Convert decimal time to hours and minutes

Question

Been struggling with this and can\'t seem to find the right answer, although there are plenty of mentions for converting, but nothing specific is working.

I need to

Answer 1

You can try:

DECLARE @HOURS decimal(7,4) = 20.5599
SELECT  CAST(CONVERT(VARCHAR,DATEADD(SECOND, @HOURS * 3600, 0),108) AS TIME)

output : 20:33:35

But remember : Type Time in MSSQL only under 24hrs

If you want greater than 24hrs, try:

DECLARE @HOURS decimal(7,4) = 25.5599
SELECT 
RIGHT('0' + CAST (FLOOR(@HOURS) AS VARCHAR), 2) + ':' + 
RIGHT('0' + CAST(FLOOR((((@HOURS * 3600) % 3600) / 60)) AS VARCHAR), 2) + ':' + 
RIGHT('0' + CAST (FLOOR((@HOURS * 3600) % 60) AS VARCHAR), 2)

output : 25:33:35

-- Update

Decimal minutes to more than 24hrs

DECLARE @MINUTES decimal(7,4) = 77.9
SELECT
RIGHT('0' + CAST (FLOOR(COALESCE (@MINUTES, 0) / 60) AS VARCHAR (8)), 2) + ':' + 
RIGHT('0' + CAST (FLOOR(COALESCE (@MINUTES, 0) % 60) AS VARCHAR (2)), 2) + ':' + 
RIGHT('0' + CAST (FLOOR((@MINUTES* 60) % 60) AS VARCHAR (2)), 2);

output: 01:17:54