If you change the value of a column to NULL,you must enclose the NULL value in single quotation marks.

Name: If you change the value of a column to NULL,you must enclose the NULL value in single quotation marks.
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The correct syntax to set a value to NULL in SQL does not require enclosing the NULL value in single quotation marks. Simply using the keyword NULL without quotes is enough.

If You Change the Value of a Column to NULL,you