PostgreSQL 使用 CREATE TABLE 语句来创建数据库表格。 语法 CREATE TABLE 语法格式如下: CREATE TABLE table_name( column1 datatype, column2 datatype, column3 datatype, ..... columnN datatype, PRIMARY KEY( 一个或多个列 ) ); CREATE TABLE
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尽量避免使用不必要的大型数据类型,例如使用 INT 替代 BIGINT、使用 VARCHAR(n) 替代 TEXT。CREATE TABLE table_name ( id SERIAL PRIMARY KEY, column1 INTEGER, column2 VARCHAR(50), ... ); 复制代码通过使用上述技巧,可以提高在 PostgreSQL 中创建表的效率和性能。在创建表时,根据具体的需求和数据特性,选择...
v_constraint_comment_record record;BEGIN-- grab the oid of the table; https://www.postgresql.org/docs/8.3/catalog-pg-class.htmlSELECTc.oid, c.relkindINTOv_table_oid, v_table_typeFROMpg_catalog.pg_class cLEFTJOINpg_catalog.pg_namespace nONn.oid=c.relnamespaceWHEREc.relkindin('r','p...
Create Table using command line in Linux Start terminal and execute the following command: sudo -u postgres psql postgres This command will bring you to the PostgreSQL command prompt. Now, to create a table issue the following command.
postgresql create table 自增主键 plsql建表主键自增 一、创建表 create table testTable ( Id numbere, name varchar2(100), age number, createTime date, primary key(Id) ) 1. 2. 3. 4. 5. 6. 7. 8. 二、创建序列 create sequence seq_test...
简介:PostgreSQL 动态表复制(CREATE TABLE AS & CREATE TABLE LIKE) 前言 项目中有表复制的需求,而且是动态复制,即在存储过程里根据参数数组的值循环复制n张结构(约束、索引等)等一致的一组表,PostgreSQL提供了两种语法来进行表复制,分别是: CREATE TABLE AS ...
In Postgres, the CREATE TABLE command assists us increating a new table. Here is the very simple yet effective syntax to create a table in PostgreSQL: CREATETABLE tab_name(first_coldata_type,second_coldata_type,third_coldata_type,...nth_coldata_type,); Here...
Themetadatacolumn stores JSON data, which can be queried and manipulated using PostgreSQL's JSON functions. CREATE TABLE with ENUM This example demonstrates how to create a table with anENUMcolumn: create_table_with_enum.sql CREATE TYPE genre_type AS ENUM ('Fiction', 'Non-Fiction', 'Sci-Fi...
This tutorial works for PostgreSQL anywhere. If you need cloud Postgres, get the generous free plan on Neon. Summary: in this tutorial, you will learn how to use the PostgreSQL CREATE TABLE statement to create a new table. Introduction to PostgreSQL CREATE TABLE statement Typically, a relational...