I got data from server to do some power bi job but the date format like timestamp and can't convert it to decimal or to date
0x00000000079A367B
In SQL Server; a timestamp column is automatically updated whenever a row is updated, and the value is monotonically increasing in the database. There is absolutely no relation to date and time. https://learn.microsoft.com/en-us/answers/questions/238819/purpose-to-use-timestamp-datatype-in-sql-server.html
But you can cast this hexadecimal value to a bigint value as the following:
SELECT CAST (0x00000000079A367B AS BIGINT); --output is 127547003
or
SELECT CAST (your_column AS BIGINT) as Num From Your_Table
Check this demo.
Related
I need to convert dates in a DB2 Database to UTC values.
Usually the TO_UTC_TIMESTAMP function would be the way to do this, but this method seems to only work if the source time-zone is known. The problem I'm facing is that I need an SQL script, that converts the existing dates from the current time-zone of the database to UTC, without hard-coding the current time-zone.
What I already tried is the following SQL:
-- assuming there is a table called 'test' with a column 'col1' of the type timestamp
SELECT col1 AS my_time_zone, TO_UTC_TIMESTAMP(col1, CURRENT TIMEZONE) AS utc FROM test;
This does not convert the date value, because CURRENT TIMEZONE returns an integer value (in my case 10000 for UTC+01:00). This integer value seems to be converted to a VARCHAR, that cannot be interpreted by the TO_UTC_TIMESTAMP function.
From the DB2 documentation:
timezone-expression
[...] If the expression is not a VARCHAR, it is cast to VARCHAR before the function is evaluated.
[...] If the timezone-expression returns a value that is not a time zone in the IANA time zone database, then the value of expression is returned without being adjusted.
So my question is: Is there a way to get the current time-zone from a DB2 database, in a format that the TO_UTC_TIMESTAMP function can use? Or is there any other way to convert dates from the current time-zone to UTC?
That would be simply col1 - current timezone, given that col1 has the timestamp data type.
I have a DB2 table where NUM column is defined as INTEGER in DB2 and the query result is shown below,
NUM columns have numeric values which needs to be converted to date format. This numeric values are nothing but duration from 01.01.1850. Example : 01.01.1850 + 57677 days = 01.12.2007.
So Is it possible to convert or cast the numeric value into date fields in DB2 , so that the select query from the table can result as shown below after converting a numeric field into date field,
You may use the scalar ADD_DAYS function:
SELECT EMP_ID, ADD_DAYS('1850-01-01', NUM) AS NUM
FROM yourTable;
Not all Db2 products & versions have the ADD_DAYS function.
The following expression works for all of them.
You may optionally add DAY or DAYS at the end.
DATE ('1850-01-01') + 57677
When casting from a varchar data type to a date datatype, my query results are altering the day of the original field. For example, the below two queries
select to_Date('2017-12-15 00:11:10.167664+00', 'YYYY-MM-DD')
select '2017-12-15 00:11:10.167664+00'::date
return a value of "2017-12-14". I am querying a vertica database using DataGrip.
You can just take the leftmost 10 characters of the string and then convert to date, e.g.:
SELECT TO_DATE(LEFT('2017-12-15 00:11:10.167664+00',10), 'YYYY-MM-DD')
This i got to convert a single binary date to Gregorian date ,
Select to_char(to_date(sum(2415020+42744),'J'),'MMDDYYYY') Last_arrear_date from dual;
But I'm not able to convert a binary date column date into Gregorean in xyz table
For Example
Suppose i have a table borm,That has account_open_date column that stores data in binary format , I want to convert that account_open_date column data into Gregorian date format. Please let me know how to convert that
While you have to change the entire column, Don't use the sum function.
Try the below SQL command it will work.
select acct_no, to_char(to_date((account_open_date + 2415020), 'J'),'DD-MON-YYYY')
from borm;
To Change Binary to Gregorian
select column1 ,...columnN, to_char(to_date((Column_name + 2415020), 'J'),'DD-MON-YYYY')
from Table_Name
WHERE Condition;
To change Gregorian to Binary:
select column1,columnN, to_char(to_date(Column_Name,'YYYYMMDD'),'J')-2415020
from Table_Name
where condition ;
I have a db where I have converted 2 date columns to varchar for the purpose of getting 1 column substringed into another. However, now I don't seem to be able to convert the datatype when I try to use:
ALTER TABLE datacomplete
ALTER COLUMN yearmonth TYPE DATE; /*Can't find a way to specify a format*/
It throws this error:
ERROR: column "yearmonth" cannot be cast automatically to type date
Hint: You might need to specify "USING yearmonth::date".
I'm not sure how to use that command at all, could anyone potentially assist?
My first column is in the format of yyyy-mm-dd, however I'd like it to be yyyymm only, but I'm guessing this is easier once I convert the datatype to date and I can somehow switch formats.
The second column only shows the year so I need to convert it to date as format 'yyyy'.
UPDATE: The first one was solved, now I need to convert the second to 'yyyy'
ALTER TABLE pscomplete_1 ALTER COLUMN "year" TYPE DATE USING "year"::date;
It throws this error
15:12:51 [ALTER - 0 rows, 1.062 secs] [Code: 0, SQL State: 22007] ERROR: >invalid input syntax for type date: "2016"
... 1 statement(s) executed, 0 rows affected, exec/fetch time: 1.062/0.000 sec >[0 successful, 1 errors]
The USING keyword allows you to give the translation function to PostgreSQL.
For your first column it is easy for you already have a correct DATE format:
ALTER TABLE datacomplete ALTER COLUMN yearmonth TYPE DATE USING yearmonth::DATE;
For your second column it is unclear for PostgreSQL which exact date you want. Let's say we want the first of January of the given year:
ALTER TABLE datacomplete ALTER COLUMN year TYPE DATE USING (year || '-01-01')::DATE;
I understood you were starting from a VARCHAR column in the format 'YYYY-MM-DD'.
So I'll do the same.
And you want a column in the date format, and you want a yearmonth in all-digits format.
If I'm not forced to use leading zeroes in an all-digits column, I prefer INT to string columns.
And I prefer to make the same derivation only once if I can do that.
This is why I use a WITH clause (global table expression) to cast the varchar to date, and then I use the resulting date for the DATE_PART() function I use to create the yearmonth column. I have seen very often that date arithmetics are safer and often faster than subtring-ing the date literal (remember, the Americans format dates differently from the Europeans, there are different formats within Europe, and also in Asia, and not all like the ISO date format). So I derive yearmonth as the year multiplied by 100, plus the month, and as DATE_PART() returns a float, I cast the whole expression to INT.
So here goes:
WITH foo(varchar_dt) AS (
SELECT '2017-01-11'
UNION ALL SELECT '2016-12-11'
UNION ALL SELECT '2016-11-11'
UNION ALL SELECT '2016-10-11'
)
, foo_with_date AS (
SELECT
varchar_dt
, CAST(varchar_dt AS DATE) AS the_date
FROM foo
)
SELECT
varchar_dt
, the_date
, CAST(DATE_PART('year',the_date)*100 + DATE_PART('month',the_date) AS INT) AS yearmonth
FROM foo_with_date
;
varchar_dt|the_date |yearmonth
2017-01-11|2017-01-11| 201,701
2016-12-11|2016-12-11| 201,612
2016-11-11|2016-11-11| 201,611
2016-10-11|2016-10-11| 201,610
I can't help myself - I find this much cleaner, and filtering by yearmonth would become filtering by an integer, which is always at least a little bit faster than strings.
Happy playing
Marco the Sane