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;
alter table add column psql
ALTER TABLE table_name
ADD column_name data_type column_constraint;
postgres add column from another table
UPDATE student
SET name = institute.inst_name
FROM institute
WHERE student.student_id = institute.inst_id;
alter table add multiple columns postgresql
ALTER TABLE customer
ADD COLUMN fax VARCHAR,
ADD COLUMN email VARCHAR;
PostgreSQL add column
ALTER TABLE mytable
ADD COLUMN column1 VARCHAR,
ADD COLUMN column2 REAL;
INSERT INTO mytable (column1)
VALUES (v1), (v2), (vn);
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