How to Use Boolean Type in Select Statement

How to use BOOLEAN type in SELECT statement

You can build a wrapper function like this:

function get_something(name in varchar2,
                   ignore_notfound in varchar2) return varchar2
is
begin
    return get_something (name, (upper(ignore_notfound) = 'TRUE') );
end;

then call:

select get_something('NAME', 'TRUE') from dual;

It's up to you what the valid values of ignore_notfound are in your version, I have assumed 'TRUE' means TRUE and anything else means FALSE.

Return Boolean Value on SQL Select Statement

What you have there will return no row at all if the user doesn't exist. Here's what you need:

SELECT CASE WHEN EXISTS (
    SELECT *
    FROM [User]
    WHERE UserID = 20070022
)
THEN CAST(1 AS BIT)
ELSE CAST(0 AS BIT) END

How to use LIKE operator basing on Boolean datatype in SQL queries?

May be by modifying your query with some sub-queries might actually work.

You could follow the below approach if that's fine for you. It worked for me.

SELECT COMPANYNAME FROM 
(
SELECT COMPANYNAME, 
CASE WHEN ISACTIVE=1 THEN 'TRUE' ELSE 'FALSE' 
END AS ACTIVECHECK
FROM
Users) B
WHERE B.ACTIVECHECK LIKE:param

How to set bool value in SQL

Sql server does not expose a boolean data type which can be used in queries.

Instead, it has a bit data type where the possible values are 0 or 1.

So to answer your question, you should use 1 to indicate a true value, 0 to indicate a false value, or null to indicate an unknown value.

Update [mydb].[dbo].[myTable]
SET isTrue =
CASE WHEN Name = 'Jason' THEN 
    1
ELSE 
    0
END

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