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The CAST operator in PostgreSQL

Introduction Cast is a technique in PostgreSQL with which we can convert a value of one datatype into another. We can perform various cast operations in PostgreSQL for converting one datatype to another, such as the String datatype to the Integer datatype (or the Boolean datatype or datetime datatype) and vice versa. This article will […]

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Question of the Day

Using table variables in T-SQL

What happens if you run the following code in SQL Server 2022+?

declare @t1 table (id int);

insert into @t1 (id) values (NULL), (1), (2), (3);

select count(*)
from @t1
where @t1.id is distinct from NULL;
 

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