set primary key postgresql
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：. ,CREATE TABLE products ( product_no integer PRIMARY KEY, name text, price numeric );. Primary keys can also constrain more than one column; the syntax is ... ,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 ... ,ALTER TABLE <table_name> RENAME COLUMN <primary_key_candidate> TO id;. -- Lastly set your new PRIMARY KEY ALTER TABLE <table_name> ADD ... ,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, ... ,CREATE TABLE TABLE ( column_1 data_type PRIMARY KEY, column_2 data_type, … ); The following statement creates a purchase order (PO) header table with ... ,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, ... ,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. ,CREATE TABLE COMPANY6( ID INT PRIMARY KEY NOT NULL, NAME TEXT NOT NULL, AGE INT NOT NULL, ADDRESS CHAR(50), SALARY REAL );. 例如， ...
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 set primary key postgresql 相關參考資料
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 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 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 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 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 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 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 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 |