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是一个关键词,用于告诉数据库系统将创建一个数据表。 表名字必需在同一模式中...
CREATE TABLE table_name ( id SERIAL PRIMARY KEY, column1 datatype, column2 datatype, ... ); 复制代码使用索引:为表中经常用于查询的列创建索引可以提高查询性能。可以使用 CREATE INDEX 语句来创建索引。CREATE INDEX index_name ON table_name (column_name); 复制代码使用约束:使用约束可以确保数据的完整...
test=#createtabletbl_inherits_partition (liketbl_inherits_parent including constraints including indexes including defaults);CREATETABLEtest=# \d tbl_inherits_parentTable"public.tbl_inherits_parent"Column|Type|Modifiers---+---+---a|integer|notnullb|charactervarying(32)|notnulldefault'got u'::charac...
To create a new table, you use the CREATE TABLE statement. Here’s the basic syntax of the CREATE TABLE statement: CREATE TABLE [IF NOT EXISTS] table_name ( column1 datatype(length) column_constraint, column2 datatype(length) column_constraint, ... table_constraints ); In this syntax: ...
This will open a new window to create a New Table. Supply a name of your new table and then click on Columns. Now in the columns window, you can add columns you want and their data types by clicking "Add" and clicking on "Ok" after you finish supplying a name and data type for ...
postgres=# \help create table Command: CREATE TABLE Description: define a new table Syntax: CREATE [ [ GLOBAL | LOCAL ] { TEMPORARY | TEMP } | UNLOGGED ] TABLE [ IF NOT EXISTS ] table_name ( [ { column_name data_type [ STORAGE { PLAIN | EXTERNAL | EXTENDED | MAIN | DEFAULT } ...
format('INSERT INTO %I VALUES ($1.*)','tab_'||to_char(NEW.ts,'YYYYMMDD')) USING NEW; /* skip insert into the partitioned table */ RETURN NULL; END; $$; CREATE TRIGGER part_trig BEFORE INSERT ON TAB FOR EACH ROW ...
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: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATETABLEtable_name(column1 datatype,column2 datatype,column3 datatype,...columnN datatype,PRIMARYKEY(一个或多个列)); CREATE...
CREATEUSERtestWITHPASSWORD'abcd@1234'; 修改用户密码: ALTERUSERpostgresWITHPASSWORD'new_password'; 删除用户: DROPUSERusername; 用户授权: GRANTSELECTONsales_dbTOsales_user;--赋予用户sales_db这个数据库的读取权限 给单个表赋所有权限 GRANTALLPRIVILEGESONTABLEtablenameTOusername; ...
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.ID is null) begin select seq_test.nextval into :new.ID from dual; ...