Add value from two columns as the computed column : Computed Column « Table « SQL Server / T-SQL

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SQL Server / T-SQL » Table » Computed Column 
Add value from two columns as the computed column


1>
2CREATE TABLE T (
3>     int1 int,
4>     bit1 bit,
5>     varchar1 varchar(3),
6>     dec1 dec(5,2),
7>     cmp1 AS (int1 + bit1)
8)
9> GO
1INSERT (int1, bit1VALUES (10)
2> GO

(rows affected)
1INSERT (int1, varchar1VALUES (2'abc')
2> GO

(rows affected)
1INSERT (int1, dec1VALUES (35.25)
2> GO

(rows affected)
1INSERT (bit1, dec1VALUES (19.75)
2> GO

(rows affected)
1> --Average of dec1 values
2SELECT CAST(AVG(dec1AS dec(5,2)) 'Avg of dec1'
3FROM T
4WHERE dec1 IS NOT NULL
5> GO
Avg of dec1
-----------
       7.50

(rows affected)
1>
2>
3> drop table t
4> GO
1>
           
       
Related examples in the same category
1. Computed columns are (by default) virtual columns not physically stored in the table
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