CREATE INDEX Syntax Creates an index on a table. Duplicate values are allowed: CREATEINDEXindex_name ONtable_name(column1,column2, ...); CREATE UNIQUE INDEX Syntax Creates a unique index on a table. Duplicate values are not allowed:
Syntax Create_Managed_Table_With_Schema_Statement := 'CREATE' 'TABLE' ['IF' 'NOT' 'EXISTS']IdentifierTable_With_Schema. Table_With_Schema:= '(' {Column_Definition',' } [Table_IndexPartition_Specification] { ','Column_Definition} ')' | '(' {Column_Definition',' } [Table_Index] { ...
syntaxsql 複製 CREATE TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } [ AS FileTable ] ( { <column_definition> | <computed_column_definition> | <column_set_definition> | [ <table_constraint> ] [ ,... n ] | [ <...
适用范围:SQL Server(SQL Server 2008 至当前版本)。 有关 Azure SQL Database 语法,请参阅 CREATE TABLE (Azure SQL Database)。Transact-SQL 语法约定语法复制 --Disk-Based CREATE TABLE Syntax CREATE TABLE [ database_name . [ schema_name ] . | schema_name . ] table_name [ AS FileTable ]...
lengthindex_typeindex_optionvalueindex_typeparser_name string algorithm_option lock_option 14.1.15 CREATE LOGFILE GROUP Syntax 14.1.16 CREATE PROCEDURE and CREATE FUNCTION Syntax 14.1.17 CREATE SERVER Syntax 14.1.18 CREATE TABLE Syntax 14.1.18.1 CREATE TABLE ... LIKE Syntax ...
SQL基础语法—create index语句 1 create index语句介绍 create index语句用来在表中创建索引。索引的作用提高数据库查询的效率,这个作用对用户来说是透明的,其作用只是对MySQL引擎来说的。 Syntax:CREATE[UNIQUE|FULLTEXT|SPATIAL] INDEX index_name [index_type]ONtbl_name (index_col_name,...)...
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":...
CREATE DATABASE - 创建新数据库 ALTER DATABASE - 修改数据库 CREATE TABLE - 创建新表 ALTER TABLE - 变更(改变)数据库表 DROP TABLE - 删除表 CREATE INDEX - 创建索引(搜索键) DROP INDEX - 删除索引 SQL 的 DML (数据操作语言)部分: SELECT - 从数据库表中获取数据 ...
CREATE TABLE- 创建新表 ALTER TABLE- 变更(改变)数据库表 DROP TABLE- 删除表 CREATE INDEX- 创建索引(搜索键) DROP INDEX- 删除索引 (2)数据操纵(SQL DML)数据操纵分成数据查询和数据更新两类。数据更新又分成插入、删除、和修改三种操作。 (3)数据控制(DCL)包括对基本表和视图的授权,完整性规则的描述,事务...
In this article we cover an introduction to the CREATE TABLE syntax for creating a new SQL Server table.