I have a timestamp field and I just want to compare the date part of it in my query in Oracle
How do I do that,
SELECT *
FROM Table1
WHERE date(field1) = '2012-01-01'
You can truncate the date part:
select * from table1 where trunc(field1) = to_date('2012-01-01', 'YYYY-MM-DD')
The trouble with this approach is that any index on field1 wouldn't be used due to the function call.
Alternatively (and more index friendly)
select * from table1
where field1 >= to_timestamp('2012-01-01', 'YYYY-MM-DD')
and field1 < to_timestamp('2012-01-02', 'YYYY-MM-DD')
You can truncate the date
SELECT *
FROM Table1
WHERE trunc(field1) = to_Date('2012-01-01','YYY-MM-DD')
Look at the SQL Fiddle for more examples.
to_date format worked for me. Please consider the date formats:
MON-, MM, ., -.
t.start_date >= to_date('14.11.2016 04:01:39', 'DD.MM.YYYY HH24:MI:SS')
t.start_date <=to_date('14.11.2016 04:10:07', 'DD.MM.YYYY HH24:MI:SS')
Related
Select * from Table where date >='20210911' + 30days
the date is in numeric format and what to pull the records for a specific date +30days of specific date
Could you please help
Uh. Never store dates into any other datatype column but DATE. Now you first have to "convert" it, then do the arithmetic.
select *
from some_table
where to_date(date_column, 'yyyymmdd') > date '2021-09-11' + 30
--------
apply format mask that matches data in that column
Hope (should I say pray?) that all values represent valid dates. Nobody prevents you to store e.g. 20228579 into it, and - applying to_date to it - results in
SQL> select to_date('20228579', 'yyyymmdd') from dual;
select to_date('20228579', 'yyyymmdd') from dual
*
ERROR at line 1:
ORA-01843: not a valid month
SQL>
Once again, bad, BAD idea!
how to apply between clause ( where date_column between date '2021-09-11' and date '2021-09-11'+30
If you have an index on the column that you want to use then convert the value to a date then add 30 days to it and convert it back to a number:
SELECT *
FROM Table_Name
WHERE date_number BETWEEN 20210911
AND TO_NUMBER(
TO_CHAR(
TO_DATE(20210911, 'YYYYMMDD')
+ INTERVAL '30' DAY,
'YYYYMMDD'
)
)
If you don't have an index and want a simpler query then:
SELECT *
FROM Table_Name
WHERE TO_DATE(date_number, 'YYYYMMDD') BETWEEN DATE '2021-09-11'
AND DATE '2021-09-11' + INTERVAL '30' DAY
The best solution would be to convert your numeric column to a DATE column:
ALTER TABLE table_name ADD date_column DATE;
UPDATE table_name SET date_column = TO_DATE(date_number, 'YYYYMMDD');
ALTER TABLE table_name DROP COLUMN date_number;
Then:
SELECT *
FROM Table_Name
WHERE date_column BETWEEN DATE '2021-09-11'
AND DATE '2021-09-11' + INTERVAL '30' DAY
db<>fiddle here
SELECT * from my_table where product_number = '86354' and period_v in ('1/1/2019','1/31/2019');
What i also tried:
SELECT * from my_table where product_number = '86354' and period_v between '1/1/2019' and '1/31/2019'
SELECT * from my_table where product_number = '86354' and period_v between #1/1/2019#, #1/31/2019#
SELECT * from my_table where product_number = '86354' and period_v between 1/1/2019 and 31/1/2019
my dates in the sql database have the following format:
2/20/2019
month/day/year
I would recommend in Oracle:
select t.*
from my_table t
where t.product_number = 86354 and
period_v >= date '2019-01-01' and
period_v < date '2019-02-01';
If you are storing strings that you are interpreting as dates, then you should fix your data model. Oracle -- as with almost all other databases -- has a type just to store dates, conveniently called date. You can convert the values on the fly:
to_date(period_v, 'DD/MM/YYYY') >= date '2019-01-01' and
to_date(period_v, 'DD/MM/YYYY') < date '2019-02-01';
Although this can be done, I strongly recommend that you use the correct data type.
In MySQL, you would remove the date keyword:
select t.*
from my_table t
where t.product_number = 86354 and
period_v >= '2019-01-01' and
period_v < '2019-02-01';
Note that I removed the single quotes around 86354. Presumably this is a number. It is best not to mix types.
Also, the comparison uses >= and <. That is on purpose The above code works for both dates and dates with time components.
What is the query in Oracle to fetch the data for current_date
the column end_date is like the following
end_date
27-10-16 03:35:00.000000000 PM
23-11-16 11:15:00.000000000 AM
02-11-16 03:00:00.000000000 PM
08-11-16 09:00:00.000000000 AM
Like I am running the following query as
Select * from table1
where end_date < TO_DATE('2017-04-11 00:00:00', 'YYYY-MM-DD HH24:MI:SS')
it is running successfully, but when i replace the query with the current date ... it is not giving the results
Select * from table1
where end_date < TO_DATE(current_date, 'YYYY-MM-DD HH24:MI:SS')
could someone tell me what is the cause the second query is not giving results.
CURRENT_DATE returns date. There is no need to use TO_DATE. The below query should be enough.
Select * from table1
where end_date < current_date;
If you run the below query you'll understand what went wrong for you. Year becomes 0011.
SELECT TO_DATE(current_date, 'YYYY-MM-DD HH24:MI:SS') FROM DUAL;
Please note that CURRENT_DATE returns the current date in the session time zone. SYSDATE returns the current date and time set for the operating system on which the database resides. This means that CURRENT_DATE and SYSDATE can return different results. You can have a look at this
The query worked like this :
Select * from table1
where trunc(end_date) < trunc(sysdate)
Trunc is used to compare the both dates and it fetch the results.
CURRENT_DATE is already a DATE value. You can format the output using to_char if you want.
end_date < CURRENT_DATE should do the job. Or you can set the nls parameter accordingly for a better readability.
If you are comparing only date, without timestamp, you can go with trunc()
I have one table where date column is having data in below format:
"7/25/2014 12:14:27 AM'. I need to fetch this date by putting in the where clause. can anyone suggest how can i do this?
Dates (stored in tables) are represented by 7 bytes - they do not have any format associated with them. If they are formatted as a string then that is the client program which you are using to access the database applying its own formatting to the date (which you can usually set via the preferences in that program).
If the "date" is stored with a format then you are not storing it as a date but storing it as a string (i.e. VARCHAR2) format.
Query - if the date is stored as a date:
SELECT *
FROM table_name
WHERE date_column = TO_DATE( '7/25/2014 12:14:27 AM', 'MM/DD/YYYY HH12:MI:SS AM' )
or, using ANSI/ISO literals:
SELECT *
FROM table_name
WHERE date_column = TIMESTAMP '2014-07-25 00:14:27'
or, if you want values which are just for a given day then:
SELECT *
FROM table_name
WHERE date_column >= DATE '2016-05-12'
AND date_column < DATE '2016-05-13'
(This will allow you to use any indexes on the date_column column.)
or, only passing a single day value (represented by the bind variable :date_value):
SELECT *
FROM table_name
WHERE date_column >= :date_value
AND date_column < :date_value + INTERVAL '1' DAY
Query - if the "date" is stored as a string:
SELECT *
FROM table_name
WHERE TO_DATE( date_as_a_string_column, 'MM/DD/YYYY HH12:MI:SS AM' )
= TIMESTAMP '2014-07-25 00:14:27'
or, just simply:
SELECT *
FROM table_name
WHERE date_as_a_string_column = '7/25/2014 12:14:27 AM'
Most likely the date format you see is the format your SQL tool (SQLplus, SQL Developer, Toad etc.) uses. Proper date columns don't have an associated date format.
To write a reliable query for selecting by date, explicitly specify the date format in your query (otherwise Oracle we use the date format from your current session):
SELECT * FROM T1
WHERE DATE_COL > TO_DATE('7/25/2014 12:14:27 AM', 'MM/DD/YYYY HH:MI:SS AM');
Any other date format will also work:
SELECT * FROM T1
WHERE DATE_COL > TO_DATE('2014-07-25 12:14:27', 'YYYY-MM-DD HH24:MI:SS');
I have a column named date_col of data-type date. What's wrong with this query?
update test set date_col = to_date(sysdate,'DD-Mon-YYYY HH24:MI:SS')
Only date mon and yy is visible. not the time.
How can I make it work?
SYSDATE is yet a date. You don't need to cast SYSDATE to date type because it is a date_
update test
set date_col = sysdate
To see time fraction use to_char:
select to_char(date_col, 'HH24 MI')
from test;