Collation identifier C# 複製 public Microsoft.SqlServer.TransactSql.ScriptDom.Identifier Collation { get; set; } Property Value Identifier Applies to 產品版本 Microsoft.SQLServer.DacFx 140.3881.1, 150.18208.0, 160.2004021.0, 161.6374.0, 161 本文...
其语法可表示如下:CREATE DATABASE database_name [ ON [ < filespec > [1,...n ] ] [ , < filegroup > [1,...n ] ] ] [ LOG ON { < filespec > [1,...n ] } ] [ COLLATE collation_name ] [ FOR LOAD | FOR ATTACH ] 其中,< filespec >定义如下所示。
程序集: Microsoft.SqlServer.TransactSql.ScriptDom(在 Microsoft.SqlServer.TransactSql.ScriptDom.dll 中) 语法 C# 复制 public Identifier Collation { get; set; } 属性值 类型:Microsoft.SqlServer.TransactSql.ScriptDom.Identifier The collation identifier. 请参阅 参考 AlterTableAlterColumnStatement 类 Micro...
在ALTER COLUMN 语句中指定 NULL,可以强制 NOT NULL 列允许空值,但 PRIMARY KEY 约束中的列除外。只有列中不包含空值时,才可以在 ALTER COLUMN 中指定 NOT NULL。必须将空值更新为某个值后,才允许执行 ALTER COLUMN NOT NULL 语句,例如: 复制代码 UPDATE MyTable SET NullCol = N'some_value' WHERE NullCol...
syntaxsql Copy -- Syntax for Warehouse om Microsoft Fabric: ALTER TABLE { database_name.schema_name.table_name | schema_name.table_name | table_name } { ADD { column_name <data_type> [COLLATE collation_name] [ <column_options> ] } [ ,...n ] | ADD { <column_constraint> FOR co...
ALTER TABLE语句是SQL Server中用于修改已有表结构的命令。通过ALTER TABLE语句,我们可以对表进行增加、删除、修改列等操作。 2. ALTER TABLE语法格式 ALTER TABLE table_name { ADD { [ column_definition ] [ ,...n ] } | ALTER COLUMN column_name { new_data_type } [ COLLATE< collation_name > ] ...
AlterServerRoleStatement AlterServiceMasterKeyOption AlterServiceMasterKeyStatement AlterServiceStatement AlterSymmetricKeyStatement AlterTableAddTableElementStatement AlterTableAlterColumnOption AlterTableAlterColumnStatement AlterTableAlterIndexStatement AlterTableAlterPartitionStatement AlterTableChangeTrackingModificationStatem...
AlterServerRoleStatement AlterServiceMasterKeyOption AlterServiceMasterKeyStatement AlterServiceStatement AlterSymmetricKeyStatement AlterTableAddTableElementStatement AlterTableAlterColumnOption AlterTableAlterColumnStatement AlterTableAlterIndexStatement AlterTableAlterPartitionStatement AlterTableChangeTrackingModificationStatem...
Column or parameter names within an object Index names within a table Duplicate names resulting from the new collation cause the change action to fail, and SQL Server returns an error message specifying the namespace where the duplicate was found. ...
Column or parameter names within an object Index names within a table Duplicate names resulting from the new collation cause the change action to fail, and SQL Server returns an error message specifying the namespace where the duplicate was found. ...