I am trying to get the day of the week for the asofdate field. I am receiving an error using Oracle SQL that states: 'a non numeric character was found where a numeric character was expected.' That error is for this query:
select to_char(to_date(max(distinct(asofdate)), 'mm/dd/yyyy'), 'DY') from PS_Z_EXS251AE_EMP
the below query returns '1/6/2015'
select max(distinct(asofdate)) from PS_Z_EXS251AE_EMP
Does anyone know what I'm doing wrong?
If asofdate is stored as a date/time data type, then why are you converting it to a date. Also, why are you using max():
select to_char(asofdate, 'DY')
If asofdate is stored as a string, then you should probably fix the data. Why are you storing a date as a string. That is the wrong type.
If you want the day of the week of the maximum date, which your question suggests, then just do:
select to_char(max(asofdate), 'DY')
You can simply do
select distinct max(extract(day from asofdate)) from from PS_Z_EXS251AE_EMP;
Related
I have a table called Transactions that has a column called trans_date. I am just trying to do a simple query in the SQL*Plus command window
The query is
SELECT * FROM transactions WHERE
trans_date BETWEEN to_date('09/11/2021','mm/dd/yyyy') AND to_date('09/12/2021','mm/dd/yyyy');
When I run this query I get not valid month and there is a little * under trans_date. Most of what I have read suggests the query is right but I am not sure what the problem is. The data type is varchar2(20).
Since trans_date is a varchar and you're trying to query whether it's between two dates, you need to convert it to a date too. Assuming it has the same format as the literals in your query:
SELECT *
FROM transactions
WHERE to_date(trans_date, 'mm/dd/yyy') BETWEEN
to_date('09/11/2021','mm/dd/yyyy') AND to_date('09/12/2021','mm/dd/yyyy');
Seems like problem is columns data type, Try convert it to date,
SELECT * FROM transactions
WHERE to_date(trans_date,'mm/dd/yyyy') BETWEEN to_date('09/11/2021','mm/dd/yyyy') AND to_date('09/12/2021','mm/dd/yyyy');
You need to convert trans_date to a date. However, you can use date constants for the comparisons:
SELECT *
FROM transactions
WHERE to_date(trans_date, 'mm/dd/yyyy') BETWEEN DATE '2021-09-11' AND DATE '2021-09-12';
You should fix your data model so the dates are stored correctly, using Oracle's built-in data type.
I have ID_BB_SECURITY column where the date value is stored in this column for example '20190801'.
I want to get month number from this field for example for August date i want to get 8.
I tried below query but it throws an error 'literal does not match':
select to_number(to_date(ID_BB_SECURITY),'mm') from BT_EXPORT
I am not sure if i have to ignore null values so as to avoid the error
If the value is a number or string then you can convert it to a date with an appropriate mask - which is what you are missing, and what is causing the error you are getting (as it's using your session's NLS_DATE_FORMAT setting, which apparently does not match the format of the data; but which you should not rely on anyway, as #MTO said in comments):
to_date(ID_BB_SECURITY, 'YYYYMMDD')
and then extract the month number from that:
select extract(month from to_date(ID_BB_SECURITY, 'YYYYMMDD')) from BT_EXPORT
Or you could just use a substring:
select to_number(substr(ID_BB_SECURITY, 5, 2)) from BT_EXPORT;
Those assume a fixed consistent format, which is always a risky assumption when using the wrong data type. Ans if it's a number they are doing an implicit conversion from number to string, which you could turn into an explicit conversion for greater clarity.
If it's already a date - as it should be, of course - then you don't need the conversion:
select extract(month from ID_BB_SECURITY) from BT_EXPORT
If you have a number, you can use arithmetic to extract the month:
select mod(floor(20190801 / 100), 100)
from dual;
You could try converting the number date to a string, and then extracting the 5th and 6th characters:
SELECT
SUBSTR(TO_CHAR(ID_BB_SECURITY), 5, 2) AS mm
FROM BT_EXPORT;
But, it would be much better for you to use a proper date column. Then, you could use a less draconian method such as:
SELECT
TO_CHAR(ID_BB_SECURITY, 'mm') AS mm -- assuming date
FROM BT_EXPORT;
select to_number(to_char(to_date('20190801', 'yyyymmdd'), 'mm')) from dual
Try this one
select extract(month from to_date(ID_BB_SECURITY, 'YYYYMMDD')) from BT_EXPORT
This one convert number to date then extract month.
also
select extract(month from to_date('20190801', 'yyyymmdd')) from dual
Your date column has the value stored in the following format "yyyymmdd" where
yyyy is the year
mm the month
dd the day
So in order to return the number value of the month (mm) we can do as follows:
1: first transform the value from a number to a date using
to_date(20190801,'yyyymmdd')
2: get month using to_date operator
to_char( to_date(20190801,'yyyymmdd'), 'mm')
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')
I have a problem with converting a varchar2 fields into a date format.
I got 2 columns with the datatyp varchar2, one is called qtime the other is called ztime. Both fields contain strings in this format (f.e. 152015 -> would be a timestamp 15:20:15).
For reporting reasons I need to convert this fields into a date format, afterwards I want to substract (qtime-ztime) the fields an convert them into the format [hh] (f.e. after the operation 01:20:00 would be -> 01). Is it possible to to this within Oracle SQL 12c? The biggest problem for me right now is that I don't get those Strings converted into a date format.
select TO_DATE(qtime,'MM/DD/YYYY hh24:mi:ss') just gives me
ORA-01861:"literal does not match format string"
select TO_DATE(qtime,'hh24mmss') gives me a wrong Date
01.03.2018
select TO_TIMESTAMP(qtime,'hh24mmss') gives me a wrong Date
01.03.2018 BUT the correct time with f.e. 15:20:15,0000000
Thank you in advance, any help is appreciated
Note: I only have reading rights on the database Oracle 12c, so I need to to this within Statements
"The Database contains another column with the correct date for each time"
The missing piece of the puzzle! Concatenate the two columns to get something which can be converted to an Oracle DATE:
select to_date(qdate||qtime, 'yyyymmddhh24miss') as qdatetime
, to_date(zdate||ztime, 'yyyymmddhh24miss') as zdatetime
from your_table
Once you have done that you can perform arithmetic of the dates e.g.
select id
, zdatetime - qdatetime as time_diff
from ( select id
, to_date(qdate||qtime, 'yyyymmddhh24miss') as qdatetime
, to_date(zdate||ztime, 'yyyymmddhh24miss') as zdatetime
from your_table
)
If you want the number of hours in the difference you can include this expression in the projection of the outer query:
, extract( hour from (zdatetime - qdatetime) day to second) as hrs_ela
First off, if you are trying to convert a varchar2 into a date without specifying neither day nor month, it will default to the first day of the current month:
If you specify a date value without a date, then the default date is the first day of the current month.
You can read up more here
Also in 2nd and 3rd your example, you are using 'hh24mmss' for specifying hour, minute and second components, but do note that correct format for minutes is 'mi' and not 'mm', which is used for months.
So the solution is to concatenate both date and time component when creating the date as the other answer suggested, tho I would recommend using a single date field as it can store the information you need.
I have a question on how to compare YYYYMM in Oracle SQL.
graduation_date is saved in string format like '200212'. I want to query rows with graduation_date from Jan 2007 to Jan 2010.
Here is my query:
select ids,
from table
where to_date(substr(graduation_date,1,6),'YYYYMM' between 'Jan-2007'and 'Jan-2010'
I got error
ORA-01858:a non-numeric character was found where a numeric was
expected
Can anyone can help figure this out? Many thanks!
I found a way to compare. Since the graduation_date is saved as vchar2 format like '20021200'.Default value is '00000000'. ONLY Year & Month is saved in Graduation_date. Here is my query:
select ids,
from table
where graduation_date between '20070100'and '20100100'
I tired some other ways advised but got ORA-01843: not a valid month error
select ids,
from table
where to_date(substr(graduation_date,1,6),'YYYYMM' between 'Jan-2007'and 'Jan-2010'
Thank you guys but just wondering why I can't use to_date to compare in this scenario?
Remove the comma after ids... Need a closing bracket after YYYYMM, is graduation_date of type char/varchar? If not then you can't do substr... Finally do to_date('200701', 'YYYYMM') and to other date also...
In Addition to delete comma here: select ids, and to add bracket after 'YYYYMM' here: To_date(substr(graduation_date,1,6),'YYYYMM' you also need to know:
You are seeing the dates in the format which is set in your NLS settings. Even after conversion you letting your NLS to show in already set format, in your case it's seems like MM/DD/YYYY, check by:
SELECT VALUE FROM nls_session_parameters WHERE parameter = NLS_DATE_FORMAT';
if you want to select date in your special format then after to_date function also use to_char function, like (if your data is in that graduation_date column like YYYYMM then no need to use substr function, else use as below):
SELECT to_char (to_date (SUBSTR (graduation_date, 1, 6), 'YYYYMM'), 'YYYYMM') FROM table;
So, if you want to select your data, then use below script (if your data is in that graduation_date column like YYYYMM then no need to use substr function, else use as below):
SELECT ids
FROM table
WHERE to_date (SUBSTR (graduation_date, 1, 6), 'YYYYMM')
BETWEEN to_date ('200701', 'YYYYMM') AND to_date ('201001', 'YYYYMM');
I don't suggest to use 'Jan-2012' (even if you convert by to_char function) with BETWEEN cause it will compare bytes of letter, not the month, so it's possible to get also June or July for each year if you use like this (and data only for Jan, not all months between them):
WHERE to_char (to_date (SUBSTR (graduation_date, 1, 6), 'YYYYMM'), 'Mon-YYYY')
BETWEEN 'Jan-2007' AND 'Jan-2010';
result something like this:
Jan-2007
Jun-2007
Jul-2007
Jan-2010 ...