Creating database tables in SQL is one of the most common tasks a developer or DBA does in a database. Learn how to create tables, what the syntax is, and see some examples in this article. This guide applies to Oracle, SQL Server, MySQL, and PostgreSQL. Table of Contents What Is Th...
create table语句是在数据库中创建表。在MySQL实例中可以 通过? create table方式来查看其语法: Syntax:CREATE[TEMPORARY]TABLE[IFNOTEXISTS] tbl_name (create_definition,...) [table_options] [partition_options]CREATE[TEMPORARY]TABLE[IFNOTEXISTS] tbl_name [(create_definition,...)] [table_options] [par...
-- create a table named Companies with different columnsCREATETABLECompanies (idint,namevarchar(50), addresstext, emailvarchar(50), phonevarchar(10) ); Here, the SQL command creates a database namedCompanieswith the columns:id,name,address,emailandphone. SQL CREATE TABLE Syntax CREATETABLEtable_...
The Syntax for the CREATE TABLE Statement is:CREATE TABLE table_name (column_name1 datatype, column_name2 datatype, ... column_nameN datatype ); table_name - is the name of the table. column_name1, column_name2... - is the name of the columns datatype - is the datatype ...
Simple CREATE TABLE syntax (common if not using options): syntaxsql Copy CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> } [ ,... n ] ) [ ; ] Full syntax Disk-based CREATE TABLE syntax: syntaxsql Copy CREATE...
記憶體優化 CREATE TABLE 語法: syntaxsql 複製 CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } ( { <column_definition> | [ <table_constraint> ] [ ,... n ] | [ <table_index> ] [ ,... n ] } [ PERIOD ...
Following is the table creation syntax by specifying the columns and their data types explicitly:CREATE TABLE table-name column-definition table-constraint-clause physical-storage-clause column-definition: column-name data type [WITH DEFAULT expression] [NULL|NOT NULL] [column-constraint-clause] [, ...
1>.查看CREATE TABLE的帮助信息 mysql>?CREATETABLEName:'CREATE TABLE'Description: Syntax:CREATE[TEMPORARY]TABLE[IF NOT EXISTS]tbl_name (create_definition,...)[table_options][partition_options]CREATE[TEMPORARY]TABLE[IF NOT EXISTS]tbl_name[(create_definition,...)][table_options][partition_options][...
Here is the syntax to be used with SQL CREATE TABLE Statement: sql CREATETABLE[IFNOTEXISTS] [Database_name].[Schema_name].table_name ( Column_name datatype [UNIQUE[KEY]|[[PRIMARY] KEY]|CONSTRAINT(NOTNULL|NULL, VISIBLE|INVISIBLE|DEFAULT|CHECK], Column_name datatype [UNIQUE[KEY]|[[PRIMARY...
Syntax SQLSyntax ❮ PreviousNext ❯ SQL Statements Most of the actions you need to perform on a database are done with SQL statements. SQL statements consist of keywords that are easy to understand. The following SQL statement returns all records from a table named "Customers":...