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How do I know which datatype will accept Null value and which datatype will not accept null value in SQL.
which datatype will accept null value??
NULL means ABSENCE of data. Means any datatype without value can have NULL value.
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I need to convert "2022-04-29T07:20:32.727Z" to "2022-04-29 07:20:32".
I am quite new to SQL and haven't found the solution.
You can use cast()
select cast('2022-04-29T07:20:32.727Z' as datetime)
Output
2022-04-29 07:20:32.727
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How to convert a string (43677) to date in SQL(Redshift)? (I'm trying to convert strings, which are number format of any particular date in excel)
It depends what day you want, but I think:
select dateadd(day, 43677, '1899-12-30')
This interprets the value as an Excel date. It produce 2019-07-31.
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I want to find if the difference between 2 columns. How do I achieve that?
For example,
select(col1-col2) output is 1
select(col2-col1) output is -1
Is there a way to get just the difference as 1 without the negative (-) sign?
use abs() function
select abs(col2-col1) as diff
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You can I display special Unicode characters in my result set on my SQL Server?
e.g. How can i display those characters ☺♦♦?
Well due to the fact that your question is very unspecific here are some solutions.
You need to specify a string as unicode string. This can be achieved by adding an N in front of the string. See example:
SELECT N'☺♦♦' as a, '☺♦♦' as b
Result:
a b
---- ----
☺♦♦ ???
If you want to store those symbols, you need a type as nvarchar or nchar.
Hopefully this helps you.
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How to convert MM/DD/YY (for example: 12/23/14) to YYYY-MM-DD (for example: 2014-12-23) in MS SQL Server 2012?
CONVERT(VARCHAR(10),GETDATE(),126)
If you're looking to load the data into a column that is the Date datatype, then you can cast a string as a date:
CAST('12/23/14' AS DATE)