postgres alter table add primary key
-- To set a column as primary key:
ALTER TABLE distributors ADD PRIMARY KEY (tablename);postgres alter table add primary key
-- To set a column as primary key:
ALTER TABLE distributors ADD PRIMARY KEY (tablename);postgresql primary key
CREATE TABLE users (
id SERIAL PRIMARY KEY, # Primary key
username VARCHAR(50),
col_name3 data_type,
…
);
CREATE TABLE posts (
id SERIAL PRIMARY KEY, # Primary key
url VARCHAR(200),
user_id INTEGER REFERENCES users(id), # foreign key
col_name3 data_type,
col_name4 data_type key_type,
…
);create table postgresql primary key
CREATE TABLE TABLE (
column_1 data_type PRIMARY KEY,
column_2 data_type,
…
);Copyright © 2021 Codeinu
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