Question

I have small table

Create Table TestDates
(
  TestDateId int identity (1,1),
  RunDateTime DateTime
)

I manage to execute distinct query that brings only time but
if hour or minute is less then 10 I want to add zero

SELECT DISTINCT SUBSTRING(CONVERT(varchar, RunDateTime, 100), 13, 2) + ':'
+ SUBSTRING(CONVERT(varchar, RunDateTime, 100), 16, 2) + ' '
+ SUBSTRING(CONVERT(varchar, RunDateTime, 100), 18, 2) AS DistinctDate
from TestDates

See example

**Current Output     Desired Output**

8:1 PM               **08:01 PM** 
8:33 AM              **08:33 AM**

I tried to use right function but it does not help

SELECT DISTINCT Right('00' + SUBSTRING(CONVERT(varchar, RunDateTime, 100), 13, 2),2) + ':'
+ Right('00' + SUBSTRING(CONVERT(varchar, RunDateTime, 100), 16, 2),2) + ' '
+ SUBSTRING(CONVERT(varchar, RunDateTime, 100), 18, 2) AS DistinctDate
from TestDates

Please advice

Answer 1

Try this:

SELECT DISTINCT 
     Right('00'+LTRIM(SUBSTRING(CONVERT(varchar, RunDateTime, 100), 13, 2)),2) + 
     ':'
     + Right('00' + SUBSTRING(CONVERT(varchar, RunDateTime, 100), 16, 2),2) + ' '
     + SUBSTRING(CONVERT(varchar, RunDateTime, 100), 18, 2) AS DistinctDate
FROM TestDates

The problem is that the first substring returns _8 (space 8), so you need to trim the value to get rid of the space, then do you adding 00 code.