Here, the SQL command adds a column namedphoneto theCustomerstable. ALTER TABLE Syntax The syntax of the SQLALTER TABLEstatement is: ALTERTABLEtable_name clause supporting_codes; Here, table_nameis the name of the table to be modified clausegives further information on how the table is to be...
Learn more about the Microsoft.SqlServer.TransactSql.ScriptDom.AlterTableAlterColumnStatement.AlterTableAlterColumnStatement in the Microsoft.SqlServer.TransactSql.ScriptDom namespace.
[ ; ] Multistatement Table-valued Functions ALTER FUNCTION [ schema_name. ] function_name ( [ { @parameter_name [ AS ] [ type_schema_name. ] parameter_data_type [ =default ] } [ ,...n ] ] ) RETURNS @return_variable TABLE [ WITH <function_option> [ ,...n ] ] [ AS ] BE...
A SQL Server system data type. An alias data type based on a SQL Server system data type. Alias data types are created with the CREATE TYPE statement before they can be used in a table definition. A .NET Framework user-defined type, and the schema to which it belongs. .NET Framework ...
SQL> Alter table instructor MODIFY (name char (20)); Table Altered DROPPING COLUMNS/CONSTRAINTS You can not only modify columns that exist in your tables but you can also drop them entirely. You can also remove the constraints from the table using the ALTER TABLE statement. When a constrain...
In addition, the length of the constant value cannot be greater than the INLINE LENGTH attribute for LOB columns. SESSION_USER or USER Specifies the value of the SESSION_USER (USER) special register at the time of an SQL data change statement or LOAD, as the default for the column. If ...
2010-08-25 14:37 −Oracle 的「批次 (batch) 更新」、「批次新增」、「批次删除」语法 Oracle 仍可如 SQL Server、Sybase 数据库,用「分号 (;)」隔离多个 SQL statement,只是 Oracle 前后要再加上 begin、end 关键词,例如: string strSql ... ...
2.1.2.240 T521, Named arguments in CALL statement 2.1.2.241 T522, Default values for IN parameters of SQL-invoked procedures 2.1.2.242 T551, Optional key words for default syntax 2.1.2.243 T561, Holdable locators 2.1.2.244 T571, Array-returning external SQL-invoked functions 2.1.2.245 T5...
The operation holds low priority locks, allowing other operations that hold locks conflicting with the DDL statement to proceed. Omitting the WAIT AT LOW PRIORITY option is equivalent to WAIT_AT_LOW_PRIORITY ( MAX_DURATION = 0 minutes, ABORT_AFTER_WAIT = NONE). MAX_DURATION = time [ MINUTES...
A SQL Server 2005 system data type. An alias data type based on a SQL Server system data type. Alias data types are created with the CREATE TYPE statement before they can be used in a table definition. A .NET Framework user-defined type, and the schema to which it belongs. .NET Frame...