FUNCTION f1(x NUMBER) RETURN numset_t PIPELINED; END pkg1; CREATE OR REPLACE PACKAGE BODY pkg1 AS FUNCTION f1(x NUMBER) RETURN numset_t PIPELINED IS BEGIN FOR i IN 1..x LOOP PIPE ROW(i); END LOOP; RETURN; END; END pkg1; SELECT * FROM TABLE(pkg1.f1(5)); COLUMN_VALUE --- ...
1>创建一个表类型 createorreplacetype t_tableistableofnumber; 2>创建函数返回上面定义的类型 createorreplacefunctionf_pipe(snumber)returnt_table pipelinedasv_numbernumber;beginforiin1..s loop v_number :=i;piperow(v_number);endloop;return;endf_pipe; ; 3>测试 select*fromtable(f_pipe(5)) 回到...
SQL Table Macros (Aug 2021): a possible alternative to using CTEs (or pipelined functions) Distributed Query (Aug 2021): A real tangle when using the rule, driving_site and materialize (key point in the footnote) hints (badly) together CTE’s behaving badly with ADG (Jan 2020): an I/...
tab in out dbms_tf.table_t, except_type varchar2 ) return dbms_tf.describe_t; function except_cols ( tab table, except_cols columns ) return table pipelined row polymorphic using except_cols_pkg; function except_cols ( tab table, except_type varchar2 ) return table pipelined row polymorphi...
oracle分割字符串，返回结果集--分割字符串，返回结果集 function split(v_str in varchar2,v_separator in varchar2:=',') return tab_str1 pipelined is v_idx pls_integer;v_list varchar2(8000):= v_str;begin loop v_idx := instr(v_list,v_separator);if v_idx > 0 then pipe row(obj_str...
在select语句中添加startwith子句和connectby子句1.selectlevel,column_name,expression,…2.fromtable_name3.startwithstart_condition4.connectbypriorprior_condition;Level伪列、构造层次感DECODE(value,search1,result1,search2,result2,search3,result3,default) 使用DECODE函数 内容回顼（3）使用...
Dynamic SQL for the whole underlying table/view generated and called in a pipelined table function that utilizes object types. For this blog post I’ll use solution 2, for which I’ll demonstrate the following: Create a standalone function with “LONG-to-CLOB” functionality. Create an object...
TEST-orcl@DESKTOP-V430TU3>CREATE OR REPLACE TYPE type_t_piperow AS TABLE OF rec_t_piperow; 2 / Type created. 函数实现 TEST-orcl@DESKTOP-V430TU3>CREATE OR REPLACE FUNCTION func_piperow_demo1 RETURN type_t_piperow PIPELINED IS
管道函数为并行执行,在普通的函数中使用dbms_output输出的信息,需要在服务器执行完整个函数后一次性的返回给客户端。如果需要在客户端实时的输出函数执行过程中的一些信息,在oracle9i以后可以使用管道函数。 关键字PIPELINED表明这是一个oracle管道函数,oracle管道函数的返回值类型必须为集合,在函数中,PIPE ROW语句被用来返...
PIPELINED as begin for i in 1 .. nvl(n,999999999) loop pipe row(i); end loop; return; end; / Function created. Suppose we needed three rows for something. We can now do that in one of two ways: select * fromTABLE(gen_numbers(3)); ...