I have a database with date in DD-MM-YY and i would need it to convert to YYYY-MM-DD so it could be used for date manipulation? Does anyone have any idea how it could be done with sqlite query?
I know the comments say you solved your issue, but for the benefit of others coming across this...
It would depend on the type of database where your original DD-MM-YY date was stored as to how to grab it. It would not be SQLite, since SQLite stores it as YYYY-MM-DD HH:mm:ss (http://sqlite.org/lang_datefunc.html), as you said you needed. But let's say you have a C# application that can reach in and grab your original date as DateTime badDate:
string goodDateString = badDate.ToString("YYYY-MM-DD HH:mm:ss");
string sql = "INSERT INTO MySQLiteTable (MyDateColumn) VALUES ('" + goodDateString + "')";
And then you use that sql with a SQLiteCommand and your connection string (path to your SQLite DB) to update SQLite.
Related
I'm new to TIBCO BW6. This is my scenario. I have a .csv file, and one of my columns is a string in this format: '31/08/2021 15:18:00'
I created a process that reads my file and inserts a new row into my database. I have a problem with the date.
In my palette JDBC Update, the date is a timestamp. When I match the input, the right pattern for matching my string in datetime is pattern yyyy-mm-dd hh:mm:ss.
To do this kind of thing the best solution is generally to use the SQL database formatting functions in your SQL query.
Something like this (for ORACLE) :
insert into table_name
(my_date_field)
values (TO_DATE('2022/01/23 11:25:44', 'yyyy-mm-dd hh24:mi:ss'));
In BusinessWorks the query would look like this and you would have to map the value of the field corresponding to the '?' with your actual timestamp :
insert into table_name
(my_date_field)
values (TO_DATE(?, 'yyyy/mm/dd hh24:mi:ss'));
I am using SQLite.
In my database, I have a integer column value like 20050819. I would like to convert this as date column as like 2005-08-19.
I can achieve my requirement when using the function CONVERT(columnName, DATETIME) in MySQL server. But I need the same result in SQLite.
Is this possible in SQLite query?
You basically have to break apart the date:
select printf('%4d-%02.2d-%02.2d',
columnname/10000, columnname%10000/100, columnname%100)
from tablename;
P.S.
If you have the choice, you will be far better off storing the date in ISO standard format ('YYYY-MM-DD') in the database in the first place.
currently, i have a datetime object
DateTime theDateTime = DateTime.ParseExact(dateAndTime, "d MMMM yyyy hh:mm tt", provider);
which successfully converts it into a datetime (from a string) to become for example :
7/6/2012 9:30:00 AM
How do i convert this to become 2012/07/06 09:30:00 (24hr format)? So that i can insert it into the database using C#??
PS: I'm using Sybase SQL Anywhere 12, and from what I've read, they neeed the format to be in year/months/day and the time to be in 24hr format right? Please correct me if I'm wrong.
The DateTime itself does not have a format. The date and time are stored internally as a number. Usually the classes of the database provider take care of converting a DateTime to the correct format.
If Sybase will only accept the date formatted as a string you will need to use the DateTime.ToString method and format it with the correct format string.
How are you building your insert command? Are you using database parameters or just building a string containing the insert statement?
SQL Anywhere 12 has a default date format of YYYY-MM-DD HH:NN:SS.SSS
This can be configured/changed with the timestamp_format database option however:
timestamp_format option
The setting can be permanently changed through SQL like:
SET OPTION PUBLIC.timestamp_format = '<format here>';
Or temporarily changed (per connection basis) like:
SET TEMPORARY OPTION timestamp_format = '<format here>';
Of course, if you already have a datetime object in your code, you should be able to pass the value into a parameterized query. It doesn't have to be passed as a string.
This seems like it should be really obvious, but how can I put a DateTime object into an MSSQL database? When I convert it to a string, it keeps adding "-7:00" at the end for the time zone offset and so the query isn't accepted. How can I fix this?
How are you trying to insert the DateTime into the database? If you're converting it to a string to be passed into a stored procedure (bad idea; better to use the date SQL type), then you should first convert all DateTime objects to UTC using the .net method ToUniversalTime. Once in UTC, the DateTime will have no timezone offset.
Assuming you are using C#, I would suggest the following:
SqlCommand cmd = new SqlCommand("INSERT INTO yourTable (dateTimeColumn) VALUES (#value)", connection);
cmd.Parameters.AddWithValue("#value", yourDateTimeObject);
cmd.ExecuteNonQuery();
This will work for inserting the value. If not, please post your code to show where the error is because that means that the datetime object you are getting your value from is passing in the data wrong.
I have a textbox which displays the date as 01-May-2011 but the database coumis in format of datetime ... how to enter date in date time column of database. ..
how to wite the sqlquery for this ?
You can convert that format to a DateTime like this
string dateString = "01-May-2011";
string format = "dd-MMM-yyyy";
var result = DateTime.ParseExact(dateString, format, CultureInfo.InvariantCulture);
if you're using LINQ to SQL or even ADO with a parameter of type DateTime, the conversion to a format that SQL understands will be done automatically for you.
If you're building the SQL by concatenating a string manually (not recommended!) you should try to reconvert to a string in the format 'yyyyMMdddd' (corrected as per AdaTheDev's comment, notice the single quotes). Other formats may or may not be recognized by sql depending on the language settings on both your client and your SQL Server
SQL Server is pretty good about taking in datetime values. If you pass the date as a parameter you can put quotes around it ('01-May-2011') and ignore the time. The database will automatically fill in a default time so that you don't have to worry about it.
Pass field value as nvarchar to database and use following to cast it to datetime.
Declare #dt nvarchar(20)
SET #dt = '01-May-2011'
select cast(#dt as datetime)
One thing to be aware of is that dates w/o time will be interpreted as May 1 2011 12AM. IE, without a time specified, SQL Server will always set the time to midnight. So if you have just the date as a field and you want records from May 1, you can't do
WHERE datefield = '5/1/2011'
This will find records where the datefield is May 1st Midnight. You have to do
WHERE datefield >= '5/1/2011' and datefield < '5/2/2011'
This doesn't really pertain to your question, but I've seen it trip up a LOT of people. Myself included.
Just convert it to dateTime
DateTime _ConvertedDate = Convert.ToDateTime(txtDate.Text);
this converts into datetime