The CREATE TABLE statement defines a table. The definition must include its name and the names and attributes of its columns. The definition can include other attributes of the table, such as its primary key and
SQL Server 导入和导出向导会基于所连接的数据源生成默认 CREATE TABLE 语句。 即使源表具有 FILESTREAM 列,此默认 CREATE TABLE 语句也不会包含 FILESTREAM 属性。 若要使用向导复制 FILESTREAM 列,请首先在目标数据库上实现 FILESTREAM 存储。 然后在“Create Table SQL 语句”对话...
SQL CREATE TABLE Example The following example creates a table called "Persons" that contains five columns: PersonID, LastName, FirstName, Address, and City: ExampleGet your own SQL Server CREATETABLEPersons ( PersonID int, LastName varchar(255), ...
Temporary tables Show 12 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric Creates a new table in the database. Note For reference to Warehouse in Microsoft Fabric, visit CREATE TABLE (Fabric Data Warehouse). For reference to Azure Syn...
Show 12 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric Creates a new table in the database. Note For reference to Warehouse in Microsoft Fabric, visit CREATE TABLE (Fabric Data Warehouse). For reference to Azure Synapse Analytics and...
com.alibaba.druid.sql.ast.SQLStatementImpl com.alibaba.druid.sql.ast.statement.SQLShowCreateTableStatement All Implemented Interfaces: SQLDbTypedObject, SQLObject, SQLReplaceable, SQLStatement, SQLShowStatement public class SQLShowCreateTableStatement extends SQLStatementImpl implements SQLShowStatement, SQL...
sql语句sql server sql语句大全实例教程 一、库操作 1、创建数据库 -- 创建一个名为“my_test”的数据库 -- 语法 CREATE DATABASE dbname; -- 实例 CREATE DATABASE my_test; -- 创建数据库时判断是否存在,不存在则创建 -- 语法 CREATE DATABASE IF NOT EXISTS dbname;...
SHOW CREATE DATABASE school; # 查看数据表的定义 SHOW CREATE TABLE student; # 显示表结构 DESC student; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 2) 修改表 添加列 ALTER TABLE db_name.tableName ...
SQL Server通常需要获取多个级别的锁才能完全保护资源, 这组多粒度级别上的锁就称为锁层次结构。 比如,当一个事务要更新一个表中的一行时,SQL Server会先获取表上的意向排他锁(IX),然后再获取行级别上的排他锁(X),还要获取索引上行的排他锁等,最后才能更新数据。
In SQL Server, theCREATE EXTERNAL TABLEstatement creates the path and folder if it doesn't already exist. You can then use INSERT INTO to export data from a local SQL Server table to the external data source. For more information, seePolyBase Queries. ...