Not Null in CockroachDB

Introduction In this document, we will explain the use of Not Null in CockroachDB from the following perspectives: What? What does the NOT NULL operator do for us? Why? In what situations do we want to use this operator in our Cockroach database work? How? How do we use the NULL operator, combined with NOT, … Continued

Add Postgres Not Null in SQL to Existing Column

Introduction In this article, we will explain the use of the Postgres NOT NULL SQL operator from three perspectives, including: What? What does NOT NULL do? Why? In what circumstances do we want to use an operator like this? How? How do we use the NULL (combined with NOT) operator in our SQL? Prerequisites Basic … Continued

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