/SQL/PostgreSQL add column

PostgreSQL add column

Postgresql add column with constraint

ALTER TABLE customers 
ADD COLUMN contact_name VARCHAR NOT NULL;

31

Source: postgresqltutorial.com

Postgresql insert column

ALTER TABLE table_name
ADD COLUMN new_column_name data_type constraint;

4

Alter table add multiple columns postgresql

        
            
        
     ALTER TABLE customer 
ADD COLUMN fax VARCHAR,
ADD COLUMN email VARCHAR;

3

Source: postgresqltutorial.com

Postgres how to add field created at

CREATE TABLE my_table
(
	id serial NOT NULL,
    user_name text,
	created_at timestamp with time zone DEFAULT CURRENT_TIMESTAMP //here
)

2

Similar codes

0 vote373 views1 answer
Inserting values with beekeeper get error null value in column createdAt violates not-null constraint
SQL
0 vote429 views1 answer
Mysql convert charset
SQL
1 vote360 views3 answers
Mysql connection string
SQL
0 vote344 views1 answer
Complete date is 1 year or not sql server
SQL
0 vote365 views1 answer
Mysql shell ERROR: Not connected.
SQL
0 vote341 views1 answer
Can we rollback deleted data in sql
SQL
2 votes363 views1 answer
How to create sql database
SQL
3 votes360 views3 answers
List columns in table postgres
SQL
50 votes432 views6 answers
Sql duplicate rows
SQL
0 vote391 views1 answer
SQL FROM-Klausel
SQL

Share