Answers for "postgres add column using"

postgresql add column with constraint

ALTER TABLE customers 
ADD COLUMN contact_name VARCHAR NOT NULL;

Posted by: Guest on February-18-2020

postgres add column from another table

UPDATE student
SET name = institute.inst_name
FROM institute
WHERE student.student_id = institute.inst_id;

Posted by: Guest on August-19-2021

PostgreSQL add column

ALTER TABLE mytable
ADD COLUMN column1 VARCHAR,
ADD COLUMN column2 REAL;

INSERT INTO mytable (column1)
VALUES (v1), (v2), (vn);

Posted by: Guest on September-25-2021

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