1. 用游标传递数据利用游标 REF CURSOR 可将数据集(多行记录)传递到PL/SQL函数: SELECT * FROM TABLE (myfunction (CURSOR (SELECT * FROM mytab))); 2. 利用两个实体化视图(或表)作为样板数据CREATE MATERIALIZED VIEW sum_sales_country_mv BUILD IMMEDIATE REFRESH COMPLETE ENABLE QUERY REWRITE AS SELECT...
oracle内存表在查询和报表的时候用的比较多,它的速度相对物理表要快几十倍。 simple example:1、table()结合数组:*/create or replace type t_testasobject( id integer, rq date, mc varchar2(60) ); create or replace type t_test_tableastable of t_test; create or replace function f_test_array(ni...
select * fromtable(cast(f_int_date_varchar2() as table_int_date_varchar2)); drop function f_int_date_varchar2; drop type table_int_date_varchar2; drop type type_int_date_varchar2; 2.A Function that returns a table of dates in a Range create or replace type date_obj as object (d...
get a function by name java.lang.ObjectremoveByID(java.lang.String id) Remove a function by id. java.lang.ObjectremoveByName(java.lang.String name) Remove a function by name. Methods inherited from class oracle.rules.sdk.editor.datamodel.ModelComponentTable ...
Oracle Table Function Oracle Table Function在Oracle9i时引入。完美的兼容了view和存储过程的长处: 应用举例: 1.Table()函数: set feedback off create or replace type type_int_date_varchar2 as object (i integer, d date, v varchar2(99)) /
which can be used only in a single database(as explained in OracleDatabase Object-Relational Developer's Guide). Although the return type ofa pipelined table function might appear to be a PL/SQL type, the databaseactually converts that PL/SQL type to a corresponding SQL use...
inStreamingMode() .build(); StreamTableEnvironment tEnv = StreamTableEnvironment.create(env, bsSettings); tEnv.registerFunction("split", new Split(" ")); tEnv.registerFunction("duplicator", new DuplicatorFunction()); tEnv.registerFunction("flatten", new FlattenFunction()); 构造数据源 代码...
Oracle 通过table, pipelined函数,用于格式化返回类型为table的函数的结果。 Table function concepts There a couple of steps to take when you are working with table functions. Like when you are working with normal tables you have to describe the way the records of the collection are set up. ...
The interface approach requires the user to supply a type that implements a predefined Oracle interface consisting of start, fetch, and close operations. The type is associated with the table function when the table function is created. During query execution, the fetch method is invoked repeatedly...
Hash – uses an internal function to choose which partition to place rows inWhen you add rows to the table, they will go in the relevant partition.For example, you may want to split up your toys by colour. To do so, list partition it by this column. And define which values will...