# name: test/sql/function/date/test_strftime.test
# description: Test strftime function
# group: [date]

statement ok
SET default_null_order='nulls_first';

statement ok
PRAGMA enable_verification

# simple single specifier
query I
SELECT strftime(DATE '1992-01-01', '%Y');
----
1992

# flip the order
query I
SELECT strftime('%Y', DATE '1992-01-01');
----
1992

query I
SELECT strftime('%Y', TIMESTAMP '1992-01-01');
----
1992

# some literals
query I
SELECT strftime(DATE '1992-01-01', '(%Y)');
----
(1992)

# escapes
query I
SELECT strftime(DATE '1992-01-01', '%% %Y %%');
----
% 1992 %

# many consecutive escapes
query I
SELECT strftime(DATE '1992-01-01', '%%%%%% %Y %%%%%%');
----
%%% 1992 %%%

# multiple specifiers
query I
SELECT strftime(DATE '1992-02-01', '%d/%m/%Y');
----
01/02/1992

# we can repeat the same specifier many times
query I
SELECT strftime(DATE '1992-02-01', '%Y %Y %Y %Y');
----
1992 1992 1992 1992

# test on a table
statement ok
CREATE TABLE dates(d DATE);
INSERT INTO dates VALUES ('1992-01-01'), ('1993-03-20'), (NULL);

query I
SELECT strftime(d, '%d/%m/%Y') FROM dates ORDER BY d;
----
NULL
01/01/1992
20/03/1993

# null date
query I
SELECT strftime(NULL::DATE, '%d/%m/%Y') FROM dates ORDER BY d;
----
NULL
NULL
NULL

# null format
query I
SELECT strftime(d, NULL) FROM dates ORDER BY d;
----
NULL
NULL
NULL

query I
SELECT strftime(NULL::TIMESTAMP, NULL) FROM range(3);
----
NULL
NULL
NULL

query I
SELECT strftime(NULL::TIMESTAMP, '%%%%%% %Y %%%%%%') FROM range(3);
----
NULL
NULL
NULL

# no specifiers, only constant
query I
SELECT strftime(DATE '1992-01-01', 'hello world');
----
hello world

query I
SELECT strftime('2019-01-23'::DATE, '42');
----
42

#
# Infinities
#

foreach datatype DATE TIMESTAMP

# PG to_char returns NULL here
# but we can do better.
query I
SELECT strftime('infinity'::${datatype}, '%Y-%m-%d');
----
infinity

query I
SELECT strftime('-infinity'::${datatype}, '%Y-%m-%d');
----
-infinity

endloop

# non-constant format not supported
statement error
SELECT strftime(d, d::VARCHAR) FROM dates ORDER BY d;
----
<REGEX>:.*Invalid Input Error.*must be a constant.*

# unterminated escape
statement error
SELECT strftime(DATE '1992-01-01', '%');
----
<REGEX>:.*Invalid Input Error.*Failed to parse format.*

# unrecognized code
statement error
SELECT strftime(DATE '1992-01-01', '%R');
----
<REGEX>:.*Invalid Input Error.*Failed to parse format.*

# millisecond specifier %g
query IIII
select strftime(strptime('023', '%g'), '%g'), strftime(strptime('0', '%g'), '%g'), strftime(strptime('000', '%g'), '%g'), strftime(strptime('999', '%g'), '%g');
----
023
000
000
999

statement error
SELECT strptime('-1', '%g');
----
<REGEX>:.*Invalid Input Error.*Could not parse string.*

statement error
SELECT strptime('1000', '%g');
----
<REGEX>:.*Invalid Input Error.*Could not parse string.*

# this won't work without explicit casts
statement error
SELECT strftime('%Y', '1992-01-01');
----
<REGEX>:.*Binder Error.*Could not choose a best candidate.*