set primary key postgresql
2020年2月26日 — The PostgreSQL PRIMARY KEY is a column in a table which must contain a ... CREATE TABLE orders( ord_no integer NOT NULL UNIQUE, ... ,CREATE TABLE products (. product_no integer PRIMARY KEY,. name text,. price numeric. ); 主鍵也可以包含多個欄位，語法和宣告唯一限制條件類似：.
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 set primary key postgresql 相關參考資料
How to change PRIMARY KEY of an existing PostgreSQL table?
ALTER TABLE <table_name> RENAME COLUMN <primary_key_candidate> TO id;. -- Lastly set your new PRIMARY KEY ALTER TABLE <table_name> ADD ... https://gist.github.com PostgreSQL PRIMARY KEY constraint - w3resource
2020年2月26日 — The PostgreSQL PRIMARY KEY is a column in a table which must contain a ... CREATE TABLE orders( ord_no integer NOT NULL UNIQUE, ... https://www.w3resource.com 5.4. 限制條件- PostgreSQL 正體中文使用手冊
CREATE TABLE products (. product_no integer PRIMARY KEY,. name text,. price numeric. ); 主鍵也可以包含多個欄位，語法和宣告唯一限制條件類似：. https://docs.postgresql.tw PostgreSQL: Primary Keys - TechOnTheNet
In PostgreSQL, a primary key is created using either a CREATE TABLE statement or an ALTER TABLE statement. You use the ALTER TABLE statement in PostgreSQL to add or drop a primary key. https://www.techonthenet.com PostgreSQL ALTER TABLE命令- PostgreSQL教學 - 極客書
ALTER TABLE ADD PRIMARY KEY約束的表的基本語法如下： ALTER TABLE table_name ADD CONSTRAINT MyPrimaryKey PRIMARY KEY (column1, ... http://tw.gitbook.net PostgreSQL約束條件- PostgreSQL教學 - 極客書
CREATE TABLE COMPANY6( ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL );. 例如， ... http://tw.gitbook.net PostgreSQL Primary Key - PostgreSQL Tutorial
CREATE TABLE TABLE ( column_1 data_type PRIMARY KEY, column_2 data_type, … ); The following statement creates a purchase order (PO) header table with ... https://www.postgresqltutorial Documentation: 9.1: ALTER TABLE - PostgreSQL
If PRIMARY KEY is specified, and the index's columns are not already marked NOT NULL, then this command will attempt to do ALTER COLUMN SET NOT ... https://www.postgresql.org Documentation: 8.1: Constraints - PostgreSQL
CREATE TABLE products ( product_no integer PRIMARY KEY, name text, price numeric );. Primary keys can also constrain more than one column; the syntax is ... https://www.postgresql.org |