I want to select a column which is from datatype "datetime" in Orcale DB in date format.
column
1/31/2006 22:00:00 AM
I tried the following queries and got errors like below
select DATE_FORMAT(column, 'YYYY-MM-DD') as column from table
ORA-00904: "DATE_FORMAT": invalid identifier
select TO_DATE(column, 'YYYY-MM-DD') as column from table
ORA-00918: column ambiguously defined
select TO_DATE(column, 'YYYY-MM-DD') from table
org.apache.avro.SchemaParseException: Illegal character in: to_date(column,'yyyy-mm-dd')
What is the right syntax for this?
You should be using a to_char to convert a date to a specific string format.
select to_char(dat_column, 'YYYY-MM-DD') as column from table;
If you are expecting a date as return type, then that is more about the client you are using. You could set a session level parameter like this:
alter session set nls_date_format='YYYY-MM-DD';
In Oracle, there is no "datetime" data type. There is either DATE or TIMESTAMP and they both have year, month, day, hour, minute and second components (TIMESTAMP also has optional fractional seconds and time zone components). Both of those data types are binary data types and do NOT store a format.
If you want to set the time component of a DATE to midnight then use:
SELECT TRUNC(date_column) AS date_column_at_midnight
FROM table_name;
If you want to display a DATE column with only year, month and day components then you need to convert to a data type that does support a formatting; i.e. a string.
SELECT TO_CHAR(date_column, 'YYYY-MM-DD') AS formatted_date_string
FROM table_name;
To convert a column of datatype TIMESTAMP to datatype DATE use the CAST function (docs) :
select CAST(column AS DATE) as dt_column from table
The error "ORA-00918: column ambiguously defined" indicates that the SQL engine is unable to determine what table the column belongs to. To avoid that make sure to alias all joined tables and use the alias for those columns. Like this:
select CAST(t1.column AS DATE) as dt_column from table t1
Related
I was testing Sprak 3 upgrades in AWS Athena and need to check date columns whether timestamp format is proper or not,Can any one please give me query to check whether date columns has any Values other than Timestamp format
Assuming that you have a varchar column you can try using date_parse wrapped in try:
select *
from table
where try(date_parse(string_column, 'your_expected_format')) is null -- assuming no original nulls in column
Or via try_cast for "standard" format:
select *
from table
where try_cast(string_column as timestamp) -- assuming no original nulls in column
I'm trying to insert some data into a Teradata database, this information has been originally exported from an Oracle instance, but I have a little problem with the dates, here's an example of the data:
CO_ID | CUSTOMER_NAME | JOIN_DATE
1022945 | John Carpenter | 07/03/2018 01:55:24 p.m.
And this is the create table statement:
CREATE TABLE transact (
co_id varchar(50),
user_name varchar(50),
join_date date);
Teradata is throwing error every time I execute the insert statement for example:
expected something between a string and a unicode character ...
How can I insert the information keeping the original format of the date, I have to modify the create table or there's any other trick?
thank you.
In Teradata a date is a date (without the time portion). For the insert you have to convert the input string into a valid date.
Somthing like
select cast('07/03/2018' as date format 'DD/MM/YYYY');
select cast(substr(input.join_date,1,10) as date format 'DD/MM/YYYY');
If you cast a string as date then the format clause is a description how the string parts are used to convert into a internal date format.
If you select from a date column the format clause is used to describe the wanted output format.
select cast( cast('07/03/2018' as date format 'DD/MM/YYYY') as date format 'YYYY-MM-DD')
If you add a format clause to your table definition join_date date 'DD/MM/YYYY', you define the default format for that column, which is used as the output format whenever no explicit format is given.
If you want to use the time portion too, your target column needs to be a timestamp
select cast( cast(regexp_replace('07/03/2018 01:55:24 p.m.','\.m\.', 'M')
as timestamp format 'MM/DD/YYBHH:MI:SS BT') as timestamp format 'YYYY-MM-DDBHH:MI:SS')
format phrase documentation
I'm in coldfusion working with data from an sql table, and using a query of queries to join the sql data to some data from an oracle database. Unfortunately, I need to order them by date, and the oracle table has two columns - DRWR_DATE which is of type DATE and TIME which is of type VARCHAR2. The two columns put into a string read 17-JUN-03 16:35:18 or something similar. I need to return these two columns as a TIMESTAMP so I can use query of queries to sort them.
Also, I think I read that a date column holds the time in Oracle anyway? I don't have much experience with Oracle so I am unsure how best to do this.
Try this:
SELECT to_timestamp(
to_char( drwr_date,'dd-mon-yy') ||' '|| time
, 'dd-mon-yy hh24:mi:ss'
)
FROM your_table
Try using TO_TIMESTAMP function:
SELECT TO_TIMESTAMP('17-JUN-03 16:35:18', 'DD-MON-RR HH24:MI:SS')
FROM DUAL;
you can try converting the column to date as the following:
TO_DATE(column,'DD-MON-YY HH24:MI:SS')
The first parameter takes your column and the second parameter specifies the date format that is used
If all you have to do is order by date, all you need is an order by clause.
order by drwr_date, time
You don't have to cast these to anything, unless you need to do so for another reason. Remember that a date datatype is essentially a floating point number. This, "17-JUN-03" is simply how your client is displaying it.
I have a field with the data type of number which represents a date
eg: 20060421
I have two other fields in other table with the data type of Date.
I want to retrieve the rows from the first table that lies between those two Dates present in the other table.
How Can I compare the date in simple number format in a between clause of two Dates of data type Date.
I think the simplest solution for you here is to just cast the numeric date into a date type and then just use the built-in BETWEEN function.
-- sample cast
select to_date(to_char(20060801),'YYYYMMDD') from dual
so your solution should look something like this:
select *
from numericDatesTable t1, otherTable t2
where to_date(to_char(t1.date),'YYYYMMDD') between t2.date1 and t2.date2
I'm using Oracle 11g Schema
I want to select the month and day from a date concatenate it and put it into a column.
The syntax I have here makes sense but its throwing an error of..
INSERT INTO OB_SELECT_LST12_SPG WED
VALUES (((TO_CHAR(TO_DATE('RET_DATE', MM))||( TO_CHAR(TO_DATE('RET_DATE', DD)));
"SQL Error: ORA-00907: missing right parenthesis"
Any help is greatly appreciated.
Thanks.
Some points first...
Your table name has a space in in
Your not enough columns error is caused by you having more than one column in the table
You really shouldn't be doing this at all
If ret_date is a column don't encapsulate it in quotation marks (') as you won't be able to convert the string 'ret_date' into a date.
However, assuming ret_date is a string that looks like 13-06-2012
insert into ob_select_lst12_spg_wed (my_column)
values(to_char(to_date(:ret_date,'dd-mm-yyyy'),'mmdd'));
If ret_date is a date data-type then you can remove the inner conversion.
insert into ob_select_lst12_spg_wed (my_column)
values(to_char(:ret_date,'mmdd'));
to_char and to_date both make use of datetime format models, which have a number of options.
Please don't do this though. Always store dates as dates
From your comments ret_date is a date and the column wed is a character. You're getting the error bind variable not declared because you haven't specified the variable. I'm going to assume that ret_date is in another table as it's a date, in which case lose the values key-word and insert directly from that table:
insert into ob_select_lst12_spg (wed)
select to_char(ret_date,'mmdd')
from the_other_table
This shouldn't be required though, you can always convert a date into whatever you want on exit from the database. If you don't store it as a date in the database then it's easy for errors and incorrect values to creep in. I personally would change the column wed to a date, in which case your query becomes the very simple:
insert into ob_select_list12_spg (wed)
select ret_date
from the_other_table
You can then use the correct datetime format model for your needs when selecting from the database.
Sample query to get date, month from date column:
Select ((To_Char(to_date('01-FEB-73','dd-mon-yy'), 'MM'))
||( To_Char(to_date('01-JAN-73','dd-mon-yy'), 'dd')))
from dual;
if RET_DATE is date datatype then use
insert into table_name (columname)
Select ((To_Char(RET_DATE, 'MM'))
||( To_Char(RET_DATE, 'dd')))
from dual;
You are missing extra parentheses. Number of opened ( was 8 and closed ) was 5
INSERT INTO OB_SELECT_LST12_SPG(WED)
VALUES ((TO_CHAR(TO_DATE(RET_DATE, MM)))||( TO_CHAR(TO_DATE(RET_DATE, DD))));
Update
Make sure other columns are not required (i.e. Allow NULLs)