# Input value for the tests:
# select timestamp_col from alltypes where id=30;
# 2009-01-04 00:30:01.350000000
====
---- QUERY
# timestamp to string conversion
select
    cast(timestamp_col as string format 'HH24 HH24 HH12:MI:SS MM-DD-YYYY DDD SSSSS P.M.')
    from alltypes
    where id=30
---- RESULTS
'00 00 12:30:01 01-04-2009 004 01801 A.M.'
---- TYPES
string
====
---- QUERY
# timestamp to varchar conversion
select
    cast(timestamp_col as varchar format 'HH24 HH24 HH12:MI:SS MM-DD-YYYY DDD SSSSS PM')
    from alltypes
    where id=30
---- RESULTS
'00 00 12:30:01 01-04-2009 004 01801 AM'
---- TYPES
string
====
---- QUERY
# timestamp to char conversion
select
    cast(timestamp_col as char(38) format 'HH24 HH24 HH12:MI:SS MM-DD-YYYY DDD SSSSS PM')
    from alltypes
    where id=30
---- RESULTS
'00 00 12:30:01 01-04-2009 004 01801 AM'
---- TYPES
char
====
---- QUERY
# For the string types to timestamp conversions I use the timestamp_col from alltypes
# convert it to the desired string format and then convert back to timestamp.
# string to timestamp conversion
select cast(cast(timestamp_col as string format 'DD-MM-YYYY HH12:MI:SS') as timestamp
    format 'DD-MM-YYYY HH:MI:SS') from alltypes where id=30
---- RESULTS
2009-01-04 00:30:01
---- TYPES
timestamp
====
---- QUERY
# varchar to timestamp conversion
select cast(cast(timestamp_col as varchar format 'HH:MI:SS YYYY-MM-DD') as timestamp
    format 'HH:MI:SS YYYY-MM-DD') from alltypes where id=30
---- RESULTS
2009-01-04 00:30:01
---- TYPES
timestamp
====
---- QUERY
# char to timestamp conversion
select cast(cast(timestamp_col as char(19) format 'yyyy/dd/mm hh:mi:ss') as timestamp
    format 'yyyy/dd/mm hh:mi:ss') from alltypes where id=30
---- RESULTS
2009-01-04 00:30:01
---- TYPES
timestamp
====
---- QUERY
# Multiple casts are in the expr tree with different format.
# Input: '01/04/09' => 2009-04-01 > 2009-01-04
select (cast(date_string_col as timestamp format 'DD/MM/YYYY') >
        cast(date_string_col as timestamp format 'MM/DD/YYYY'))
    from alltypes where id=30
---- RESULTS
True
---- TYPES
boolean
====
---- QUERY
# Multiple nested casts are in the expr tree with different format.
# Input: '01/04/09'
select cast(cast(date_string_col as timestamp format 'mm/dd/yyyy')
           as string format 'hh24:mi yyyy-mm-dd') from alltypes where id=30;
---- RESULTS
'00:00 2009-01-04'
---- TYPES
string
====
---- QUERY
# Year boundary tests
select cast("1399-12-31" as timestamp FORMAT "YYYY-MM-DD");
---- RESULTS
NULL
---- TYPES
timestamp
====
---- QUERY
select cast("1400-01-01" as timestamp FORMAT "YYYY-MM-DD");
---- RESULTS
1400-01-01 00:00:00
---- TYPES
timestamp
====
---- QUERY
select cast("9999-12-31" as timestamp FORMAT "YYYY-MM-DD");
---- RESULTS
9999-12-31 00:00:00
---- TYPES
timestamp
====