csv_auto('data/csv/real/lineitem_sample.csv', column_names=['l_orderkey', 'l_partkey', 'l_suppkey', 'l_linenumber', 'l_quantity', 'l_extendedprice', 'l_discount', 'l_tax', 'l_returnflag', 'l_linestatus', 'l_shipdate', 'l_commitdate', 'l_receiptdate', 'l_shipinstruct', 'l_shipmode', 'l_comment']) LIMIT 1;
----
1	15519	1996-02-12	egular courts above the

# specify too many names
statement error
select l_orderkey, l_partkey, l_commitdate, l_comment from read_csv_auto('data/csv/real/lineitem_sample.csv', names=['l_orderkey', 'l_partkey', 'l_suppkey', 'l_linenumber', 'l_quantity', 'l_extendedprice', 'l_discount', 'l_tax', 'l_returnflag', 'l_linestatus', 'l_shipdate', 'l_commitdate', 'l_receiptdate', 'l_shipinstruct', 'l_shipmode', 'l_comment', 'xx']) LIMIT 1;
----
Error when sniffing file "data/csv/real/lineitem_sample.csv".

# specify names on a file with a header
query II
select yr, Quarter from read_csv_auto('data/csv/real/ontime_sample.csv', names=['yr']) LIMIT 1;
----
1988	1

# NULL
statement error
select column00, column01, column02, column03 from read_csv_auto('data/csv/real/lineitem_sample.csv', names=NULL) LIMIT 1;
----
read_csv names cannot be NULL

# specify the names twice
statement error
select l_orderkey, l_partkey, column02, column03 from read_csv_auto('data/csv/real/lineitem_sample.csv', names=['l_orderkey', 'l_partkey'], column_names=['l_orderkey']) LIMIT 1;
----
read_csv column_names/names can only be supplied once

statement error
select l_orderkey, l_partkey, column02, column03 from read_csv_auto('data/csv/real/lineitem_sample.csv', names=42) LIMIT 1;
----
Failed to cast value: Unimplemented type for cast (INTEGER -> VARCHAR[])

# specify options delim and sep
statement error
select column00 from read_csv_auto('data/csv/real/lineitem_sample.csv', delim='|', sep='|') LIMIT 1;
----
CSV Reader function option delim and sep are aliases, only one can be supplied

# duplicate names
statement error
select l_orderkey, l_partkey, column02, column03 from read_csv_auto('data/csv/real/lineitem_sample.csv', names=['l_orderkey', 'l_orderkey']) LIMIT 1;
----
read_csv names must have unique values. "l_orderkey" is repeated.

query I
select Columns FROM sniff_csv('data/csv/header.csv', names = ['a'])
----
[{'name': a, 'type': VARCHAR}]

query I
FROM read_csv('data/csv/header.csv', names = ['a'])
----
line2
line3

query I
select Columns FROM sniff_csv('data/csv/header.csv', names = ['a'], header = false)
----
[{'name': a, 'type': VARCHAR}]

query I
FROM read_csv('data/csv/header.csv', names = ['a'], header = false)
----
line1
line2
line3

query I
select Columns FROM sniff_csv('data/csv/header_2.csv', names = ['a'])
----
[{'name': a, 'type': VARCHAR}, {'name': line1_2, 'type': VARCHAR}, {'name': line1_3, 'type': VARCHAR}]

query III
FROM read_csv('data/csv/header_2.csv', names = ['a'])
----
line2	line2_2	line2_3
line3	line3_2	line3_3


query I
select Columns FROM sniff_csv('data/csv/header_2.csv', names = ['a'], header=False)
----
[{'name': a, 'type': VARCHAR}, {'name': column1, 'type': VARCHAR}, {'name': column2, 'type': VARCHAR}]

statement error
select Columns FROM sniff_csv('data/csv/header_2.csv', names = ['a','b','c','d'])
----
Error when sniffing file "data/csv/header_2.csv"

query I
select Columns FROM sniff_csv('data/csv/header_2.csv', names = ['a','b','c','d'], null_padding = True)
----
[{'name': a, 'type': VARCHAR}, {'name': b, 'type': VARCHAR}, {'name': c, 'type': VARCHAR}, {'name': d, 'type': VARCHAR}]

query IIII
FROM read_csv('data/csv/header_2.csv', names = ['a','b','c','d'], null_padding = True)
----
line2	line2_2	line2_3	NULL
line3	line3_2	line3_3	NULL