摘要:
select count(1) from syscolumns where id = object_id('TableName')select * from syscolumns where id = object_id('TableName')SELECT MAX(colid) FROM sysc 阅读全文
摘要:
Update语句优化:(需要进行大批量的Update操作时可能会导致等待操作超时)*注意最后需分号 MERGE INTO table_name alias1 //执行update的表名 USING (table|view|sub_query) alias2 //插入的数据 ON (join cond 阅读全文
摘要:
1.建表与数据插入 复制一张表的数据插入另一张表中:insert into Table2 (column_name(s)) selct column_name(s) from Table1 不存在新表创建新表,只复制表结构:select [col1,col2,col3...] into new_ta 阅读全文