--Datetime format = '2013-10-21 12:12:12.000'
--Obviously poor syntax but you can see what Im trying to do
select personnum, convert(decimal, shiftEndDate, 4)-convert(decimal, ShiftStartDate, 4) as ShiftInSeconds
from dbo.Time
where shiftStartDate between '2013-10-14 00:00:00.000' and '2013-10-20 23:59:59.000'
you can use DATEFROMPARTS to create date type from shiftEndDate and then cast you condition strings to date/datetime (sql server should do this automatically, if no - use CAST/CONVERT)
Related
Im currently working on a database that have been initialize with dates in varchar instead of using datetime format.
I'm supposed to compare the dates of the DB with an input date (31/05/2020 actually).
Here is the part of my code that makes troubles :
AND Convert(datetime,t1.fin_contrat, 103) > Convert(datetime, '31/05/2020', 103 )
But I've an error from PhpMyAdmin which is : #1064 - Syntax error near 't1.fin_contrat, 103) >= Convert(datetime, '31/05/2020', 103 ) GROUP BY siren OR' line 1
According to this link : https://learn.microsoft.com/fr-fr/sql/t-sql/functions/cast-and-convert-transact-sql?view=sql-server-ver15#implicit-conversions varchar should be able to being converted directly to datetime value.
I tried to use WHERE instead of AND it doesn't work. So I'm out of option, and i'm seeking for ideas.
Thanks for your help
In MySQL, you want something like this:
where date(t1.fin_contrat) = str_to_date('31/05/2020', '%d/%m/%Y')
This corresponds to the code in your question, but adapted for MySQL.
The fonction CONVERT is not the same betweeen Microsoft SQL. and Mysql
https://dev.mysql.com/doc/refman/5.7/en/cast-functions.html#function_convert
To convert a string. to a date. you must use STR_TO_DATE
https://dev.mysql.com/doc/refman/5.7/en/date-and-time-functions.html#function_str-to-date
ps:
Every sql server software ( Oracle , Redshift , Posgtres , Mysql , MariaDB , MS SQL server , Sqllite , ...) has his own SQL dialect . Usually simple queries are portable but more complex or using functions queries must be rewriten .
I am working on SAP HANA Studio and have tried to run SQL command that converts an entire column of field, nvarchar, into one of field, date.
My dates have format: dd-mon-yyyy (i.e '29-Mar-1997') with field nvarchar(11).
I have looked at previous questions and SQL command documentation (for functions like CAST, CONVERT, TO_DATE, STR_TO_DATE) and have not gotten a solution.
Typical errors I get are: Function not recognized, or, Error while parsing Service Date as DATE at function to_date().
Any suggestions?
Thanks
-Diana
Try TO_DATE():
select to_date(col, 'DD-MON-YYYY')
Obviously your database driver/layer in SAP HANA does not support all mySQL functions.
Please connect to your database directly (using command-line or a gui like HeidiSQL) and create a view in your database:
CREATE VIEW view_tablename AS
SELECT STR_TO_DATE(`Service Date`, '%d-%b-%Y') AS ServiceDateDt, * FROM tablename
Then use view_tablename instead of tablename in all your queries - because view_tablename has the additional date field "ServiceDateDt".
The SQL Server code below returns the time-date of the last update to a table (any row.)
SELECT OBJECT_NAME(OBJECT_ID) AS DatabaseName, last_user_update
FROM sys.dm_db_index_usage_stats
WHERE OBJECT_ID=OBJECT_ID('TableName')
AND (Index_ID = 1)
If I use this in a TFDQuery, what is the datatype FDQuery1.FieldByName('last_user_update')?
If I want to store and compare this value at different times in a Delphi variable, what Delphi datatype should I assign it to, Double?
You use a TDateTime for this.
Although the TDateTime is represented internally by a double you don't use a double because you'll miss out on all the date/time support.
The code goes like this.
var
LastUpdate: TDateTime;
begin
//Do query etc.
...
LastUpdate:= MyQuery.FieldByName('last_user_update').AsDateTime;
Note that SQL server 7 and before do not have support for TDate. So if you just want the date part this code will fail in SQL server 7.
LastUpdate:= MyQuery.FieldByName('last_user_update').AsDate;
Just get the full DateTime and strip of the Time part later.
However, you're working with 2008 so just extracting the date will work fine for you.
Here's a list of DateTime functions: http://www.delphibasics.co.uk/ByFunction.asp?Main=DatesAndTimes
Is there any sql command which I can insert into the stated query so I can convert the timestamp. Although it could be done separately which I have seen so far but I am trying to find something which I can add to the stated query as that would be helpful because I am using other queries to retrieve the data as well. If you any other questions please do mention. Addition: rating_timestamp contains both time and date.
SELECT rating_id,
rating_postid,
rating_posttitle,
rating_rating,
rating_timestamp,
rating_username,
rating_userid
FROM wp_ratings;
In cases of date arithmetic, it is especially important to specify the DBMS you are using - Oracle's math is different from Postgres' math is different from SQL Server's math is different from MySQL's math is...
This assumes that you are using SQL Server. Since there is no built in command to do this conversion, you need to create your own function to do that. The function below takes a UNIX / Linux timestamp and converts it to an SQL Server datetime.
CREATE FUNCTION dbo.fn_ConvertToLocalDateTime (#unixdate BIGINT)
RETURNS DATETIME
AS
BEGIN
DECLARE #UTCTimeOffset BIGINT
,#LocalDatetime DATETIME;
SET #UTCTimeOffset = DATEDIFF(second, GETUTCDATE(), GETDATE())
SET #LocalDatetime = DATEADD(second, #unixdate + #UTCTimeOffset, CAST('1970-01-01 00:00:00' AS datetime))
RETURN #LocalDatetime
END;
GO
I wast sure about about Sql version before. This worked perfectly for me.
FROM_UNIXTIME(rating_timestamp,'%h:%i:%s %D %M %Y')
java datetime (date.getTime()) is stored as string in mysql field.
How can we convert this to sql date using sql query. I am using mysql database.
Is there any sql function available?
For example - This is stored (1416231812348) for today's date in db.
Thanks for suggestions.
Java is returning the date as a long, to convert it you can use:
SELECT FROM_UNIXTIME(event_time) FROM MY_TABLE
If you get an error, try the following (after testing, I can see that your data is stored in milliseconds so you need to use this method):
SELECT FROM_UNIXTIME(event_time/1000) FROM MY_TABLE
(Change event_time to be the field name in your table and MY_TABLE to be the table name.)
Here is a SQLFiddle example that shows it working.
Here is an answer that gives you formatting options as well:
http://notsoyellowstickies.blogspot.co.uk/2011/11/converting-long-into-datetime-mysql.html
There is a java.sql package, that has time included. You can send it straight into your database without needing to convert it.
This may be a more pre-emptive solution than converting a date string from Java, into time in MySQL.
A similar question was answered and may be able to help you out here:
A datetime equivalent in java.sql ? (is there a java.sql.datetime ?)
most probably you have recorded from:
System.currentTimeMillis()
so:
select DATE_FORMAT ( from_unixtime( your_table_field / 1000 ) , '%e %b %Y');
you can change the date format as you like.