Learn about inline views in SQL, also known as subqueries in the FROM clause. Explore syntax and examples to simplify complex SQL queries using inline views.
syntaxsql 複製 C1 ::= < simple_interval > [ OR < simple_interval > OR ...] < simple_interval > :: = < col > { < | > | \<= | >= | = < value >} | < col > BETWEEN < value1 > AND < value2 > | < col > IN ( value_list ) | < col > { > | >= } < valu...
syntaxsql C1::=< simple_interval >[OR< simple_interval >OR...]< simple_interval >:: =< col >{< | >| \<= | >= | =< value >} |< col >BETWEEN< value1 >AND< value2 >|< col >IN(value_list) |< col >{ > | >= }< value1 >AND< col >{< | <= } < value2 > ...
syntaxsql C1::=< simple_interval >[OR< simple_interval >OR...]< simple_interval >:: =< col >{< | >| \<= | >= | =< value >} |< col >BETWEEN< value1 >AND< value2 >|< col >IN(value_list) |< col >{ > | >= }< value1 >AND< col >{< | <= } < value2 > ...
[...] -- Set properties in TBLPROPERTIES > ALTER VIEW tempsc1.v2 SET TBLPROPERTIES ('created.by.user' = "John", 'created.date' = '01-01-2001' ); -- Use `DESCRIBE TABLE EXTENDED tempsc1.v2` to verify > DESCRIBE TABLE EXTENDED tempsc1.v2; c1 int NULL c2 string NUL...
Assume that the query returned MYVIEW as the name of a view with a regeneration error. Issue an ALTER VIEW statement to regenerate the view: ALTER VIEW MYVIEW REGENERATE;Parent topic: SQL statements in Db2 for z/OS
具体化视图不支持标识列或代理项键。 具体化视图不支持OPTIMIZE和VACUUM命令。 维护是自动进行的。 具体化视图不支持定义数据质量约束的预期。 示例 SQL复制 -- Create a materialized view if it doesn't exist>CREATEMATERIALIZEDVIEWIFNOTEXISTSsubscribed_moviesASSELECTmo.member_id, mb.full_name, mo....
Creates a virtual table that represents the data in one or more tables in an alternative way. CREATE VIEW must be the first statement in a query batch.Transact-SQL Syntax ConventionsSyntaxCopy CREATE VIEW [ schema_name . ] view_name [ (column [ ,...n ] ) ] [ WITH <view_attribute>...
Syntax syntaxsql Copy sp_refreshview [ @viewname = ] 'viewname' [ ; ] Arguments [ @viewname = ] 'viewname' The name of the view. @viewname is nvarchar, with no default. @viewname can be a multipart identifier, but can only refer to views in the current database. Return code...
The sql in the annotation supports reading from the configuration The configured json is as follows:{ "mysqlSql": { "QueryListSql":"select * from customer", "QueryByPageSql":"select * from customer order by age", "UpdateByNameSql":"update customer set age=@age where name=@name", "...