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深入SQL之 insert all
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用于网站数据迁移时，表之间的数据复制
INSERT ALL WHEN ottl 100000 and ottl 290000 THEN INTO special_orders SELECT o.order_id oid, o.customer_id cid, o.order_total ottl, o.sales_rep_id sid, c.credit_limit cl, c.cust_email cem FROM orders o, customers c WHERE o.customer_id = c.customer_id;
INSERT ALL WHEN ottl 100000 and ottl 290000 THEN INTO special_orders SELECT o.order_id oid, o.customer_id cid, o.order_total ottl, o.sales_rep_id sid, c.credit_limit cl, c.cust_email cem FROM orders o, customers c WHERE o.customer_id = c.customer_id;
Finally, the next example uses the FIRST clause to put orders greater than 2,900,000 into the special_orders table and exclude those orders from the large_orders table:
INSERT FIRST WHEN ottl 100000 and ottl 200000 THEN INTO large_orders VALUES(oid, ottl, sid, cid) SELECT o.order_id oid, o.customer_id cid, o.order_total ottl, o.sales_rep_id sid, c.credit_limit cl, c.cust_email cem FROM orders o, customers c WHERE o.customer_id = c.customer_id;上面的是两个表中都插入了数据,
下面的是first插 special_orders,large_orders不再插入重复数据:p
aaa 评论于：2007.04.11 10:57
引文来源 王旺的书房 | 深入SQL之 insert all
Link URL: http://wworacle.blog.163.com/blog/static/21268725200849113958508
来自 “ ITPUB博客 ” ，链接：https://blog.itpub.net/271063/viewspace-263478/ ，如需转载，请注明出处，否则将追究法律责任。
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