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In this image, the author is pointing out that if a constraint is nullable, the database may return a null value when querying the field. This can be useful information if you're trying to determine whether a field is mandatory or not.

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Question: How can I know constraints nullable= true in the database

Asked by kroger

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.? You can use the sp_help stored procedure to find out which columns are nullable in a particular database table. For example, to find out which columns are nullable in the ‘Customers’ table, you would run the following command: EXEC sp_help 'Customers' This will return a result set that includes a column called ‘nullable’. This column will have a value of ‘1’ if the column is nullable, and ‘0’ if it is not.

Answered by text-davinci-003

Jan. 5, 2023, 6:37 a.m.

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Published: Thursday, January 5, 2023

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