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...
CREATE VIEW Syntax CREATEVIEWview_nameAS SELECTcolumn1,column2, ... FROMtable_name WHEREcondition; Note:A view always shows up-to-date data! The database engine recreates the view, every time a user queries it. SQL CREATE VIEW Examples ...
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: ...
Transact-SQL Syntax Conventions CREATE VIEW [ schema_name . ] view_name [ (column [ ,...n ] ) ] [ WITH <view_attribute> [ ,...n ] ] AS select_statement [ WITH CHECK OPTION ] [ ; ] <view_attribute> ::= { [ ENCRYPTION ] ...
SQL Server 和 Azure SQL Database 中預存程序的 Transact-SQL 語法: syntaxsql 複製 CREATE [ OR ALTER ] { PROC | PROCEDURE } [schema_name.] procedure_name [ ; number ] [ { @parameter_name [ type_schema_name. ] data_type } [ VARYING ] [ NULL ] [ = default ] [ OUT | OUTPUT ...
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: ...
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 ...
Transact-SQL Syntax Conventions Syntax CREATE VIEW [ schema_name . ] view_name [ (column [ ,...n ] ) ] [ WITH <view_attribute> [ ,...n ] ] AS select_statement [ WITH CHECK OPTION ] [ ; ] <view_attribute> ::= { [ ENCRYPTION ] [ SCHEMABINDING ] [ VIEW_METADATA ] } ...