[英]how to select dynamically in select * from <table_name> partiton (Partition name)?
i have a big table with several partition. 我有几个分区的大桌子。 my partition name is like below:
我的分区名称如下所示:
P_13931203
P_13931204
P_13931205
P_13931206
i have a select for create partition name dynamically as below: 我可以选择动态创建分区名称,如下所示:
select 'P_' || to_char(sysdate-1,'yyyymmdd','nls_calendar=persian') from dual;
example Output: P_13931204
when i select as below everything is OK: 当我选择如下时,一切都很好:
select *
from <table_name> partition (P_13931205);
but when i select as below i get error: 但是当我如下选择时,我得到错误:
select *
from <table_name> partition (select 'P_' || to_char(sysdate-1,'yyyymmdd','nls_calendar=persian') from dual);
error: 错误:
ORA-00933: SQL command not properly ended 00933. 00000 - "SQL command not properly ended" *Cause:
ORA-00933:SQL命令未正确终止00933。00000-“ SQL命令未正确终止” *原因:
*Action: Error at Line: 2 Column: 28 syntax error, expected : identifier*操作:第2行错误:第28列语法错误,预期为:标识符
Try this:- 尝试这个:-
select * from partition
(select 'P_' || to_char( sysdate-1,'yyyymmdd','nls_calendar=persian') from dual
) Dummy_table;
Beacuse after every sub-query select you have to mention a dataset name. 因为在选择每个子查询之后,您都必须提及数据集名称。
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