利用使用 CREATE LOCAL TEMPORARY TABLE 的 IF 语句创建的局部临时表,在 IF 语句完成后也会继续保留。 SAP IQ 不支持将 CREATE TABLE ENCRYPTED 子句用于对 SAP IQ 表进行表级加密。然而,SAP IQ 数据库中的 SAP SQL Anywhere 表支持 CREATE TABLE ENCRYPTED 子句。 副作用 自动提交 标准 (返回顶部) SQL - ...
CREATE TABLE AS SELECT: CREATE [EXTERNAL] TABLE [IF NOT EXISTS]db_name.]table_name[PARTITIONED BY (col_name[, ...])][SORT BY ([column[,column...]])][COMMENT 'table_comment'] + [ROW FORMATrow_format] [WITH SERDEPROPERTIES ('key1'='value1', 'key2'='value2', ...)] +[STO...
MySQL allows you to create a table identical to another by using LIKE. The following MySQL statement will create a table 'author_copy' whose structure is identical to the table 'author'. Sample table: author -- Create a new table named 'author_copy' with the same structure as the 'author...
select * from customers where customer_id = 1;You know all the rows will be in the same few locations. Making your SQL that tiny bit faster.Whereas with a heap table, the database could store them anywhere.You can extend this principle to any table with a composite PK. And you (alm...
All Transact-SQL data types can be used as parameters. You can use the user-defined table type to create table-valued parameters. Table-valued parameters can only be INPUT parameters and must be accompanied by the READONLY keyword. For more information, see Use Table-Valued Parameters (Data...
For example, to retrieve all values in the deleted table, use: Copy SELECT * FROM deleted For more information, see Using the inserted and deleted Tables. DDL and logon triggers capture information about the triggering event by using the EVENTDATA (Transact-SQL) function. For more ...
All Transact-SQL data types can be used as parameters. You can use the user-defined table type to create table-valued parameters. Table-valued parameters can only be INPUT parameters and must be accompanied by the READONLY keyword. For more information, seeTable-Valued Parameters (Database Engi...
syntaxsqlCopy CREATE[ORALTER]VIEW[schema_name. ]view_name[ (column_name[ ,...n ] ) ] [WITH<view_attribute>[ ,...n ] ]AS<select_statement>[;]<view_attribute>::={ [SCHEMABINDING] }<select_statement>::=[WITH<common_table_expression>[ ,...n ] ]SELECT<select_criteria> ...
SELECT sql FROM sqlite_master WHERE tbl_name = 'table_name'; DROP TABLE The DROP TABLE command removes a table from a database. Syntax: DROP TABLE table_name [, ...] or DROP TABLE [database_name.]table_name [, ...] Paremeters: ...
To provide a backward compatible interface to emulate a table whose schema has changed. Transact-SQL Syntax Conventions Syntax Copy CREATE VIEW [ schema_name . ] view_name [ (column [ ,...n ] ) ] [ WITH <view_attribute> [ ,...n ] ] AS select_statement [ WITH CHECK OPTION ] [...