The data type of the column. C# 複製 public Microsoft.SqlServer.TransactSql.ScriptDom.DataTypeReference DataType { get; set; } Property Value DataTypeReference Applies to 產品版本 Microsoft.SQLServer.DacFx 140.3881.1, 150.18208.0, 160.2004021.0, 161.6374.0, 161 本文...
ALTER命令的基本语法因数据库管理系统(DBMS)而异,但一般都遵循相似的结构。在SQL Server和MySQL中,基本语法如下: ALTER TABLE table_name ADD column_name datatype; ALTER TABLE table_name DROP COLUMN column_name; ALTER TABLE table_name MODIFY COLUMN column_name datatype; ALTER TABLE table_name RENAME T...
Transact-SQL (T-SQL) Reference Date & time hierarchyid methods (database engine) Numeric String & binary Spatial geography & instances (geography Data Type) Spatial geometry & instances (geometry Data Type) Data types XML DBCC Functions Language elements Queries Statements Statements General ALTER ...
Azure portal Преузми SQL Server Верзија Microsoft.SqlServer.TransactSql.ScriptDom Претражи Microsoft.SqlServer.TransactSql.ScriptDom Microsoft.SqlServer.TransactSql.ScriptDom AbortAfterWaitType AcceleratedDatabaseRecoveryDatabaseOption AddAlterFullTextIndexAction AddFileSpec...
Used in a CHECK or UNIQUE constraint. But, changing the length of a variable-length column used in a CHECK or UNIQUE constraint is allowed. Associated with a default definition. However, the length, precision, or scale of a column can be changed if the data type isn't changed. The data...
SqlServer.TransactSql.ScriptDom AbortAfterWaitType AcceleratedDatabaseRecoveryDatabaseOption AddAlterFullTextIndexAction AddFileSpec AddMemberAlterRoleAction AddSearchPropertyListAction AddSensitivityClassificationStatement AddSignatureStatement AdHocDataSource AdHocTableReference AffinityKind AlgorithmKeyOption...
Syntax for Warehouse in Fabric 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...
Syntax for Warehouse in Fabric 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...
SQL Server: EXECsp_rename'table_name.old_name','new_name','COLUMN'; ALTER TABLE - ALTER/MODIFY DATATYPE To change the data type of a column in a table, use the following syntax: SQL Server / MS Access: ALTERTABLEtable_name ALTERCOLUMNcolumn_name datatype; ...
INCLUDING DATASpecify INCLUDING DATA if you want Oracle to convert the data in the table to the latest type version format (if it was not converted when the type was altered). You can define the storage for any new column while upgrading the table by using the column_properties and the ...