½â³ýoracleÊý¾Ý¿âÖÐËùÓÐÍâ¼üÔ¼ÊøSQLÓï¾ä
begin
for item in (select * from user_constraints a where a.constraint_type = 'R') loop
execute immediate 'alter table ' || item.table_name || ' disable constraint ' || item.constraint_name;
end loop;
end;
/
Ïà¹ØÎĵµ£º
# MySQL-Front 5.1 (Build 4.2)
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE */;
/*!40101 SET SQL_MODE='STRICT_TRANS_TABLES,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES */;
/*!40103 SET SQL_NOTES='ON' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS */ ......
Truncate Logs for SQL Server 2008
I had previously posted how to Truncate Logs for SQL Server 2005. Unfortunately, this method does not work in SQL Server 2008. The reason is because the “WITH TRUNCATE_ONLY” command is no longer in SQL 2008. Assuming you run in full recovery mode, the n ......
PL/SQL-FOR UPDATE Óë FOR UPDATE OFµÄÇø±ð
url:http://hi.baidu.com/1413/blog/item/a521251f7e5993c4a686696b.html
Êý¾Ý¿â oracle for update of ºÍ for updateÇø±ð
select * from TTable1 for update Ëø¶¨±íµÄËùÓÐÐУ¬Ö»ÄܶÁ²»ÄÜд
2 select * from TTable1 wher ......
ÎÒÃÇͨ³£ÔÚ¶¨Î»Êý¾Ý¿âËøÎÊÌâʱ£¬Í¨³£Ï£ÍûÕÒµ½Äĸö½ø³Ì·¢³öÁËÄĸöÓï¾ä£¬Ëø×¡ÁËÄÄÕÅ±í£¬Ò»°ãÎÒÃÇͨ¹ý²év$lock£¬È»ºóÕÒµ½sid,ÔÙµ½v$sesionÀïÕÒµ½Õâ¸ö½ø³ÌµÄhash_value»òpre_hash_value,È»ºó¸ù¾Ýhash_value¶¨Î»µ½¾ßÌåµÄÓï¾ä¡£
¿ÉÊÇ£¬ÎÒÃÇ·¢ÏÖ£¬Í¨¹ýJDBCÁ¬½ÓÉÏÀ´µÄ½ø³Ì£¬ËüµÄhash_valueÊÇ0,ËùÒÔÎÒÃǾÍÎÞ·¨¶¨Î»Õâ¸ö½ø³ÌÖ´ÐеÄÓï¾ ......
½ñÌì²âÊÔwebÏîĿн¨ÁËÒ»¸öÊý¾Ý¿â£¬½á¹û±¨´í,ÒÔǰµÇ¼ֱ½ÓÑ¡Ôñ'WindowsÉí·ÝÑéÖ¤',²¢Ã»ÓÐʲôÎÊÌâ³öÏÖ!¿Éǰ¶Îʱ¼ä²ÉÓÃ'SQLSERVERÉí·ÝÑéÖ¤'È¥µÇ¼,ËæÖ®µÄÎÊÌâ¾ÍÀ´ÁË.ÎÞÂÛÓÃʲô·½·¨¾ÍÊÇÒ»¸ö½á¹û³ö´í! ³ö´íµÄÔÒòÊÇ:'Óû§ 'sa' µÇ¼ʧ°Ü¡£¸ÃÓû§Óë¿ÉÐÅ SQL Server Á¬½ÓÎÞ¹ØÁª'.½ñÌìÉÏÍøÉϲéÁ˰ëÌ컹ÊǸ㲻¶¨,×îºó¾¹ýÍøÉϺÍÊéÉ ......