摘要:
表A表 B (AID是外键 指向A表的ID主键)查子表外键与主表主键不重合部分 (包含子表外键为NULL值的情况)select * from B where not exists ( select ID from A where a.id = b.aid );查看子表主键主表主键不重合的部分 (不包含子表外键为NULL值的情况)select * from B where b.aid not in ( select ID from A );普通查询不包含NULLselect * from B where aid !=1;包含NULL的查询 (需要特殊指定)select * from B wher 阅读全文
摘要:
create or replace package PAGEQUERY_PACK is -- Author : ADMINISTRATOR -- Created : 2013/1/13 15:47:30 -- Purpose : FEN YE CHA XUN -- Public type declarations TYPE CUR IS REF CURSOR; -- Public function and procedure declarations PROCEDURE PAGINATING_all_objects_P( P_CURSOR OUT CUR... 阅读全文
摘要:
要用dbms_output.put_line来输出语句,遇到以下错误:ERROR 位于第 1 行:ORA-20000: ORU-10027: buffer overflow, limit of 10000 bytesORA-06512: 在"SYS.DBMS_OUTPUT", line 32ORA-06512: 在"SYS.DBMS_OUTPUT", line 97ORA-06512: 在"SYS.DBMS_OUTPUT", line 112ORA-06512: at line 12View program sources of er 阅读全文