How to Replace null values with specific value and how to increment the numbers

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SQL-Server-2008R2

Hi,

I have a table like as i mentioned below.

VB

COL A
10
NULL
20
NULL
40
20
NULL

i wanted to output like as i mentioned below can you please help me on this.

VB

Posted 14-Mar-15 1:25am

Raghu425

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2 solutions

Solution 2

Another way is to use COALESCE function[^]

SQL

SELECT COALESCE(ColA, 0) + 10 AS ColB
FROM TableName

In case you want to update your table (replace existing values), use this:

SQL

UPDATE t1 SET t1.ColA = COALESCE(t2.ColA, 0) + 10
FROM TableName AS t1 INNER JOIN TableName AS t2 ON t1.PK = t2.PK

where PK means: Primary Key

Posted 14-Mar-15 3:34am

Maciej Los

Updated 14-Mar-15 3:40am

v2

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Suvendu Shekhar Giri · Accepted Answer · 2015-03-14T01:32:00

ISNULL() can help you in this regard.
Try this

SQL

SELECT A,ISNULL(A,0)+10 AS B
FROM YourTableName

Example:

SQL

SELECT A,ISNULL(A,0)+10 AS B
FROM 
(
	SELECT 10 AS A
	UNION ALL
	SELECT NULL
	UNION ALL
	SELECT 20
	UNION ALL
	SELECT NULL
	UNION ALL
	SELECT 40
	UNION ALL
	SELECT 20
	UNION ALL
	SELECT NULL
) AS T

Output:

A	    B
------------------
10	     20
NULL	 10
20	     30
NULL	 10
40	     50
20	     30
NULL	 10

Hope, it helps :)