insert if not exists mysql
INSERT INTO table_listnames (name, address, tele) SELECT * FROM (SELECT 'Unknown' AS name, 'Unknown' AS address, '022' AS tele) AS tmp WHERE NOT EXISTS ( SELECT name FROM table_listnames WHERE name = 'Rupert' ) LIMIT 1;
insert if not exists mysql
INSERT INTO table_listnames (name, address, tele) SELECT * FROM (SELECT 'Unknown' AS name, 'Unknown' AS address, '022' AS tele) AS tmp WHERE NOT EXISTS ( SELECT name FROM table_listnames WHERE name = 'Rupert' ) LIMIT 1;
mysql insert into if not exists
INSERT INTO table_name (firstname, lastname) SELECT 'NEW FIRSTNAME', 'NEW LASTNAME' FROM DUAL WHERE NOT EXISTS( SELECT 1 FROM table_name WHERE firstname = 'NEW FIRSTNAME' AND lastname = 'NEW LASTNAME' ) LIMIT 1;
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