Question

Using SQl Server 2000

Table

time (varchar)

2
1.5
3
5
2
2.5

...

I want to conver the time in datetime format like this 02:00 (HH:MM), 2.5 or 1.5 should be 02:30 hours, 01:30 Hours

Expected output

time (varchar)

02:00
01:30
03:00
05:00
02:00
02:30

...

how to do this in sql

Need sql query help

Answer 1

Actually, this may be much easier (you can CAST to time or datetime)

CAST(DATEADD(SECOND, n * 60, 0.0) as time)

But if you want a varchar implementation

LTRIM(CAST(n as int)) 
+ RIGHT('0' + LTRIM(CAST((n % 1) * 60) as int), 2)

Where n is your number.

LTRIM is used as a simple way to convert the numbers into varchar. We CAST n to an int to grab the hour portion, then we get the remainder from n to get the remaining fraction of an hour and convert to minutes with * 60. Then we CAST the minutes to int to truncate the decimal places, use RIGHT and pad a zero to the left to ensure that it is exactly two characters wide.