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create sequence myse
increment by 1       --Ôö³¤¶È
start with
1         --´ÓÄÄÀïÔö¼Ó£¬¾ÍÊÇ˵ÏÂÒ»¸ö»ñÈ¡µÄÖµ´ÓÕâ¸öÖµ¿ªÊ¼
nomaxvalue           --²»ÉèÖÃ×î´óÖµ  
¶ÔÓ¦µÄ£ºmaxvalue  30¡¢
order                --Ö¸¶¨Ò»¶¨ÍùÏÂÔö¼Ó
nocycle             
--²»Ñ­»·£¬CYCLEºÍNOCYCLE ±íʾµ±ÐòÁÐÉú³ÉÆ÷µÄÖµ´ïµ½ÏÞÖÆÖµºóÊÇ·ñÑ­»·
cache  10          
--CACHE(»º³å)¶¨Òå´æ·ÅÐòÁеÄÄÚ´æ¿éµÄ´óС£¬Ä¬ÈÏΪ20¡£NOCACHE±íʾ²»¶ÔÐòÁнøÐÐÄڴ滺³å¡£¶ÔÐòÁнøÐÐÄڴ滺³å£¬¿ÉÒÔ¸ÄÉÆÐòÁеÄÐÔÄÜ
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ALTER SEQUENCE emp_sequence
INCREMENT BY 10
MAXVALUE 10000
CYCLE -- µ½10000ºó´ÓÍ·¿ªÊ¼
NOCACHE ;
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O:select ceil(-1.001)  value from dual
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import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
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