Answers for "exists not exists sql plus"

SQL
9

if not exists insert sql

IF NOT EXISTS (SELECT * FROM EmailsRecebidos 
                   WHERE De = @_DE
                   AND Assunto = @_ASSUNTO
                   AND Data = @_DATA)
   BEGIN
       INSERT INTO EmailsRecebidos (De, Assunto, Data)
       VALUES (@_DE, @_ASSUNTO, @_DATA)
   END
Posted by: Guest on April-21-2020
0

sql not exists

-- The SQL NOT EXISTS Operator will act quite opposite to EXISTS Operator. 
-- It is used to restrict the number of rows returned by the SELECT Statement.

SELECT column_name
FROM table_name
WHERE NOT EXISTS (Write Subquery to Check);
Posted by: Guest on December-08-2021

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