Question

Goal:
Gain datatype date with year and month

Problem:
Need to help to convert varchar value into datatype date

Unfortunatley, no day is included in the data from column. Year and month only.

I tried converting into date without using day but I failed.

Varchar(10) column data

data    
-------    
1997-05   
1984-12   
1988-11    
1984-10    
1984-02  
1984-01    
1984-04

Answer 1

Assuming returning the first day of the given month is ok, you can use:

SELECT CONVERT(DATE, data + '-01') FROM dbo.table;

As others have suggested, you can’t have a date without a day.