/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

1 vote223 views1 answer
Sql server read uncommitted
SQL
3 votes233 views2 answers
Postgres inner join vs join
SQL
0 vote229 views1 answer
EneratingSchemaError: Some errors occurred while generating GraphQL schema: Type Query must define one or more fields.
SQL
3 votes237 views1 answer
Define REGEXP?
SQL
3 votes216 views2 answers
How to View column names of a table in SQL
SQL
0 vote241 views1 answer
Set column in all row mysql
SQL
0 vote228 views1 answer
Like sql for second letter of the family name
SQL
0 vote223 views1 answer
Not equal to blank in mysql
SQL
15 votes249 views3 answers
Mysql update add to existing value
SQL
0 vote251 views2 answers
Select a row include list of array with join two table SQL
SQL

Share