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Creating User-Defined Operators: Example
This example creates a very simple functional implementation of equality and then creates an operator that uses the function:
CREATE FUNCTION eq_f(a VARCHAR2, b VARCHA ......

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¡¡¡¡Ò»ÊÇBLOBÊý¾ÝÀàÐÍ¡£ËüÊÇÓÃÀ´´æ´¢¿É±ä³¤¶ÈµÄ¶þ½øÖÆÊý¾Ý¡£ÓÉÓÚÆä´æ´¢µÄÊÇͨÓõĶþ½øÖÆÊý¾Ý£¬Îª´ËÔÚÊý¾Ý¿âÖ®¼ä»òÕßÔÚ¿Í»§¶ËÓë·þÎñÆ÷Ö®¼ä½øÐд«ÊäµÄʱºò£¬ ......

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exp system/jade@JADE_166.111.134.26 file=d:\jade.dmp statistics=none
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notes oracle undeploy

crsctl stop crs
killall init.crsd
cd /etc/init.d
rm -rf init.crs init.crsd init.cssd init.evmd
rm -rf /tmp/.oracle/
rm -rf /var/tmp/
rm -rf /var/tmp/.oracle/
cd /etc
rm -rf oraInst.loc oracle/ oratab
rm -rf $ORACLE_BASE
dd if=/dev/zero of=/dev/raw/raw_voting_disks bs=1024k
dd if=/dev/zero ......
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