MS SQL Server Oracle Operators: CREATE VIEW SELECT FROM WHERE AS Table of Contents Problem Example Solution Discussion Problem You want to create a view from a table in a database. Example We would like to create a view calledit_employeewith employees who work in the IT department, based on...
regardless of the source of the underlying data. For example, if permissions are granted on theSalesOrderIDcolumn in a CREATE VIEW statement, an ALTER VIEW statement can name theSalesOrderIDcolumn with a different column name, such asOrderRef, and still have the ...
SQL Server 和 Azure SQL 数据库 的语法。 syntaxsql复制 CREATE[ORALTER]VIEW[schema_name. ]view_name[ (column [ ,...n ] ) ] [WITH<view_attribute>[ ,...n ] ]ASselect_statement[WITHCHECKOPTION] [ ; ]<view_attribute>::={ [ENCRYPTION] [SCHEMABINDING] [VIEW_METADATA] } ...
SQL 使用 CREATE VIEW 语句用来创建视图,基本的语法格式如下: CREATEVIEWview_nameASSELECTcolumn1,column2...FROMtable_nameWHERE[condition]; view_name 是视图的名字,以后可以通过 view_name 来使用此视图。您看,所谓的视图,就是给某个普通的 SELECT 查询起了一个名字,方便以后使用而已。 示例 有包含如下记录的...
在SQL 中,您可以基于一个表、多个表或者另外一个视图来创建新的视图,被视图引用的表通常称为“基础表”。 注意,用户必须拥有足够的权限才能创建视图。 SQL 使用 create view 语句用来创建视图,基本的语法格式如下: create view view_name as select column1, column2...fromtable_name where...
SQL CREATE VIEW 语句在SQL 中,视图是基于 SQL 语句的结果集的可视化的表。视图包含行和列,就像一个真实的表。视图中的字段就是来自一个或多个数据库中的真实的表中的字段。您可以向视图添加 SQL 函数、WHERE 以及 JOIN 语句,也可以呈现数据,就像这些数据来自于某个单一的表一样。
The following example creates a view called SampleView based on the table SampleTable in SampleDB.U-SQL 复制 CREATE VIEW SampleDB.dbo.SampleView AS SELECT id, name, date FROM SampleDB.dbo.SampleTable; View based on an extraction Subsequent queries against SearchLog.tsv can now be performed...
Microsoft Access 数据库引擎不支持将 CREATE VIEW 或任何 DDL 语句与非 Microsoft Access 数据库引擎数据库结合使用。 语法 CREATE VIEW视图[ (field1[,field2[, ...]]) ] ASselectstatement CREATE VIEW 语句包含以下部分: Part 说明 view 要创建的视图的名称。
How to create a view in SQL with multiple-tables In the previous example, we created a view for a single table but we can also create a view for joined multiple tables. In the following example, we will achieve this idea: 1 2
这个视图使用下面的 SQL 创建:CREATE VIEW [Current Product List] AS SELECT ProductID,ProductName FROM Products WHERE Discontinued=No我们可以像这样查询上面这个视图:SELECT * FROM [Current Product List]Northwind 样本数据库的另一个视图会选取 "Products" 表中所有单位价格高于平均单位价格的产品:...