4 PARALLEL_ENABLE AGGREGATE USING string_agg_type; 5 / Function created. 另外还有一种方法就是用oracle 10g增加的sys_connect_by_path来做,但是性能不好。 首先来准备测试数据,创建一个数据量是3倍的DBA_OBJECTS的表T。 SQL> drop table t; Table dropped. SQL> create table t 2 as select MOD(rownum...
LISTAGG operates on all rows and returns a single output row. ■ As a group-set aggregate, the function operates on and returns an output row for each group defined by the GROUP
该方法是在方法2的基础上,使用动态SQL,将表名和字段名称传入,从而达到灵活的目的。 1createorreplacefunctionstr_list2( key_nameinvarchar2,2keyinvarchar2,3conameinvarchar2,4tnameinvarchar2)5returnvarchar26as7type rcisrefcursor;8strvarchar2(4000);9sepvarchar2(2);10valvarchar2(4000);11cur rc;12begi...
PARALLEL_ENABLE AGGREGATE USING strcat_type; TYPE: create or replace type strcat_type as object ( cat_string varchar2(4000), static function ODCIAggregateInitialize(cs_ctx In Out strcat_type) return number, member function ODCIAggregateIterate(self In Out strcat_type,value in varchar2) return nu...
LEFT JOIN pg_catalog.pg_aggregate a ON a.aggfnoid = p.oid WHERE a.aggfnoid IS NOT NULL AND p.proname like 'string_agg%'; function_name | result_type | argument_types | function_type | aggtransfn | aggfinalfn ---+---+---+---+---+--- string_agg | text | text, text ...
SQL> show parameter control NAME TYPE VALUE --- --- --- control_file_record_keep_time integer 7 control_files string /opt/oracle/oradata/cq/control 01.ctl, /opt/oracle/oradata/cq /control02.ctl, /opt/oracle/or adata/cq/control03.ctl --查看redo log大小和位置 set linesize 999 col...
启动第二个节点: [LHRAXXTDB4:root]:/>ORACLE_SID=DGPRI2 [LHRAXXTDB4:root]:/>su - oracle [LHRAXXTDB4:oracle]:/oracle>ORACLE_SID=DGPRI2 [LHRAXXTDB4:oracle]:/oracle>sqlplus / as sysdba SQL*Plus: Release 11.2.0.4.0 Production on Wed Feb 17 12:26:42 2016 Copyright (c) 1982, ...
hash_value,bind_data from gv$sql where sql_id='uuvvwwxxyyzz'; col value1 for a5 col value2 for a80 select hash_value,DBMS_SQLTUNE.EXTRACT_BIND(BIND_DATA,1).VALUE_STRING VALUE1 ,DBMS_SQLTUNE.EXTRACT_BIND(BIND_DATA,2).VALUE_STRING VALUE2 from gv$sql where sql_id='uuvvwwxxyyzz...
On the Select File Location screen, specify the complete path and file name of the aggregate creation script. You can specify a new or an existing file name. Typically, when you run the SQL script against the Oracle BI Server, it creates DDL and runs it against the target database schema...
| aggregate | wm_concat(text) | 1.0 | internal | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: | function | nvl2(anyelement,anyelement,anyelement) | 1.0 | sql | Skip due to version | gsql:Oracle_Functions.sql:1035: NOTICE: | function | trunc(timestamp,text) | 1....