I am trying to convert
Thu Jan 22 07:10:00 CST 2015
into date format of mm/dd/yyyy => 01/22/2015.
I tried using the convert function with datetime and format types:
select convert(varchar(11, 'Thu Jan 22 07:10:00 CST 2015', 109)
but I get an error.
Is the error because you are missing a bracket?
select convert(varchar(11), 'Thu Jan 22 07:10:00 CST 2015', 109)
^
i had it solved by following sql. posting here so it will help someone in need
select convert(varchar(11),convert(datetime,Right('Thu Jan 22 07:10:00 CST 2015',4) +'-'+ SUBSTRING('Thu Jan 22 07:10:00 CST 2015',5,3)+'-'+substring('Thu Jan 22 07:10:00 CST 2015',9,2)),101) DateValue
Related
I have the following "Mon Mar 14 00:04:26 +0000 2016" and I want to convert it into "yyyy-mm-dd" format in Hive. Can someone help me with this?
Try this.
SELECT from_unixtime( unix_timestamp('Mon Mar 14 00:04:26 +0000 2016',
'EEE MMM d H:mm:ss +0000 yyyy'), 'yyyy-MM-dd');
2016-03-14
Can you help to get an answer in hive?
Source: Sat Nov 25 2017
Output should be: 2017-11-25 00:00:00
I am using the below logic but it is not working
select from_unixtime(unix_timestamp(substr('Sat Nov 25 2017',5,15),'MMM DD YYYY'),'YYYY-MM-DD');
Regards,
mahesh
You were not too far. Case of the formatting pattern matters!
SELECT from_unixtime(unix_timestamp(substr('Sat Nov 25 2017',5,15), 'MMM dd yyyy'), 'yyyy-MM-dd HH:mm:ss');
Output
2017-11-25 00:00:00
current SQL to get 20 Dec 2016 is:
Convert(char(11), getdate(), 13) DATE,
SELECT FORMAT(cast('20 DEC 2016' as date),'dd MMMM yyyy')
select TO_TIMESTAMP_TZ('1965-08-01 00:00:00.0','Dy Mon DD HH:MM:ss TZD YYYY') from dual;
i have data in wrong format in varchar column as below mentioned.
1973-12-12 00:00:00.0
2003-05-14 00:00:00.0
1950-05-01 00:00:00.0
Fri Jul 01 00:00:00 PDT 1977
Sun Feb 01 00:00:00 PST 2015
Wed May 14 00:00:00 PDT 2003
I want to keep all date in same format as below but not able to convert.
Fri Jul 01 00:00:00 PDT 1977
Sun Feb 01 00:00:00 PST 2015
Wed May 14 00:00:00 PDT 2003
When adding 'Dy Mon DD HH:MM:ss TZD YYYY' format then getting exception not valid date format due to TZD.
Can any one help me to convert this date and keep in same format through update query.
Storing dates or timestamps as strings is not a good idea. You should make your columns the correct datatype for the data they will hold. As well as allowing Oracle to be more efficient, it prevents you storing invalid data.
However, if you just want to convert strings like '1965-08-01 00:00:00.0' to 'Tue Aug 01 00:00:00 PDT 2000' so they are all in the same string format you can convert those values to timestamps with to_timestamp(), specify which time zone they represent with from_tz(), and then convert them back to string in the format you want. With a demo table t built with your sample data:
update t set str = to_char(from_tz(to_timestamp(str, 'YYYY-MM-DD HH24:MI:SS.FF'),
'America/Los_Angeles'), 'Dy Mon DD HH24:MI:SS TZD YYYY')
where str not like '%PDT%' and str not like '%PST%';
3 rows updated.
select * from t;
STR
----------------------------
Wed Dec 12 00:00:00 PST 1973
Wed May 14 00:00:00 PDT 2003
Mon May 01 00:00:00 PDT 1950
Fri Jul 01 00:00:00 PDT 1977
Sun Feb 01 00:00:00 PST 2015
Wed May 14 00:00:00 PDT 2003
6 rows selected
You need to apply a filter so it ignores any rows that are already in the target format, since those would error. Here I've excluded any that contain PDT or PST. If you have other formats you haven't shown you could use regexp_like() to look for rows that exactly match a specific format instead.
More generally, to convert any of your strings to actual timestamps you can create a function that tries various formats and returns the first one that successfully converts, by trapping exceptions. A simple brute force approach might be:
create or replace function my_to_timestamp_tz(p_str varchar2)
return timestamp with time zone as
begin
-- try each expected pattern in turn
begin
return to_timestamp_tz(p_str, 'Dy Mon DD HH24:MI:SS TZD YYYY');
exception
when others then
null;
end;
begin
-- unspecified TZ; this assumes same as server
return to_timestamp_tz(p_str, 'YYYY-MM-DD HH24:MI:SS.FF');
exception
when others then
null;
end;
-- maybe throw an exception if no conversions worked
return null;
end;
/
PDT/PST isn't always recognised; I have two DBs that I thought were built the same but one allows that and other throws "ORA-01857: not a valid time zone". If you see that too you can work around it by treating the TZD value as a fixed string and specifying which region it represents:
-- if your DB doesn't recognise PDT/PST then force them to a region:
begin
return from_tz(to_timestamp_tz(p_str, 'Dy Mon DD HH24:MI:ss "PDT" YYYY'),
'America/Los_Angeles');
exception
when others then
null;
end;
begin
return from_tz(to_timestamp_tz(p_str, 'Dy Mon DD HH24:MI:ss "PST" YYYY'),
'America/Los_Angeles');
exception
when others then
null;
end;
-- other time zone abbreviations and matching regions if you expect any
Using that function:
with t (str) as (
select '1973-12-12 00:00:00.0' from dual
union all select '2003-05-14 00:00:00.0' from dual
union all select '1950-05-01 00:00:00.0' from dual
union all select 'Fri Jul 01 00:00:00 PDT 1977' from dual
union all select 'Sun Feb 01 00:00:00 PST 2015' from dual
union all select 'Wed May 14 00:00:00 PDT 2003' from dual
)
select str, my_to_timestamp_tz(str) as converted
from t;
STR CONVERTED
---------------------------- ----------------------------------------------------
1973-12-12 00:00:00.0 1973-12-12 00:00:00 Europe/London
2003-05-14 00:00:00.0 2003-05-14 00:00:00 Europe/London
1950-05-01 00:00:00.0 1950-05-01 00:00:00 Europe/London
Fri Jul 01 00:00:00 PDT 1977 1977-07-01 00:00:00 America/Los_Angeles
Sun Feb 01 00:00:00 PST 2015 2015-02-01 00:00:00 America/Los_Angeles
Wed May 14 00:00:00 PDT 2003 2003-05-14 00:00:00 America/Los_Angeles
Notice that the first three assume a time zone, and because I'm running this in the UK pick London. If that isn't going to give the right result for you and you know those always represent a specific time zone, you can can specify that zone by changing the last block in the function to do:
begin
-- unspecified TZ; assume from a specific region
return from_tz(to_timestamp(p_str, 'YYYY-MM-DD HH24:MI:SS.FF'),
'America/Los_Angeles');
exception
...
which will then get:
STR CONVERTED
---------------------------- ----------------------------------------------------
1973-12-12 00:00:00.0 1973-12-12 00:00:00 America/Los_Angeles
2003-05-14 00:00:00.0 2003-05-14 00:00:00 America/Los_Angeles
1950-05-01 00:00:00.0 1950-05-01 00:00:00 America/Los_Angeles
Fri Jul 01 00:00:00 PDT 1977 1977-07-01 00:00:00 America/Los_Angeles
Sun Feb 01 00:00:00 PST 2015 2015-02-01 00:00:00 America/Los_Angeles
Wed May 14 00:00:00 PDT 2003 2003-05-14 00:00:00 America/Los_Angeles
If you really want to you can convert the generated timestamps back to strings, but I'd really recommend you store them as the right data type
I have following query
select substring(listDate from '............$') as v_end_date,
substring(listDate from '^...............') as v_start_date
Now listDate value can be like
select substring('06 Jan 2014 to 12 Jan 2014,
13 Jan 2014 to 19 Jan 2014,
20 Jan 2014 to 26 Jan 2014
' from '............$') as v_end_date,
substring('06 Jan 2014 to 12 Jan 2014,
13 Jan 2014 to 19 Jan 2014,
20 Jan 2014 to 26 Jan 2014
' from '^............') as v_start_date
Above query results in
V_END_DATE V_START_DATE
26 Jan 2014 06 Jan 2014
Now I need to have v_end_date and v_start_date format like yyyy-mm-dd and like
Mon 06 Jan 2014.
Convert your string to an actual date with to_date() and use to_char() to get pretty much any format you like.
Demo:
SELECT to_char(day, 'YYYY-MM-DD') AS format1
, to_char(day, 'Dy DD Mon YYYY') AS format2
FROM (SELECT to_date('26 Jan 2014', 'DD Mon YYYY') AS day) sub