Sometimes we encountered a complex problem, and have no idea to know what's wrong.
Try divide and conquer, maybe you'll see things more clear and finish the job more quickly. 
2009年11月2日 星期一
2009年11月1日 星期日
row count of DML
I always forgot how to know how many rows effected by pl/sql DML statement.
SQL%ROWCOUNT
Just want to memorize it 
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