MySQL DISTINCT
When querying data from a table, you may get duplicate rows. In order to remove these duplicate rows, you use the DISTINCT clause in the SELECT statement.
Here is the syntax of the DISTINCT clause:
SELECT DISTINCT
select_list
FROM
table_name;sql server select rows by distinct column
SELECT a.*
FROM emails a
INNER JOIN
(SELECT email,
MIN(id) as id
FROM emails
GROUP BY email
) AS b
ON a.email = b.email
AND a.id = b.id;select only distinct values another table
INSERT INTO Table2(Id) SELECT DISTINCT Id FROM Table1 WHERE Id NOT IN(SELECT Id FROM Table2);Copyright © 2021 Codeinu
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