create view语句是将某个查询数据的定义保留下来,以便随时调用,这就是所谓的视图。视图本身不存储查询结果,只是一个定义。 Syntax:CREATE[ORREPLACE] [ALGORITHM={UNDEFINED|MERGE|TEMPTABLE}] [DEFINER={user|CURRENT_USER}] [SQLSECURITY { DEFINER|INVOKER }]VIEWview_name [(column_list)]ASselect_statement [WI...
Transact-SQL 语法约定 语法 SQL Server 和 Azure SQL 数据库 的语法。 syntaxsql CREATE[ORALTER]VIEW[schema_name. ]view_name[ (column [ ,...n ] ) ] [WITH<view_attribute>[ ,...n ] ]ASselect_statement[WITHCHECKOPTION] [ ; ]<view_attribute>::={ [ENCRYPTION] [SCHEMABINDING] [VIEW_META...
SQL Server 和 Azure SQL Database 的語法。 syntaxsql 複製 CREATE [ OR ALTER ] VIEW [ schema_name . ] view_name [ (column [ ,...n ] ) ] [ WITH <view_attribute> [ ,...n ] ] AS select_statement [ WITH CHECK OPTION ] [ ; ] <view_attribute> ::= { [ ENCRYPTION ] [ SCHE...
Oracle CREATE VIEW syntax To create a new view in a database, you use the following Oracle CREATE VIEW statement: CREATE [OR REPLACE] VIEW view_name [(column_aliases)] AS defining-query [WITH READ ONLY] [WITH CHECK OPTION] Code language: SQL (Structured Query Language) (sql) ...
SQL 更新视图 您可以使用下面的语法来更新视图: SQL CREATE OR REPLACE VIEW Syntax CREATE OR REPLACE VIEW view_name AS SELECT column_name(s) FROM table_name WHERE condition 现在,我们希望向 "Current Product List" 视图添加 "Category" 列。我们将通过下列 SQL 更新视图: ...
Syntax Arguments schema_name Is the name of the schema to which the view belongs. view_name Is the name of the view. View names must follow the rules for identifiers. Specifying the view owner name is optional. column Is the name to be used for a column in a view. A column name is...
Syntax 引數 備註 擁有權 顯示其他 4 個 適用於:Azure Synapse Analytics 此文章說明 Azure Synapse Analytics 中用於開發解決方案的 CREATE MATERIALIZED VIEW AS SELECT T-SQL 陳述式。 此文章也提供程式碼範例。 具體化檢視會保存從檢視定義查詢傳回的資料,並在底層資料表中的資料變更時自動取得更新。...
Creates a new view. 注意 The Microsoft Access database engine does not support the use of CREATE VIEW, or any of the DDL statements, with non-Microsoft Access database engine databases. Syntax CREATE VIEW view [(field1[, field2[, …]])] AS selectstatement The...
Read more how tocreate view in SQL. Replace View Statement The REPLACE VIEW is used to change the definition of a view. The CREATE VIEW and REPLACE VIEW keywords are used together. The syntax is following: Create or replace View view_name ...
Below is the Hive ALTER VIEW Syntax: ALTER VIEW [database_name.]view_name AS select_statement; ALTER VIEW [database_name.]view_name RENAME TO [database_name.]view_name; Hive ALTER VIEW Examples Below is the examples that shows how to use theHive ALTER VIEWstatement: ...