I have a table storing information about customers which includes a column "dateofbirth". I need to fetch those customers whose birthday has passed for the ongoing year (2015). How can I extract both date and month and compare it with system date and month?
You can use EXTRACT:
SELECT *
FROM CUSTOMERS
WHERE EXTRACT( MONTH FROM dateofbirth ) < EXTRACT( MONTH FROM SYSDATE )
OR ( EXTRACT( MONTH FROM dateofbirth ) = EXTRACT( MONTH FROM SYSDATE )
AND EXTRACT( DAY FROM dateofbirth ) <= EXTRACT( DAY FROM SYSDATE ) )
or you can use TO_CHAR with the MMDD day of year format
SELECT *
FROM CUSTOMERS
WHERE TO_CHAR( dateofbirth, 'MMDD' ) <= TO_CHAR( SYSDATE, 'MMDD' )
select to_char(to_date('27-01-1966','DD-MM-YYYY'),'MMDD'),to_char(sysdate,'MMDD'),
CASE WHEN to_char(to_date('27-01-1966','DD-MM-YYYY'),'MMDD') > to_char(sysdate,'MMDD')
THEN 'No'
ELSE 'Yes'
END
from dual;
So
WHERE to_char(dateofbirth,'MMDD') < to_char(sysdate,'MMDD')
I suggested the following solution
SELECT
name,
TO_CHAR(dob,'mm') MONTH,
TO_CHAR(dob,'dd') DAY
FROM
target_table
WHERE
TO_CHAR(sysdate,'yyyy') =2015
AND
(
to_number(TO_CHAR(dob,'mm'))<to_number(TO_CHAR(sysdate,'mm'))
OR
(
TO_CHAR(dob,'mm') =TO_CHAR(sysdate,'mm')
AND TO_CHAR(dob,'dd')<=TO_CHAR(sysdate,'dd')
)
);
i had written code based on my table data......
dob=date of birth
tartget_table= required table
Related
So I have this working SQL script that take a date and returns the age from current time to the given date excluding dates defined in a table called exclude dates
SELECT
COUNT(*)
FROM
(
SELECT
ROWNUM rnum
FROM
all_objects
WHERE
ROWNUM <= CAST(current_timestamp AS DATE) - to_date('&2') + 1
)
WHERE
to_char(to_date('&2') + rnum - 1, 'DY') NOT IN ( 'SAT', 'SUN' )
AND NOT EXISTS (
SELECT
NULL
FROM
exclude_dates
WHERE
no_work = trunc(to_date('&2') + rnum - 1)
);
I have a table called
TICKETS
that contains columns named
ID, UPDATED_AT
I want to create a view that uses the above script to return
ID, AGE
where age is the output of the script above.
You code has a few weaknesses.
There is no need for CAST(current_timestamp AS DATE).
If you need the current DATE then simply use TRUNC(SYSDATE)
You don't need to select from all_objects. Better use hierarchical query
SELECT LEVEL as rnum FROM dual CONNECT BY LEVEL <= ...
Using to_date('&2') without a format is usually bad. Either your input value is a string, then you should include the format, e.g. to_date('&2', 'YYYY-MM-DD') or your input value is a DATE, then simply use &2 - never use TO_DATE() on a value which is already a DATE!
Final query could be this one - assuming input parameter is a DATE value:
WITH t AS (
SELECT LEVEL as d
FROM dual
CONNECT BY LEVEL <= TRUNC(SYSDATE) - the_day)
SELECT COUNT(*) AS buisiness_days
FROM t
WHERE TO_CHAR(the_day + d - 1, 'DY', 'NLS_DATE_LANGUAGE = american') NOT IN ('SAT', 'SUN')
AND NOT EXISTS (
SELECT 'x'
FROM exclude_dates
WHERE no_work = TRUNC(the_day + d - 1)
)
However, for me it is not clear how you want to provide this as a view! You would need to create a separate view for each input date, or at least create a new view every day.
I would suggest to create a function:
CREATE OR REPLACE FUNCTION buisiness_days(the_date IN DATE) RETURN INTEGER AS
ret INTEGER;
BEGIN
WITH t AS (
SELECT LEVEL as d
FROM dual
CONNECT BY LEVEL <= TRUNC(SYSDATE) - the_date)
SELECT COUNT(*) AS buisiness_days
INTO ret
FROM t
WHERE TO_CHAR(the_date + d - 1, 'DY', 'NLS_DATE_LANGUAGE = american') NOT IN ('SAT', 'SUN')
AND NOT EXISTS (
SELECT 'x'
FROM exclude_dates
WHERE no_work = TRUNC(the_date + d - 1)
);
RETURN ret;
END;
The function will return a list of dates between the date range you provide so the dates don't have to be stored in a table.
CREATE OR REPLACE TYPE nt_date IS TABLE OF DATE;
/
CREATE OR REPLACE FUNCTION generate_dates_pipelined(
p_from IN DATE,
p_to IN DATE
)
RETURN nt_date PIPELINED DETERMINISTIC
IS
v_start DATE := TRUNC(LEAST(p_from, p_to));
v_end DATE := TRUNC(GREATEST(p_from, p_to));
BEGIN
LOOP
PIPE ROW (v_start);
EXIT WHEN v_start >= v_end;
v_start := v_start + INTERVAL '1' DAY;
END LOOP;
RETURN;
END generate_dates_pipelined;
/
To exclude holidays you need to know what dates they fall on so there needs to be a holiday table.
create table holidays(
holiday_date DATE not null,
holiday_name VARCHAR2(20),
constraint holidays_pk primary key (holiday_date),
constraint is_midnight check ( holiday_date = trunc ( holiday_date ) )
);
INSERT into holidays (HOLIDAY_DATE,HOLIDAY_NAME)
WITH dts as (
select to_date('25-NOV-2021 00:00:00','DD-MON-YYYY HH24:MI:SS'), 'Thanksgiving 2021' from dual union all
select to_date('29-NOV-2021 00:00:00','DD-MON-YYYY HH24:MI:SS'), 'Hanukkah 2021' from dual
)
SELECT * from dts;
This query will provide the count of days between the range, number of working days and number of holidays in the range.
SELECT COUNT (*) AS total_days
, COUNT ( CASE
WHEN h.holiday_date IS NULL
AND d.column_value - TRUNC (d.column_value, 'IW') < 5
THEN 'Business Day'
END
) AS business_days
, COUNT (h.holiday_date) AS holidays
FROM generate_dates_pipelined (DATE '2021-11-01', DATE '2021-11-30') d
LEFT JOIN holidays h ON h.holiday_date = d.column_value;
This query will provide a list of dates excluding sat, sun and holidays that fall between the range.
SELECT
COLUMN_VALUE
FROM
TABLE(generate_dates_pipelined(DATE '2021-11-01',
DATE '2021-11-30')) c
where
to_char(COLUMN_VALUE, 'DY') NOT IN ('SAT', 'SUN')
AND NOT EXISTS (
SELECT 1
FROM holidays h
WHERE c.COLUMN_VALUE = h.holiday_date
);
You don't need a function or to use a row generator function and can calculate the number of business days:
CREATE VIEW business_day_ages (ID, AGE) AS
SELECT id,
( TRUNC( SYSDATE, 'IW' ) - TRUNC( updated_at, 'IW' ) ) * 5 / 7
-- Number of full weeks.
+ LEAST( SYSDATE - TRUNC( SYSDATE, 'IW' ), 5 )
-- Add part weeks at the end.
- LEAST( updated_at - TRUNC( updated_at, 'IW' ), 5 )
-- Subtract part weeks at the start.
- COALESCE(
( SELECT SUM(
LEAST(no_work + INTERVAL '1' DAY, SYSDATE)
- GREATEST(no_work, updated_at)
)
FROM exclude_dates
WHERE no_work BETWEEN TRUNC(updated_at) AND SYSDATE
),
0
)
-- Subtract the holiday days.
FROM tickets;
Or, if you are not calculating using part days then you can simplify it to:
CREATE OR REPLACE VIEW business_day_ages (ID, AGE) AS
SELECT id,
( TRUNC( SYSDATE, 'IW' ) - TRUNC( updated_at, 'IW' ) ) * 5 / 7
-- Number of full weeks.
+ LEAST( TRUNC(SYSDATE) - TRUNC( SYSDATE, 'IW' ), 5 )
-- Add part weeks at the end.
- LEAST( updated_at - TRUNC( updated_at, 'IW' ), 5 )
-- Subtract part weeks at the start.
- COALESCE(
( SELECT 1
FROM exclude_dates
WHERE no_work BETWEEN TRUNC(updated_at) AND TRUNC(SYSDATE)
),
0
)
-- Subtract the holiday days.
FROM tickets;
db<>fiddle here
how to get previous month or last two month data in oracle.
My date format is YYYY,MM,DD.
from google search i got those solution,
select * from IM_LAPTOP
where ADD_DATE >= add_months(sysdate, -12);
select *
from IM_LAPTOP
where ADD_DATE between add_months(trunc(sysdate,'mm'),-1) and last_day(add_months(trunc(sysdate,'mm'),-1));
But its showing not a valid month
My date format is YYYY,MM,DD
Unless you are using a string to store dates then, no, it is not; a DATE is a binary data type (consisting of 1-byte for each of: century, year-of-century, month, day, hour, minute and second and it always has those components) and it has no format.
how to get previous month or last two month data in oracle
To get the data from 2 months before this instant in time (i.e. if it is now 2021-04-05 16:39:24 and you want it from 2021-02-05 16:39:24, two months prior) then:
SELECT *
FROM your_table
WHERE date_column >= ADD_MONTHS( SYSDATE, -2 )
To get the data starting from midnight on the 1st day of last month:
SELECT *
FROM your_table
WHERE date_column >= ADD_MONTHS( TRUNC( SYSDATE, 'MM' ), -1 )
If you only want the data from the preceding month then:
SELECT *
FROM your_table
WHERE date_column >= ADD_MONTHS( TRUNC( SYSDATE, 'MM' ), -1 )
AND date_column < TRUNC( SYSDATE, 'MM' )
If your "date" is actually a VARCHAR2 column with the format YYYY,MM,DD then you should change it to a DATE column but if for some reason you cannot then at least the characters are in order of highest-to-least significance and you can perform an alphanumeric comparison and just wrap the right-hand side of the filters in TO_CHAR:
SELECT *
FROM your_table
WHERE date_column >= TO_CHAR( ADD_MONTHS( SYSDATE, -2 ), 'YYYY,MM,DD' )
i need to get the employees that hired in the first half in the last month of a quarters
like i need the employees that hired from(1/3 to 15/3) and (1/6 to 15/6) same in months 9 and 12
You can use MONTHS_BETWEEN and TRUNC:
If you want the rows where the instant of the hire_date is in the first half of the month of the 3rd month of the quarter then:
SELECT *
FROM hr.employees
WHERE MONTHS_BETWEEN( hire_date, TRUNC( hire_date, 'Q' ) ) BETWEEN 2 AND 2.5;
If you want the rows where the entirety of the day of the hire_date is within the first half of the month of the 3rd month of the quarter then:
SELECT *
FROM employees
WHERE MONTHS_BETWEEN(
TRUNC( hire_date ) + INTERVAL '23:59:59' HOUR TO SECOND,
TRUNC( hire_date, 'Q' )
) BETWEEN 2 AND 2.5;
or, if you want to manually set the bounds:
SELECT *
FROM employees
WHERE EXTRACT( MONTH FROM hire_date ) IN ( 3, 6, 9, 12 )
AND EXTRACT( DAY FROM hire_date ) BETWEEN 1 AND 15;
db<>fiddle here
How can I get data of the current week in Oracle? Assume that the week goes from Sunday to Saturday
SELECT * FROM TABLENAME
WHERE DATEFIELD IS {WITHIN CURRENT WEEK THAT GOES FROM 12AM ON SUNDAY TO 11:59PM ON SATURDAY}
Use Oracle trunc(sysdate,'IW') returns the first day of the week and add 6 to get the end of week.
-- not tested
SELECT * FROM TABLENAME
WHERE DATEFIELD >= trunc ( sysdate, 'iw' )
AND DATEFIELD < trunc ( sysdate, 'iw' ) + 5
I am trying to figure out how to create an SQL query that will check for (:FROM_DATE) and (:TO_DATE) parameters and if NULL to put the past month dates in for the two values, and if not NULL to accept whatever values are entered in the parameters.
For example:
if the user enters (01-JAN-17) as FROM_DATE, and (31-JAN-17) as TO_DATE, I want the query to not automatically pass any values for the TO_DATE and FROM_DATE.
if the user does not enter any values for TO_DATE and FROM_DATE or there are NULL values passed in, I want the query to automatically enter the the past months values (i.e., if query is run July 1st 2017, the FROM_DATE would be 01-JUN-17 and the TO_DATE would be 30-JUN-17).
I was hinted to use a coalesce statement to handle multiple values and NULLS (i.e., AND ( (coalesce(null, :P_ORG) is null) or (ORG.ORGANIZATION_ID in :P_ORG)))???
Any help would be greatly appreciated.
Something like:
SELECT *
FROM your_table
WHERE your_date_column BETWEEN TO_DATE( :from_date, 'DD-MON-YYYY' )
AND TO_DATE( :to_date, 'DD-MON-YYYY' )
OR ( ( :from_date IS NULL OR :to_date IS NULL )
AND your_date_column BETWEEN ADD_MONTHS( TRUNC( SYSDATE, 'MM' ), -1 )
AND TRUNC( SYSDATE, 'MM' ) - 1
);
If either (or both) :from_date or :to_date is NULL then the dates will be compared to the previous month.
If your table has dates where the time component is not always set to midnight then you will need to use:
SELECT *
FROM your_table
WHERE your_date_column BETWEEN TO_DATE( :from_date, 'DD-MON-YYYY' )
AND TO_DATE( :to_date, 'DD-MON-YYYY' )
OR ( ( :from_date IS NULL OR :to_date IS NULL )
AND your_date_column >= ADD_MONTHS( TRUNC( SYSDATE, 'MM' ), -1 )
AND your_date_column < TRUNC( SYSDATE, 'MM' )
);
Proof of concept: consider the following query, where we have dates and values, and we want to sum the values for the dates that fall between :from_date and :to_date. If either of them is null, the query will use the first day of the prior month for from_date and the last day of the prior month for to_date. Note that this will cause problems if one date is given an actual value and the other is left null - you didn't explain how you would want that handled. But that's a different issue.
I use SQL developer, and in it I don't know how to pass in dates; I show passing in strings, and converting them to dates.
with
test_data ( dt, val ) as (
select date '2017-05-29', 200 from dual union all
select date '2017-06-13', 150 from dual union all
select date '2017-06-18', 500 from dual
)
select sum(val) as sum_val
from test_data
where dt between coalesce(to_date(:from_date, 'yyyy-mm-dd'),
add_months(trunc(sysdate, 'mm'), -1))
and coalesce(to_date(:to_date , 'yyyy-mm-dd'), trunc(sysdate, 'mm') - 1)
;
Yes, you can use COALESCE (or Oracle's NVL). When a parameter is null, replace it with the default date.
select *
from mytable
where mydate >= coalesce(:from_date, trunc(sysdate - interval '1' month), 'month')
and mydate <= coalesce(:to_date, last_day(sysdate - interval '1' month));