UPSERT (which stands for UPDATE or INSERT) updates or inserts multiple rows to a table based on a comparison by the primary key. Missing rows are added. For the existing rows, the values of the specified columns are updated, but the values of the other columns are preserved.
REPLACE are data modification operations that don't require a prefetch and run faster and cheaper than other operations because of that.
Column mapping when using
UPSERT INTO ... SELECT is done by names. Use
AS to fetch a column with the desired name in
UPSERT INTO my_table SELECT pk_column, data_column1, col24 as data_column3 FROM other_table
UPSERT INTO my_table ( pk_column1, pk_column2, data_column2, data_column5 ) VALUES ( 1, 10, 'Some text', Date('2021-10-07')), ( 2, 10, 'Some text', Date('2021-10-08'))