/SQL/ON DUPLICATE KEY UPDATE for postgres

ON DUPLICATE KEY UPDATE for postgres

INSERT INTO the_table (id, column_1, column_2) 
VALUES (1, 'A', 'X'), (2, 'B', 'Y'), (3, 'C', 'Z')
ON CONFLICT (id) DO UPDATE 
  SET column_1 = excluded.column_1, 
      column_2 = excluded.column_2;

Source: stackoverflow.com

To ignore duplicate keys during 'copy from' in postgresql

create temp table tmp_table on commit drop as select * from brand with no data;
copy tmp_table (name,slug) from '/var/lib/postgresql/data/Brands.csv' DELIMITER ',' csv header;
insert into brand select distinct on (slug) * from tmp_table;

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