然而,在某些情况下,我们需要首先确认视图是否已存在,如果不存在,则创建一个新视图。在SQL Server中,我们通常使用IF NOT EXISTS语句来实现这一目标。 SQL Server中创建视图的基本语法 创建视图的基本语法如下: CREATEVIEW[schema_name].[view_name]ASSELECTcolumn1,column2,...FROMtable_nameWHEREcondition; 1. 2....
Incorrect syntax near the keyword 'view'. 出现这个错误的原因是:create view 这一句必须是批处理中的第一句。 所以可以将该语句修改为: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 IF EXISTS(SELECT1FROMsys.viewsWHEREname='Report_IndividualTicket') DROPVIEWReport_IndividualTicket GO createviewReport_Indi...
CREATE[EXTERNAL]TABLE[IFNOTEXISTS]table_name[(col_name data_type[COMMENTcol_comment],...)][COMMENTtable_comment][PARTITIONEDBY(col_name data_type[COMMENTcol_comment],...)][CLUSTEREDBY(col_name,col_name,...)[SORTEDBY(col_name[ASC|DESC],...)]INTOnum_bucketsBUCKETS][ROWFORMATrow_format]...
Create View IF NOT EXISTS view_name as Select statement 创建视图view、查询视图view 代码语言:javascript 代码运行次数:0 运行 AI代码解释 CREATE VIEW IF NOT EXISTS employee_view AS select name, age from employee; 修改视图 代码语言:javascript 代码运行次数:0 运行 AI代码解释 ALTER VIEW database_name...
The CREATE VIEW statement creates the view with the specified identifier based on the provided query expression. The view’s schema is inferred from the query’s result type. Syntax Create_View_Statement := 'CREATE' 'VIEW' ['IF' 'NOT' 'EXISTS'] Identifier 'AS' Query_Expression. Remarks ...
CREATE TABLE IF NOT EXISTS actor ( actor_id smallint(5) NOT NULL PRIMARY KEY, first_name varchar(45) NOT NULL, last_name varchar(45) NOT NULL, last_update datetime NOT NULL); -- 创建视图actor_name_view CREATE VIEW actor_name_view AS ...
-- ===view table,执行的建视图SQL如下=== create table if not exists t_crv ( cr_returned_date_sk bigint, cr_returned_time_sk bigint, cr_item_sk bigint not null, cr_refunded_customer_sk bigint, cr_refunded_cdemo_sk bigint, cr_refunded_hdemo_sk...
CREATE MATERIALIZED VIEW [ IF NOT EXISTS ] table_name [ (column_name [, ...] ) ] [ WITH ( storage_parameter [= value] [, ... ] ) ] [ TABLESPACE tablespace_name ] AS query [ WITH [ NO ] DATA ] IF NOT EXISTS 如果已经存在一个同名的物化视图时不要抛出错误。这种情况下会发出一个...
CREATE TABLE srcp (key STRING, value BIGINT, p STRING); -- view with parameters -- param @a -a table parameter -- param @b -a string parameter -- returns a table with schema (key string, value string) CREATE VIEW IF NOT EXISTS pv1(@a TABLE (k STRING, v BIGINT), @b STRING...
createBoolean(existenceCheck, SqlParserPos.ZERO)); operands.add(query); return operands; } @Override public void unparse(SqlWriter writer, int leftPrec, int rightPrec) { writer.keyword("CREATE MATERIALIZED VIEW"); if (existenceCheck) { writer.keyword("IF NOT EXISTS"); } viewName.unparse(...