How to convert nvarchar, money and smallmoney values to int

Simply, we can use the given conversion syntax to convert Nvarchar, smallmoney and money datatype values to int values.

select (CAST(CAST(ColumnName AS float) AS INT))

or

select (CASE WHEN ISNUMERIC(ColumnName)=1 THEN CAST(CAST(ColumnName AS float) AS INT)END )

Illustration

Create a table and insert values as:

create table payment(id varchar(5),amount nvarchar(15))
insert into payment values('E001',5000.00)

after that out of "select * from payment" will be
id amount
--- --------
E001 5000.00

Using Syntax, write code as:

select (CAST(CAST(amount AS float) AS INT)) from Payment

Output for amount columns will be:
amount
-------
5000