How to remove not null constraint in sql server using query

Sql ServerSql

Sql Server Problem Overview

I am trying to remove not null constraint in sql server 2008 without losing data.

Sql Server Solutions

Solution 1 - Sql Server

 ALTER TABLE YourTable ALTER COLUMN YourColumn columnType NULL

Solution 2 - Sql Server

Remove constraint not null to null

ALTER TABLE 'test' CHANGE COLUMN 'testColumn' 'testColumn' datatype NULL;

Solution 3 - Sql Server

Remove column constraint: not null to null

ALTER TABLE test ALTER COLUMN column_01 DROP NOT NULL;

Solution 4 - Sql Server

Reference: https://www.tutorialspoint.com/How-can-we-remove-NOT-NULL-constraint-from-a-column-of-an-existing-MySQL-table

ALTER TABLE tableName MODIFY columnName columnType NULL;
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Content TypeOriginal AuthorOriginal Content on Stackoverflow
QuestionShantanu GuptaView Question on Stackoverflow
Solution 1 - Sql ServerMichael PakhantsovView Answer on Stackoverflow
Solution 2 - Sql ServerNan YuView Answer on Stackoverflow
Solution 3 - Sql ServerPasQualEView Answer on Stackoverflow
Solution 4 - Sql ServerRujoota ShahView Answer on Stackoverflow