divide by zero error encountered

Mar 15 2017 2:38 PM

i am using vs2015 and ms sql..

my database table definition on:

[REG_NO] VARCHAR (50) NOT NULL,

[NAME] VARCHAR (25) NULL,

[ROLL_NO] VARCHAR (10) NULL,

[DOB] VARCHAR (50) NULL,

[COURSE] VARCHAR (10) NULL,

[DEPARTMENT] VARCHAR (20) NULL,

[YEAR] NVARCHAR (10) NULL,

[SHIFT] VARCHAR (10) NULL,

[IMAGE] IMAGE NULL,

[PRESENTEDHOURS] FLOAT (53) NULL,

[TOTALHOURS] FLOAT (53) NULL,

PRIMARY KEY CLUSTERED ([REG_NO] ASC)

i will add a column on :

[PERCENTAGE] AS (([PRESENTED HOURS]/[TOTAL HOURS])*(100)),

now my table definition is