postgresql add column with constraint
ALTER TABLE customers
ADD COLUMN contact_name VARCHAR NOT NULL;postgresql add column with constraint
ALTER TABLE customers
ADD COLUMN contact_name VARCHAR NOT NULL;postgres add column at position
ALTER TABLE ADD COLUMN will only add the new column at the end, as the last one.
In order to create a new column in another position you need to recreate the
table and copy the data from the old/current table in this new table.Copyright © 2021 Codeinu
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