MSSQL过滤及其他问题
INSERT INTO table2
(film_id, brief)
SELECT film_id, brief AS Expr1
FROM table1
WHERE (name = '越狱II18 ')
+============================+
上面语句解决了越狱II18的film_id和brief从table1导入到table2
1.如果我要防止下次重复提交越狱II18这组信息，如何实现语句过滤
2.还有table2本身还有个字段是type（table1没有此字段），想通过这个语句直接传入type值为abcd
谢谢！
[解决办法]
INSERT INTO table2
(type,film_id, brief)
SELECT 'abcd ',film_id, brief AS Expr1
FROM table1
WHERE (name = '越狱II18 ') and film_id not in (select distinct film_id from table2)
