I have a simple yet frustrating problem in hive.
I want to basically say , only show me the orders_date older than today -30.My order dates are VARCHAR and the compared to date is integer.
select *
from my_table
where Order_Date > cast(date_format(current_date - interval '30' day,'%Y%m%d') as int);
ERROR: line 3:16: '>' cannot be applied to varchar, integer
Related
I have this query in oracle:
DELETE FROM my_table
WHERE to_date(last_update, 'DD/MM/YYYY') < to_date('01/01/2000', 'DD/MM/YYYY');
when I run this, I get this error:
ORA-01841: (full) year must be between -4713 and +9999 and must not be 0
there is not any 0 value in the table.
any one knows what is the problem?
I am assuming that you have stored your dates as a string with the DD/MM/YYYY format; it would be better if you stored them all as a DATE data type and then you would not have to do this conversion (and you would be using the most appropriate data type for the data).
From Oracle 12, you can use:
SELECT *
FROM my_table
WHERE TO_DATE( last_update, 'DD/MM/YYYY' DEFAULT NULL ON CONVERSION ERROR ) IS NULL;
To identify the rows that are raising that exception.
If you are already storing them as a DATE data type then don't use TO_DATE on a value that is already a DATE as TO_DATE expects a string so Oracle will implicitly cast your DATE to a string and then try to convert it back and your query is effectively:
DELETE FROM my_table
WHERE TO_DATE(
TO_CHAR(
last_update,
( SELECT value FROM NLS_SESSION_SETTINGS WHERE PARAMETER = 'NLS_DATE_FORMAT' )
),
'DD/MM/YYYY'
) < to_date('01/01/2000', 'DD/MM/YYYY');
And if the NLS_DATE_FORMAT and your format model do not match then you will get errors (or, worse, the query will succeed and your data will be inconsistent as it may have swapped days and months or months and years).
Instead, just use:
DELETE FROM my_table
WHERE last_update < DATE '2000-01-01';
If the datatype of last_update is date, don't use the to_date function:
DELETE FROM my_table
WHERE last_update < to_date('01/01/2000', 'DD/MM/YYYY');
I'm working on my table which is supposed to store data about rented cars.
And there are 3 important columns:
RENT_DATE DATE DEFAULT TO_DATE (SYSDATE, 'DD-MM-YYYY'),
DAYS NUMBER NOT NULL,
RETURN_DATE DATE DEFAULT TO_DATE(SYSDATE+DAYS, 'DD-MM-YYYY')
My problem is that RETURN_DATE column is giving me error:
00984. 00000 - "column not allowed here"
What i want is that RENT_DATE set automatically date when record is added.
DAYS column is to store for how much days someone is renting car.
And the last column should store date of when car should be returned.
Thank you for any type of help.
This doesn't make sense:
DEFAULT TO_DATE (SYSDATE, 'DD-MM-YYYY')
SYSDATE is already a date. TO_DATE requires a char, so this takes a date, Oracle implicitly turns the date into a char, and then TO_DATE converts it back to a date. This is risky/unreliable because it uses a hardcoded date format to operate on a date that has been implicitly turned to a string using the system default format, which might one day not be DD-MM-YYYY (you're building a latent bug into your software)
If you want a date without a time on it use TRUNC(SYSDATE)
The other problem doesn't make sense either: you're storing a number of days rented for and also the return date, when one is a function of the other. Storing redundant data becomes a headache because you have to keep them in sync. My person class stores my birthdate, and I calculate how old I am. I don't store my age too and then update my table every day/year etc
Work out which will be more beneficial to you to store, and store it, then calculate the other whenever you want it. Personally I would store the return date as it's absolute, rather than open to interpretation of "is that working days, calendar days? what about public holidays? if the start date is jan 1 and the rental is for 10 days, is the car brought back on the 10th or the 11th?"
If you're desperate to have both columns in your DB consider using a view to calculate it or a function based column (again, to calculate one from the other) so they stay in sync
All in, you could look at this:
create table X(
RENT_DATE DATE DEFAULT TRUNC(SYSDATE) NOT NULL,
RETURN_DATE DATE NOT NULL,
DAYS AS (TRUNC(RETURN_DATE - RENT_DATE) + 1)
)
I put the days as +1 because to me, a car taken on the 1st and returned on the second is 2 days, but you might want to get more accurate - if it's taken on the first and returned before 10am on the second then it's one day otherwise it's 2 etc...
Use a virtual column:
CREATE TABLE table_name (
RENT_DATE DATE
DEFAULT TRUNC( SYSDATE )
CONSTRAINT table_name__rent_date__nn NOT NULL
CONSTRAINT table_name__rent_date_chk CHECK ( rent_date = TRUNC( rent_date ) ),
DAYS NUMBER
DEFAULT 7
CONSTRAINT table_name__days__nn NOT NULL,
RETURN_DATE DATE
GENERATED ALWAYS AS ( RENT_DATE + DAYS ) VIRTUAL
);
Then you can insert values:
INSERT INTO table_name ( rent_date, days ) VALUES ( DEFAULT, DEFAULT );
INSERT INTO table_name ( rent_date, days ) VALUES ( DATE '2020-01-01', 1 );
And:
SELECT * FROM table_name;
Outputs:
RENT_DATE | DAYS | RETURN_DATE
:------------------ | ---: | :------------------
2020-09-12T00:00:00 | 7 | 2020-09-19T00:00:00
2020-01-01T00:00:00 | 1 | 2020-01-02T00:00:00
db<>fiddle here
I am using SAP BODS and I am trying to fetch data from an ORACLE server using SQL query transormation. Now The table has a column named latest_changed_date which is a datetime column. I only want yesterday and current day data from that table. Now since the column is datetime, I need to convert it to date, but when I am using to_date function I get the following error.
SELECT *
FROM ABC.TEST
WHERE TO_DATE(LATEST_CHANGED_DATE) = TO_DATE(SYSDATE-1)
The database error message is
ORA-01843: not a valid month
I tried giving date format in TO_DATE condition as below:
SELECT *
FROM ABC.TEST
WHERE TO_DATE(LATEST_CHANGED_DATE,'YYYY-MM-DD') >= TO_DATE(SYSDATE-1,'YYYY-MM-DD')
Here I got the error:
date format picture ends before converting entire input string
I used trunc function also and again got either:
not a valid month
or
inconsistent datatypes: expected NUMBER got DATE
Below is a sample data for the column. I just need data for current and day before data from the column.
Update: I think the main issue is that I am not able to determine the proper datatype for the column in the source table and currently I don't have an option to determine that.
Rather than trying to implicitly cast your dates to strings and convert them back using TO_DATE( string_value, format_model ) you can use TRUNC() to truncate SYSDATE to the start of the day:
SELECT *
FROM ABC.TEST
WHERE LATEST_CHANGED_DATE >= TRUNC( SYSDATE-1 )
this will work:
SELECT *
FROM ABC.TEST
where sysdate-LATEST_CHANGED_DATE<=sysdate-(sysdate-2);
for example take this:
ALTER SESSION SET NLS_DATE_FORMAT = ' DD-MON-YYYY HH24:MI:SS';
SELECT * FROM d061_dates ;
03-DEC-2018 17:44:38
25-AUG-2018 17:44:42
30-AUG-2018 17:44:46
01-DEC-2018 17:44:49
02-DEC-2018 17:46:31
SELECT * FROM d061_dates
where sysdate-a<=sysdate-(sysdate-2);
03-DEC-2018 17:44:38
02-DEC-2018 17:46:31
you have to take sysdate minus on both sides to get comparision by a number which is less than equal to 2 to get day and day before yesterday and its giving the correct output.
thank you!!!!!!!!!!!!!
there is a table INCASSO in my database:
CREATE TABLE "GEC_AP"."INCASSO"
("ID_INCASSO" VARCHAR2(50 BYTE) NOT NULL ENABLE,
"ID_FATTURA" VARCHAR2(50 BYTE) NOT NULL ENABLE,
"ID_PIANO_RATE" VARCHAR2(22 BYTE) DEFAULT -1 NOT NULL ENABLE,
"DATA_ESECUZIONE" DATE DEFAULT SYSDATE NOT NULL ENABLE,
...)
The primary key includes four fields:
CONSTRAINT "PK_INCASSO" PRIMARY KEY ("ID_INCASSO", "ID_FATTURA", "ID_PIANO_RATE", "DATA_ESECUZIONE")
It seems there is a duplicated record when I run the following query:
select id_incasso, id_fattura, id_piano_rate, data_esecuzione
from incasso
where id_incasso = 'TO_20110521258225'
But with another query, 0 records are extracted:
select id_incasso, id_fattura, id_piano_rate, data_esecuzione, count(*)
from incasso where id_incasso = 'TO_20110521258225'
group by id_incasso, id_fattura, id_piano_rate, data_esecuzione
having count(*) > 1
The database is on Oracle 11.2.0.1.0 and I'm using SQL Developer 4.1.1.19.
In SQL Developer, the date format is:
I would to know if the records are different or there is a format date problem in the editor. If the records are different based on the date, in which part of the date they are different? If it's a format date problem in the editor, how can I fix it?
Change the date format to DD-MON-YYYY HH24:MI:SS and you are likely to see the difference in that the dates have different centuries.
Using RR to format the year can hide that one date is 1911 and the other is 2011
Try:
SELECT TO_CHAR( DATE '2011-01-01', 'RR-MM-DD' ),
TO_CHAR( DATE '1911-01-01', 'RR-MM-DD' )
FROM DUAL
Both will output the same although they are different dates and will not be grouped together.
If the dates are still the same then look for additional spaces or other hidden characters in the strings; you can use LENGTH() to check the size of the strings or DUMP() to get the byte values of the contents:
select id_incasso,
id_fattura,
LENGTH( id_fattura ) AS f_length,
id_piano_rate,
LENGTH( id_piano_rate ) AS pr_length,
TO_CHAR( data_esecuzione, 'YYYY-MM-DD HH24:MI:SS' ) AS data_esecuzione
from incasso
where id_incasso = 'TO_20110521258225'
I've changed the date format used in SQL Developer to DD-MON-YYYY HH24:MI:SS
and the following query:
select id_incasso, id_fattura, id_piano_rate, data_esecuzione from incasso where id_incasso = 'TO_20110521258225'
show that the difference is in the year:
Thanks everyone.
I have a problem in Oracle, with a virtual column (I need the timestamp starting from a date column); here my example:
CREATE TABLE TBDATETIME(
DATETIME_1 DATE,
DATETIME_2 TIMESTAMP(9) GENERATED ALWAYS AS (
CAST( TO_CHAR(DATETIME_1, 'DD/MM/YYYY HH24:MI:SS')
|| '.' || TO_CHAR(DATETIME_1, 'FF9') AS TIMESTAMP(9))
) VIRTUAL
);
INSERT INTO TBDATETIME(DATETIME_1)
VALUES(SYSDATE);
COMMIT;
SELECT *
FROM TBDATETIME;
ORA-01821: date format not recognized
01821. 00000 - "date format not recognized"
*Cause:
*Action:
Where is the problem fetching data? I tried a lot of format masks, but nothing helps...
DATETIME_1 DATE
TO_CHAR(DATETIME_1, 'FF9')
That's the problem - DATE doesn't have fraction seconds
And it's dangerous to cast char to timestamp (the result depends on nls settings)
I suppose you want this:
CREATE TABLE TBDATETIME(DATETIME_1 DATE, DATETIME_2 TIMESTAMP(9) GENERATED ALWAYS AS (CAST(DATETIME_1 AS TIMESTAMP(9))) VIRTUAL);