To combine two table if value is null or empty

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SQL-Server-2012

Hi experts
i have two address tables like Address1 and CommonAddress

Address1 have Line1,Line2,Country,State,Zip
CommonAddress have Line1,Line2,State

i want sql query for if State is null in Address1 table it will be replace with State in CommonAddresswhen getting with same name of line1

please help me

Thanks in advance..

Posted 12-Feb-15 19:59pm

NaniCh

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ZurdoDev · Answer 1 · 2015-02-13T02:21:00

Solution 1

COALESCE()[^] is what you want to use. It will return the first non-null value.

For example:

SQL

SELECT COALESCE(a.State, c.State) AS State, COALESCE(a.line1, c.line1) AS line1, etc...
FROM Address1 a
LEFT JOIN CommonAddress c ON ... whatever your join is

Posted 13-Feb-15 2:21am

ZurdoDev