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 三、创建触发器 create or replace trigger autoId before insert on testTable for each Row when (NEW...
columnN datatype,PRIMARYKEY(oneormore columns ) ); 写法1: test=#createtablecompany(idintprimarykeynotnull, name textnotnull, ageintnotnull,addresschar(50) , salaryreal); 写法2: test=#CREATETABLECOMPANY( test(# IDINTPRIMARYKEYNOTNULL, test(# NAME TEXTNOTNULL, test(# AGEINTNOTNULL, test...
PRIMARY KEY( one or more columns ) ); 1. 2. 3. 4. 5. 6. 7. 8. 写法1: test=# create table company(id int primary key not null , name text not null , age int not null ,address char(50) , salary real); 写法2: test=# CREATE TABLE COMPANY( test(# ID INT PRIMARY KEY NOT...
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...
搞清楚这些问题后接下来看看PostgreSQL的相关支持能为我们实现什么,首先看一下CREATE TABLE AS,官方是这样描述的: 如上图所示,CREATE TABLE AS主要做两件事情,分别是建表(CREATE DATA)和填充数据(FILL DATA),下面我们就通过CREATE TABLE AS复制一张表试试看。本篇blog的示例都会用t_key_event_file_student这张表...
In PostgreSQL, the “CREATE” command can be executed with the “VIEW” keyword tocreate a view, as demonstrated in the following syntax: CREATE VIEW name_of_view AS select_query; Here, -“CREATE VIEW” is a command that creates a new virtual table. ...
postgreSQL 实现show create table 在mysql 中show create table 可以直接查询表的create sql 语句,在postgreSQL 没有这个命令,所以通过function 来实现,代码如下: 前提 定义一个公用的函数:findattname CREATE OR REPLACE FUNCTION findattname(namespace character varying, tablename character varying, ctype character...
CREATE EXTERNAL DATA SOURCE POSTGRES1 WITH ( LOCATION = 'odbc://POSTGRES1.domain:5432', CONNECTION_OPTIONS = 'Driver={PostgreSQL Unicode(x64)};', CREDENTIAL = postgres_credential ); Azure 儲存體 建立共用存取簽章 對於Azure Blob 儲存體和 Azure Data Lake Gen2,支援的驗證方法是共用存取簽章 (SA...
Sqlines 是一款开源软件,支持多种数据库之间的 SQL 语句语法的的转换,openGauss 将此工具修改适配,新增了 openGauss 数据库选项,目前可以支持 PostgreSQL、MySQL、Oracle 向 openGauss 的 SQL 语法转换。 如何获取和使用 1、在社区下载代码到任意位置:openGauss/openGauss-tools-sqlines (gitee.com) ...
PostgreSQL extension to create, manage and use Oracle-style Global Temporary Tables and the others RDBMS - darold/pgtt