UNIQUE } [ CLUSTERED | NONCLUSTERED ] [ WITH FILLFACTOR = fillfactor | WITH ( <index_option> [ ,... n ] ) ] [ ON { partition_scheme_name ( partition_column_name ) | filegroup | "default" } ] | [ FOREIGN KEY ] REFERENCES referenced_table_name [ ( ref_column ) ] [ ON DELETE...
UNIQUE } [ CLUSTERED | NONCLUSTERED ] [ WITH FILLFACTOR = fillfactor | WITH ( <index_option> [ ,... n ] ) ] [ ON { partition_scheme_name ( partition_column_name ) | filegroup | "default" } ] | [ FOREIGN KEY ] REFERENCES referenced_table_name [ ( ref_column ) ] [ ON DELETE...
] < table_constraint > ::= [ CONSTRAINT constraint_name ] { { PRIMARY KEY | UNIQUE } [ CLUSTERED | NONCLUSTERED ] (column [ ASC | DESC ] [ ,...n ] ) [ WITH FILLFACTOR = fillfactor |WITH ( <index_option> [ , ...n ] ) ] [ ON { partition_scheme_name (partition_column_nam...
对文件“e:\school.mdf"的目录查找失败,出现操作系统错误(系统找不到指定的路径。)CREATE DATABASE失败。无法创建列出的某些文件名。 解决方法:检查本地计算机是否存在e盘。 使用create table创建数据表Student。 CREATE TABLE [〈库名〉]〈表名〉( 〈列名〉〈数据类型〉[〈列级完整性约束条件〉] [,列名]〈数据...
-- Create a new table.CREATETABLE{database_name.schema_name.table_name|schema_name.table_name|table_name} ( {column_name<data_type>[<column_options>] } [ ,...n ] ) [WITH(<table_option>[ ,...n ] ) ] [;]<column_options>::=[COLLATEWindows_collation_name] [NULL|NOTNULL]-- de...
SQL Server / Oracle / MS Access: CREATE TABLE Persons ( Id_P int NOT NULLUNIQUE, LastName varchar(255) NOT NULL, FirstName varchar(255), Address varchar(255), City varchar(255) ) 如果需要命名 UNIQUE 约束,以及为多个列定义 UNIQUE 约束,请使用下面的 SQL 语法: ...
USEAdventureWorks2022; GO-- Create a new table with three columns.CREATETABLEdbo.TestTable ( TestCol1INTNOTNULL, TestCol2NCHAR(10)NULL, TestCol3NVARCHAR(50)NULL); GO-- Create a clustered index called IX_TestTable_TestCol1-- on the dbo.TestTable table using the TestCol1 column.CREATECLUS...
單一Transact-SQL 陳述式在資料分割資料表的單一資料分割區上取得至少 5,000 個鎖定,且 ALTER TABLE SET LOCK_ESCALATION 選項設定為 AUTO。 SQL Server 資料庫引擎執行個體中的鎖定數目超過記憶體或組態閾值。 如果因為鎖定衝突而無法擴大鎖定,資料庫引擎會在每取得 1,250 個新鎖定時,定期觸發鎖...
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MS SQL SERVER 创建表结构、索引、添加字段等常用脚本 创建表: ifnotexists(select1fromsysobjectswhereid=object_id('PayChannelNm') )createtable[dbo].PayChannelNm([Id]bigintIDENTITY(1,1)NOTNULL, PayChannel[varchar](20)notnull, PayChannelNamenvarchar(50)notnull, ...